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Alerts Issued in March 2012


Space Weather Message Code: WARK04
Serial Number: 1904
Issue Time: 2012 Mar 28 1155 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1903
Valid From: 2012 Mar 27 1615 UTC
Now Valid Until: 2012 Mar 28 1800 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK04
Serial Number: 1903
Issue Time: 2012 Mar 28 0552 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1902
Valid From: 2012 Mar 27 1615 UTC
Now Valid Until: 2012 Mar 28 1200 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK05
Serial Number: 762
Issue Time: 2012 Mar 28 0252 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 761
Valid From: 2012 Mar 27 2330 UTC
Now Valid Until: 2012 Mar 28 0600 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: WARK05
Serial Number: 761
Issue Time: 2012 Mar 27 2315 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2012 Mar 27 2330 UTC
Valid To: 2012 Mar 28 0300 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: ALTK04
Serial Number: 1570
Issue Time: 2012 Mar 27 2232 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2012 Mar 27 2235 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK04
Serial Number: 1902
Issue Time: 2012 Mar 27 2051 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1901
Valid From: 2012 Mar 27 1615 UTC
Now Valid Until: 2012 Mar 28 0600 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK04
Serial Number: 1901
Issue Time: 2012 Mar 27 1610 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Mar 27 1615 UTC
Valid To: 2012 Mar 27 2100 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: ALTTP4
Serial Number: 364
Issue Time: 2012 Mar 27 0040 UTC

ALERT: Type IV Radio Emission
Begin Time: 2012 Mar 26 2304 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.


Space Weather Message Code: ALTTP2
Serial Number: 785
Issue Time: 2012 Mar 27 0039 UTC

ALERT: Type II Radio Emission
Begin Time: 2012 Mar 26 2249 UTC
Estimated Velocity: 407 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: ALTTP2
Serial Number: 784
Issue Time: 2012 Mar 24 1102 UTC

ALERT: Type II Radio Emission
Begin Time: 2012 Mar 24 0845 UTC
Estimated Velocity: 587 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: ALTK04
Serial Number: 1569
Issue Time: 2012 Mar 24 0722 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2012 Mar 24 0718 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK04
Serial Number: 1900
Issue Time: 2012 Mar 24 0551 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Mar 24 0550 UTC
Valid To: 2012 Mar 24 1300 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: ALTEF3
Serial Number: 1882
Issue Time: 2012 Mar 22 0507 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1881
Begin Time: 2012 Mar 10 0410 UTC
Yesterday Maximum 2MeV Flux: 28402 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 1881
Issue Time: 2012 Mar 21 0506 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1880
Begin Time: 2012 Mar 10 0410 UTC
Yesterday Maximum 2MeV Flux: 22236 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 1880
Issue Time: 2012 Mar 20 0509 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1879
Begin Time: 2012 Mar 10 0410 UTC
Yesterday Maximum 2MeV Flux: 12833 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 1879
Issue Time: 2012 Mar 19 0550 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1878
Begin Time: 2012 Mar 10 0410 UTC
Yesterday Maximum 2MeV Flux: 14425 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTK04
Serial Number: 1568
Issue Time: 2012 Mar 19 0453 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2012 Mar 19 0453 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK04
Serial Number: 1899
Issue Time: 2012 Mar 19 0438 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Mar 19 0438 UTC
Valid To: 2012 Mar 19 1300 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WATA20
Serial Number: 489
Issue Time: 2012 Mar 18 2102 UTC

CANCEL WATCH: Geomagnetic A-index of 20 or greater predicted for UTC Day 2012 Mar 18
Cancel Serial Number: 488
Original Issue Time: 2012 Mar 16 2134 UTC

Comment: Conditions for this watch are no longer expected.
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: ALTEF3
Serial Number: 1878
Issue Time: 2012 Mar 18 0507 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1877
Begin Time: 2012 Mar 10 0410 UTC
Yesterday Maximum 2MeV Flux: 11468 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: WARK04
Serial Number: 1898
Issue Time: 2012 Mar 17 2323 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1897
Valid From: 2012 Mar 15 1300 UTC
Now Valid Until: 2012 Mar 19 0100 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: ALTTP2
Serial Number: 783
Issue Time: 2012 Mar 17 2106 UTC

ALERT: Type II Radio Emission
Begin Time: 2012 Mar 17 2038 UTC
Estimated Velocity: 1140 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: ALTEF3
Serial Number: 1877
Issue Time: 2012 Mar 17 0531 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1876
Begin Time: 2012 Mar 10 0410 UTC
Yesterday Maximum 2MeV Flux: 11414 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: WARK04
Serial Number: 1897
Issue Time: 2012 Mar 16 2331 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1896
Valid From: 2012 Mar 15 1300 UTC
Now Valid Until: 2012 Mar 18 0100 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WATA20
Serial Number: 488
Issue Time: 2012 Mar 16 2134 UTC

WATCH: Geomagnetic A-index of 20 or greater predicted
NOAA Scale: Periods reaching the G1 (Minor) Level Likely
Valid for UTC Day: 2012 Mar 18
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: WARK04
Serial Number: 1896
Issue Time: 2012 Mar 16 1544 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1895
Valid From: 2012 Mar 15 1300 UTC
Now Valid Until: 2012 Mar 17 0000 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: ALTEF3
Serial Number: 1876
Issue Time: 2012 Mar 16 1011 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1875
Begin Time: 2012 Mar 10 0410 UTC
Yesterday Maximum 2MeV Flux: 8788 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: WARK05
Serial Number: 760
Issue Time: 2012 Mar 16 0226 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 759
Valid From: 2012 Mar 15 1426 UTC
Now Valid Until: 2012 Mar 16 1300 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: WARK04
Serial Number: 1895
Issue Time: 2012 Mar 16 0226 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1894
Valid From: 2012 Mar 15 1300 UTC
Now Valid Until: 2012 Mar 16 1600 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK04
Serial Number: 1894
Issue Time: 2012 Mar 15 2042 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1893
Valid From: 2012 Mar 15 1300 UTC
Now Valid Until: 2012 Mar 16 0600 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK05
Serial Number: 759
Issue Time: 2012 Mar 15 2042 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 758
Valid From: 2012 Mar 15 1426 UTC
Now Valid Until: 2012 Mar 16 0300 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: ALTK06
Serial Number: 283
Issue Time: 2012 Mar 15 1724 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2012 Mar 15 1724 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washinton state.


Space Weather Message Code: WARK06
Serial Number: 192
Issue Time: 2012 Mar 15 1704 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2012 Mar 15 1705 UTC
Valid To: 2012 Mar 15 2100 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washinton state.


Space Weather Message Code: ALTK05
Serial Number: 681
Issue Time: 2012 Mar 15 1505 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2012 Mar 15 1500 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: SUMPX1
Serial Number: 53
Issue Time: 2012 Mar 15 1445 UTC

SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2012 Mar 13 1810 UTC
Maximum Time: 2012 Mar 13 2045 UTC
End Time: 2012 Mar 15 0620 UTC
Maximum 10MeV Flux: 469 pfu
NOAA Scale: S2 - Moderate


Space Weather Message Code: WARK05
Serial Number: 758
Issue Time: 2012 Mar 15 1425 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2012 Mar 15 1426 UTC
Valid To: 2012 Mar 15 2100 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: ALTK04
Serial Number: 1567
Issue Time: 2012 Mar 15 1329 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2012 Mar 15 1329 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: SUMSUD
Serial Number: 149
Issue Time: 2012 Mar 15 1314 UTC

SUMMARY: Geomagnetic Sudden Impulse
Observed: 2012 Mar 15 1309 UTC
Deviation: 27 nT
Station: Boulder


Space Weather Message Code: WARK04
Serial Number: 1893
Issue Time: 2012 Mar 15 1254 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Mar 15 1300 UTC
Valid To: 2012 Mar 15 2100 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARSUD
Serial Number: 109
Issue Time: 2012 Mar 15 1250 UTC

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2012 Mar 15 1300 UTC
Valid To: 2012 Mar 15 1330 UTC
IP Shock Passage Observed: 2012 Mar 15 1240 UTC


Space Weather Message Code: ALTTP2
Serial Number: 782
Issue Time: 2012 Mar 15 0807 UTC

ALERT: Type II Radio Emission
Begin Time: 2012 Mar 15 0748 UTC
Estimated Velocity: 468 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: ALTEF3
Serial Number: 1875
Issue Time: 2012 Mar 15 0508 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1874
Begin Time: 2012 Mar 10 0410 UTC
Yesterday Maximum 2MeV Flux: 16620 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: WARK04
Serial Number: 1892
Issue Time: 2012 Mar 15 0141 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Mar 15 0150 UTC
Valid To: 2012 Mar 15 0600 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARPX1
Serial Number: 353
Issue Time: 2012 Mar 14 2345 UTC

EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 352
Valid From: 2012 Mar 14 0600 UTC
Now Valid Until: 2012 Mar 15 2359 UTC
Warning Condition: Persistence
Predicted NOAA Scale: S2 - Moderate
Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience small, increased radiation exposures.
Spacecraft - Infrequent single-event upsets to satellites are possible.
Radio - Small effects on polar HF (high frequency) propagation resulting in fades at lower frequencies.


Space Weather Message Code: SUMPX2
Serial Number: 30
Issue Time: 2012 Mar 14 1442 UTC

SUMMARY: Proton Event 10MeV Integral Flux exceeded 100pfu
Begin Time: 2012 Mar 13 1810 UTC
Maximum Time: 2012 Mar 13 2045 UTC
End Time: 2012 Mar 14 0955 UTC
Maximum 10MeV Flux: 469 pfu
NOAA Scale: S2 - Moderate


Space Weather Message Code: SUMPC0
Serial Number: 21
Issue Time: 2012 Mar 14 1139 UTC

SUMMARY: Proton Event 100MeV Integral Flux exceeded 1pfu
Begin Time: 2012 Mar 13 1810 UTC
Maximum Time: 2012 Mar 13 1905 UTC
End Time: 2012 Mar 13 2255 UTC
Maximum 100MeV Flux: 1 pfu


Space Weather Message Code: WARPX1
Serial Number: 352
Issue Time: 2012 Mar 14 0613 UTC

WARNING: Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2012 Mar 14 0600 UTC
Valid To: 2012 Mar 14 2359 UTC
Warning Condition: Persistence
Predicted NOAA Scale: S2 - Moderate
Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience small, increased radiation exposures.
Spacecraft - Infrequent single-event upsets to satellites are possible.
Radio - Small effects on polar HF (high frequency) propagation resulting in fades at lower frequencies.


Space Weather Message Code: ALTEF3
Serial Number: 1874
Issue Time: 2012 Mar 14 0501 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1873
Begin Time: 2012 Mar 10 0410 UTC
Yesterday Maximum 2MeV Flux: 2466 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTPX2
Serial Number: 50
Issue Time: 2012 Mar 13 1906 UTC

ALERT: Proton Event 10MeV Integral Flux exceeded 100pfu
Begin Time: 2012 Mar 13 1855 UTC
NOAA Scale: S2 - Moderate
Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience small, increased radiation exposures.
Spacecraft - Infrequent single-event upsets to satellites are possible.
Radio - Small effects on polar HF (high frequency) propagation resulting in fades at lower frequencies.


Space Weather Message Code: SUM10R
Serial Number: 533
Issue Time: 2012 Mar 13 1845 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2012 Mar 13 1711 UTC
Maximum Time: 2012 Mar 13 1725 UTC
End Time: 2012 Mar 13 1805 UTC
Duration: 54 minutes
Peak Flux: 1400 sfu
Latest Penticton Noon Flux: 115 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.


Space Weather Message Code: ALTTP4
Serial Number: 363
Issue Time: 2012 Mar 13 1845 UTC

ALERT: Type IV Radio Emission
Begin Time: 2012 Mar 13 1729 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.


Space Weather Message Code: SUMXM5
Serial Number: 88
Issue Time: 2012 Mar 13 1836 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2012 Mar 13 1712 UTC
Maximum Time: 2012 Mar 13 1741 UTC
End Time: 2012 Mar 13 1825 UTC
X-ray Class: M7.9
Location: N18W56
NOAA Scale: R2 - Moderate
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.


Space Weather Message Code: WARPC0
Serial Number: 61
Issue Time: 2012 Mar 13 1818 UTC

WARNING: Proton 100MeV Integral Flux above 1pfu expected
Valid From: 2012 Mar 13 1817 UTC
Valid To: 2012 Mar 14 0600 UTC
Warning Condition: Onset
Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact.


Space Weather Message Code: ALTPC0
Serial Number: 36
Issue Time: 2012 Mar 13 1818 UTC

ALERT: Proton Event 100MeV Integral Flux exceeded 1pfu
Begin Time: 2012 Mar 13 1817 UTC
Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact.


Space Weather Message Code: ALTTP2
Serial Number: 781
Issue Time: 2012 Mar 13 1746 UTC

ALERT: Type II Radio Emission
Begin Time: 2012 Mar 13 1715 UTC
Estimated Velocity: 1366 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: ALTXMF
Serial Number: 169
Issue Time: 2012 Mar 13 1727 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2012 Mar 13 1726 UTC
NOAA Scale: R2 - Moderate
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/drap/index.html.


Space Weather Message Code: WARPX1
Serial Number: 351
Issue Time: 2012 Mar 13 1726 UTC

EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 350
Valid From: 2012 Mar 13 0800 UTC
Now Valid Until: 2012 Mar 14 0600 UTC
Warning Condition: Persistence
Predicted NOAA Scale: S1 - Minor
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.


Space Weather Message Code: WATA50
Serial Number: 47
Issue Time: 2012 Mar 13 1328 UTC

CANCEL WATCH: Geomagnetic A-index of 50 or greater predicted for UTC Day 2012 Mar 13
Cancel Serial Number: 46
Original Issue Time: 2012 Mar 12 0227 UTC

Comment: Conditions for this Watch are no longer present.
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.


Space Weather Message Code: ALTEF3
Serial Number: 1873
Issue Time: 2012 Mar 13 1302 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1872
Begin Time: 2012 Mar 10 0410 UTC
Yesterday Maximum 2MeV Flux: 1336 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTPX1
Serial Number: 286
Issue Time: 2012 Mar 13 0801 UTC

ALERT: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2012 Mar 13 0745 UTC
NOAA Scale: S1 - Minor
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.


Space Weather Message Code: WARPX1
Serial Number: 350
Issue Time: 2012 Mar 13 0800 UTC

WARNING: Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2012 Mar 13 0800 UTC
Valid To: 2012 Mar 13 1800 UTC
Warning Condition: Onset
Predicted NOAA Scale: S1 - Minor
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.


Space Weather Message Code: WARK04
Serial Number: 1891
Issue Time: 2012 Mar 13 0558 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1890
Valid From: 2012 Mar 12 0900 UTC
Now Valid Until: 2012 Mar 13 1500 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK04
Serial Number: 1890
Issue Time: 2012 Mar 12 2346 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1889
Valid From: 2012 Mar 12 0900 UTC
Now Valid Until: 2012 Mar 13 0600 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: SUMPX1
Serial Number: 52
Issue Time: 2012 Mar 12 2335 UTC

SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2012 Mar 07 0510 UTC
Maximum Time: 2012 Mar 08 1115 UTC
End Time: 2012 Mar 12 2050 UTC
Maximum 10MeV Flux: 6530 pfu
NOAA Scale: S3 - Strong


Space Weather Message Code: ALTK06
Serial Number: 282
Issue Time: 2012 Mar 12 1236 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2012 Mar 12 1235 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washinton state.


Space Weather Message Code: ALTEF3
Serial Number: 1872
Issue Time: 2012 Mar 12 1201 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1871
Begin Time: 2012 Mar 10 0410 UTC
Yesterday Maximum 2MeV Flux: 24337 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTK06
Serial Number: 281
Issue Time: 2012 Mar 12 1154 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2012 Mar 12 1155 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washinton state.


Space Weather Message Code: WARK06
Serial Number: 191
Issue Time: 2012 Mar 12 1020 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2012 Mar 12 1020 UTC
Valid To: 2012 Mar 12 1800 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washinton state.


Space Weather Message Code: ALTK05
Serial Number: 680
Issue Time: 2012 Mar 12 0946 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2012 Mar 12 0945 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: SUMSUD
Serial Number: 148
Issue Time: 2012 Mar 12 0927 UTC

SUMMARY: Geomagnetic Sudden Impulse
Observed: 2012 Mar 12 0921 UTC
Deviation: 96 nT
Station: Boulder


Space Weather Message Code: ALTK04
Serial Number: 1566
Issue Time: 2012 Mar 12 0920 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2012 Mar 12 0920 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK05
Serial Number: 757
Issue Time: 2012 Mar 12 0857 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2012 Mar 12 0900 UTC
Valid To: 2012 Mar 12 2359 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: WARSUD
Serial Number: 108
Issue Time: 2012 Mar 12 0854 UTC

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2012 Mar 12 0915 UTC
Valid To: 2012 Mar 12 1015 UTC
IP Shock Passage Observed: 2012 Mar 12 0842 UTC


Space Weather Message Code: WARK04
Serial Number: 1889
Issue Time: 2012 Mar 12 0850 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Mar 12 0900 UTC
Valid To: 2012 Mar 12 2359 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARPX1
Serial Number: 349
Issue Time: 2012 Mar 12 0603 UTC

EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 348
Valid From: 2012 Mar 07 0030 UTC
Now Valid Until: 2012 Mar 13 0000 UTC
Warning Condition: persistence
Predicted NOAA Scale: S1 - Minor
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.


Space Weather Message Code: WATA50
Serial Number: 46
Issue Time: 2012 Mar 12 0227 UTC

WATCH: Geomagnetic A-index of 50 or greater predicted
NOAA Scale: Periods reaching the G3 (Strong) Level Likely
Valid for UTC Day: 2012 Mar 13
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.


Space Weather Message Code: WATA50
Serial Number: 45
Issue Time: 2012 Mar 11 1951 UTC

CANCEL WATCH: Geomagnetic A-index of 50 or greater predicted for UTC Day 2012 Mar 11
Cancel Serial Number: 44
Original Issue Time: 2012 Mar 09 2209 UTC

Comment: Conditions are not present for strong geomagnetic storming.
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.


Space Weather Message Code: SUMPX2
Serial Number: 29
Issue Time: 2012 Mar 11 0935 UTC

SUMMARY: Proton Event 10MeV Integral Flux exceeded 100pfu
Begin Time: 2012 Mar 07 1015 UTC
Maximum Time: 2012 Mar 08 1115 UTC
End Time: 2012 Mar 11 0650 UTC
Maximum 10MeV Flux: 6530 pfu
NOAA Scale: S3 - Strong


Space Weather Message Code: ALTEF3
Serial Number: 1871
Issue Time: 2012 Mar 11 0632 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1870
Begin Time: 2012 Mar 10 0410 UTC
Yesterday Maximum 2MeV Flux: 9380 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: SUMPC0
Serial Number: 20
Issue Time: 2012 Mar 11 0106 UTC

SUMMARY: Proton Event 100MeV Integral Flux exceeded 1pfu
Begin Time: 2012 Mar 07 0405 UTC
Maximum Time: 2012 Mar 07 1525 UTC
End Time: 2012 Mar 10 1650 UTC
Maximum 100MeV Flux: 69 pfu


Space Weather Message Code: WATA30
Serial Number: 95
Issue Time: 2012 Mar 10 2200 UTC

WATCH: Geomagnetic A-index of 30 or greater predicted
NOAA Scale: Periods reaching the G2 (Moderate) Level Likely
Valid for UTC Day: 2012 Mar 12
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washinton state.


Space Weather Message Code: WARPX1
Serial Number: 348
Issue Time: 2012 Mar 10 2025 UTC

EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 347
Valid From: 2012 Mar 07 0030 UTC
Now Valid Until: 2012 Mar 12 0100 UTC
Warning Condition: persistence
Predicted NOAA Scale: S2 - Moderate
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.


Space Weather Message Code: WARPC0
Serial Number: 60
Issue Time: 2012 Mar 10 2025 UTC

EXTENDED WARNING: Proton 100MeV Integral Flux above 1pfu expected
Extension to Serial Number: 59
Valid From: 2012 Mar 07 0300 UTC
Now Valid Until: 2012 Mar 11 1300 UTC
Warning Condition: Persistence

Comment: Recent M8 x-ray event from proton producing Region 1429 is expected to increase proton flux levels to above alert threshold levels.
Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact.


Space Weather Message Code: SUM10R
Serial Number: 532
Issue Time: 2012 Mar 10 1842 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2012 Mar 10 1722 UTC
Maximum Time: 2012 Mar 10 1802 UTC
End Time: 2012 Mar 10 1822 UTC
Duration: 60 minutes
Peak Flux: 459 sfu
Latest Penticton Noon Flux: 146 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.


Space Weather Message Code: SUMXM5
Serial Number: 87
Issue Time: 2012 Mar 10 1835 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2012 Mar 10 1715 UTC
Maximum Time: 2012 Mar 10 1744 UTC
End Time: 2012 Mar 10 1830 UTC
X-ray Class: M8.4
Location: N18W23
NOAA Scale: R2 - Moderate

Comment: No optical reports from ground stations. Location verified through GOES-15 SXI imagery
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.


Space Weather Message Code: ALTTP4
Serial Number: 362
Issue Time: 2012 Mar 10 1818 UTC

ALERT: Type IV Radio Emission
Begin Time: 2012 Mar 10 1729 UTC

Comment: Associated with M8 event from Rgn 1429 (N18W23)
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.


Space Weather Message Code: ALTXMF
Serial Number: 168
Issue Time: 2012 Mar 10 1726 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2012 Mar 10 1725 UTC
NOAA Scale: R2 - Moderate
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/drap/index.html.


Space Weather Message Code: WARPC0
Serial Number: 59
Issue Time: 2012 Mar 10 1209 UTC

EXTENDED WARNING: Proton 100MeV Integral Flux above 1pfu expected
Extension to Serial Number: 58
Valid From: 2012 Mar 07 0300 UTC
Now Valid Until: 2012 Mar 10 2100 UTC
Warning Condition: Persistence
Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact.


Space Weather Message Code: ALTEF3
Serial Number: 1870
Issue Time: 2012 Mar 10 0525 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1869
Begin Time: 2012 Mar 10 0410 UTC
Yesterday Maximum 2MeV Flux: 1410 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 1869
Issue Time: 2012 Mar 10 0428 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2012 Mar 10 0410 UTC
Station: GOES13
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: WARPX1
Serial Number: 347
Issue Time: 2012 Mar 09 2233 UTC

EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 346
Valid From: 2012 Mar 07 0030 UTC
Now Valid Until: 2012 Mar 11 0000 UTC
Warning Condition: persistence
Predicted NOAA Scale: S1 - Minor
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.


Space Weather Message Code: WARK04
Serial Number: 1888
Issue Time: 2012 Mar 09 2227 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1887
Valid From: 2012 Mar 07 0145 UTC
Now Valid Until: 2012 Mar 10 1200 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WATA50
Serial Number: 44
Issue Time: 2012 Mar 09 2209 UTC

WATCH: Geomagnetic A-index of 50 or greater predicted
NOAA Scale: Periods reaching the G3 (Strong) Level Likely
Valid for UTC Day: 2012 Mar 11
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.


Space Weather Message Code: WARK05
Serial Number: 756
Issue Time: 2012 Mar 09 1740 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 755
Valid From: 2012 Mar 08 1100 UTC
Now Valid Until: 2012 Mar 10 1200 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: WARPC0
Serial Number: 58
Issue Time: 2012 Mar 09 1740 UTC

EXTENDED WARNING: Proton 100MeV Integral Flux above 1pfu expected
Extension to Serial Number: 57
Valid From: 2012 Mar 07 0300 UTC
Now Valid Until: 2012 Mar 10 1200 UTC
Warning Condition: Persistence
Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact.


Space Weather Message Code: WARK06
Serial Number: 190
Issue Time: 2012 Mar 09 1740 UTC

EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 189
Valid From: 2012 Mar 09 0330 UTC
Now Valid Until: 2012 Mar 10 0000 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washinton state.


Space Weather Message Code: ALTK06
Serial Number: 280
Issue Time: 2012 Mar 09 1354 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2012 Mar 09 1352 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washinton state.


Space Weather Message Code: WARK05
Serial Number: 755
Issue Time: 2012 Mar 09 1146 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 754
Valid From: 2012 Mar 08 1100 UTC
Now Valid Until: 2012 Mar 09 1800 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: WARK04
Serial Number: 1887
Issue Time: 2012 Mar 09 1146 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1886
Valid From: 2012 Mar 07 0145 UTC
Now Valid Until: 2012 Mar 10 0000 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK07
Serial Number: 36
Issue Time: 2012 Mar 09 1146 UTC

EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 35
Valid From: 2012 Mar 09 0700 UTC
Now Valid Until: 2012 Mar 09 1500 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.


Space Weather Message Code: WARK06
Serial Number: 189
Issue Time: 2012 Mar 09 1146 UTC

EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 188
Valid From: 2012 Mar 09 0330 UTC
Now Valid Until: 2012 Mar 09 1800 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washinton state.


Space Weather Message Code: ALTK07
Serial Number: 85
Issue Time: 2012 Mar 09 1033 UTC

ALERT: Geomagnetic K-index of 7
Threshold Reached: 2012 Mar 09 1028 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.


Space Weather Message Code: ALTK06
Serial Number: 279
Issue Time: 2012 Mar 09 0945 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2012 Mar 09 0942 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washinton state.


Space Weather Message Code: WARPC0
Serial Number: 57
Issue Time: 2012 Mar 09 0844 UTC

EXTENDED WARNING: Proton 100MeV Integral Flux above 1pfu expected
Extension to Serial Number: 56
Valid From: 2012 Mar 07 0300 UTC
Now Valid Until: 2012 Mar 09 1800 UTC
Warning Condition: Persistence
Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact.


Space Weather Message Code: WARK04
Serial Number: 1886
Issue Time: 2012 Mar 09 0844 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1885
Valid From: 2012 Mar 07 0145 UTC
Now Valid Until: 2012 Mar 09 1800 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK05
Serial Number: 754
Issue Time: 2012 Mar 09 0844 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 753
Valid From: 2012 Mar 08 1100 UTC
Now Valid Until: 2012 Mar 09 1500 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: WARK06
Serial Number: 188
Issue Time: 2012 Mar 09 0844 UTC

EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 187
Valid From: 2012 Mar 09 0330 UTC
Now Valid Until: 2012 Mar 09 1500 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washinton state.


Space Weather Message Code: WARK07
Serial Number: 35
Issue Time: 2012 Mar 09 0844 UTC

EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 34
Valid From: 2012 Mar 09 0700 UTC
Now Valid Until: 2012 Mar 09 1200 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.


Space Weather Message Code: ALTK07
Serial Number: 84
Issue Time: 2012 Mar 09 0724 UTC

ALERT: Geomagnetic K-index of 7
Threshold Reached: 2012 Mar 09 0724 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.


Space Weather Message Code: WARPX1
Serial Number: 346
Issue Time: 2012 Mar 09 0723 UTC

EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 345
Valid From: 2012 Mar 07 0030 UTC
Now Valid Until: 2012 Mar 10 0000 UTC
Warning Condition: persistence
Predicted NOAA Scale: S3 - Strong
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.


Space Weather Message Code: WARK07
Serial Number: 34
Issue Time: 2012 Mar 09 0658 UTC

WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2012 Mar 09 0700 UTC
Valid To: 2012 Mar 09 0900 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater - Strong to Extreme
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.


Space Weather Message Code: ALTK06
Serial Number: 278
Issue Time: 2012 Mar 09 0650 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2012 Mar 09 0649 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washinton state.


Space Weather Message Code: ALTK06
Serial Number: 277
Issue Time: 2012 Mar 09 0528 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2012 Mar 09 0526 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washinton state.


Space Weather Message Code: SUMXM5
Serial Number: 86
Issue Time: 2012 Mar 09 0516 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2012 Mar 09 0322 UTC
Maximum Time: 2012 Mar 09 0353 UTC
End Time: 2012 Mar 09 0418 UTC
X-ray Class: M6.3
Location: N17W01
NOAA Scale: R2 - Moderate

Comment: Flare location estimated based on GOES-15 SXI data.
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.


Space Weather Message Code: ALTTP2
Serial Number: 780
Issue Time: 2012 Mar 09 0430 UTC

ALERT: Type II Radio Emission
Begin Time: 2012 Mar 09 0343 UTC
Estimated Velocity: 1285 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: SUMPX3
Serial Number: 15
Issue Time: 2012 Mar 09 0358 UTC

SUMMARY: Proton Event 10MeV Integral Flux exceeded 1000pfu
Begin Time: 2012 Mar 07 1410 UTC
Maximum Time: 2012 Mar 08 1115 UTC
End Time: 2012 Mar 09 0210 UTC
Maximum 10MeV Flux: 6530 pfu
NOAA Scale: S3 - Strong


Space Weather Message Code: ALTXMF
Serial Number: 167
Issue Time: 2012 Mar 09 0345 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2012 Mar 09 0344 UTC
NOAA Scale: R2 - Moderate
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/drap/index.html.


Space Weather Message Code: WARK06
Serial Number: 187
Issue Time: 2012 Mar 09 0319 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2012 Mar 09 0330 UTC
Valid To: 2012 Mar 09 0900 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washinton state.


Space Weather Message Code: WARPC0
Serial Number: 56
Issue Time: 2012 Mar 08 2330 UTC

EXTENDED WARNING: Proton 100MeV Integral Flux above 1pfu expected
Extension to Serial Number: 55
Valid From: 2012 Mar 07 0300 UTC
Now Valid Until: 2012 Mar 09 1200 UTC
Warning Condition: Persistence
Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact.


Space Weather Message Code: WARK05
Serial Number: 753
Issue Time: 2012 Mar 08 2322 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 752
Valid From: 2012 Mar 08 1100 UTC
Now Valid Until: 2012 Mar 09 0900 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: WARK04
Serial Number: 1885
Issue Time: 2012 Mar 08 2320 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1884
Valid From: 2012 Mar 07 0145 UTC
Now Valid Until: 2012 Mar 09 1200 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: ALTK05
Serial Number: 679
Issue Time: 2012 Mar 08 1138 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2012 Mar 08 1130 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: SUMSUD
Serial Number: 147
Issue Time: 2012 Mar 08 1109 UTC

SUMMARY: Geomagnetic Sudden Impulse
Observed: 2012 Mar 08 1105 UTC
Deviation: 58 nT
Station: Boulder


Space Weather Message Code: WARK05
Serial Number: 752
Issue Time: 2012 Mar 08 1054 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2012 Mar 08 1100 UTC
Valid To: 2012 Mar 08 2359 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: WARSUD
Serial Number: 107
Issue Time: 2012 Mar 08 1052 UTC

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2012 Mar 08 1100 UTC
Valid To: 2012 Mar 08 1145 UTC
IP Shock Passage Observed: 2012 Mar 08 1045 UTC


Space Weather Message Code: WARPX1
Serial Number: 345
Issue Time: 2012 Mar 07 2355 UTC

EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 344
Valid From: 2012 Mar 07 0030 UTC
Now Valid Until: 2012 Mar 08 2359 UTC
Warning Condition: persistence
Predicted NOAA Scale: S3 - Strong
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.


Space Weather Message Code: WARPC0
Serial Number: 55
Issue Time: 2012 Mar 07 2354 UTC

EXTENDED WARNING: Proton 100MeV Integral Flux above 1pfu expected
Extension to Serial Number: 54
Valid From: 2012 Mar 07 0300 UTC
Now Valid Until: 2012 Mar 08 2359 UTC
Warning Condition: Onset
Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact.


Space Weather Message Code: WARK04
Serial Number: 1884
Issue Time: 2012 Mar 07 2351 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1883
Valid From: 2012 Mar 07 0145 UTC
Now Valid Until: 2012 Mar 08 2359 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: ALTEF3
Serial Number: 1868
Issue Time: 2012 Mar 07 2145 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1867
Begin Time: 2012 Mar 02 1425 UTC
Yesterday Maximum 2MeV Flux: 1228 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: WATA50
Serial Number: 43
Issue Time: 2012 Mar 07 1742 UTC

WATCH: Geomagnetic A-index of 50 or greater predicted
NOAA Scale: Periods reaching the G3 (Strong) Level Likely
Valid for UTC Day: 2012 Mar 08
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.


Space Weather Message Code: WATA20
Serial Number: 487
Issue Time: 2012 Mar 07 1742 UTC

WATCH: Geomagnetic A-index of 20 or greater predicted
NOAA Scale: Periods reaching the G1 (Minor) Level Likely
Valid for UTC Day: 2012 Mar 09
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: ALTK06
Serial Number: 276
Issue Time: 2012 Mar 07 1454 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2012 Mar 07 1448 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washinton state.


Space Weather Message Code: WARK06
Serial Number: 186
Issue Time: 2012 Mar 07 1451 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2012 Mar 07 1451 UTC
Valid To: 2012 Mar 07 2100 UTC
Warning Condition: Persistence
NOAA Scale: G2 - Moderate
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washinton state.


Space Weather Message Code: ALTPX3
Serial Number: 25
Issue Time: 2012 Mar 07 1417 UTC

ALERT: Proton Event 10MeV Integral Flux exceeded 1000pfu
Begin Time: 2012 Mar 07 1410 UTC
NOAA Scale: S3 - Strong
Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience increasing radiation exposures. Astronauts on EVA (extra-vehicular activity) are exposed to elevated radiation levels.
Spacecraft - Single-event upsets to satellite operations, noise in imaging systems, and slight reduction of efficiency in solar panels are likely.
Radio - Degraded or episodically blacked-out polar HF (high frequency) radio propagation.


Space Weather Message Code: WARPX1
Serial Number: 344
Issue Time: 2012 Mar 07 1159 UTC

EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 343
Valid From: 2012 Mar 07 0030 UTC
Now Valid Until: 2012 Mar 08 1200 UTC
Warning Condition: Onset
Predicted NOAA Scale: S2 - Moderate

Comment: This warning UPGRADED from S1(Minor) to S2(Moderate) due to increasing flux levels.
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.


Space Weather Message Code: WARK05
Serial Number: 751
Issue Time: 2012 Mar 07 1159 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 750
Valid From: 2012 Mar 07 0415 UTC
Now Valid Until: 2012 Mar 08 0000 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: ALTPX2
Serial Number: 49
Issue Time: 2012 Mar 07 1022 UTC

ALERT: Proton Event 10MeV Integral Flux exceeded 100pfu
Begin Time: 2012 Mar 07 1015 UTC
NOAA Scale: S2 - Moderate
Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience small, increased radiation exposures.
Spacecraft - Infrequent single-event upsets to satellites are possible.
Radio - Small effects on polar HF (high frequency) propagation resulting in fades at lower frequencies.


Space Weather Message Code: ALTK06
Serial Number: 275
Issue Time: 2012 Mar 07 0852 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2012 Mar 07 0848 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washinton state.


Space Weather Message Code: WARK06
Serial Number: 185
Issue Time: 2012 Mar 07 0751 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2012 Mar 07 0751 UTC
Valid To: 2012 Mar 07 1200 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washinton state.


Space Weather Message Code: ALTK05
Serial Number: 678
Issue Time: 2012 Mar 07 0637 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2012 Mar 07 0633 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: ALTPX1
Serial Number: 285
Issue Time: 2012 Mar 07 0526 UTC

ALERT: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2012 Mar 07 0510 UTC
NOAA Scale: S1 - Minor
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.


Space Weather Message Code: ALTK04
Serial Number: 1565
Issue Time: 2012 Mar 07 0517 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2012 Mar 07 0513 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: ALTTP4
Serial Number: 361
Issue Time: 2012 Mar 07 0435 UTC

ALERT: Type IV Radio Emission
Begin Time: 2012 Mar 07 0016 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.


Space Weather Message Code: SUMSUD
Serial Number: 146
Issue Time: 2012 Mar 07 0429 UTC

SUMMARY: Geomagnetic Sudden Impulse
Observed: 2012 Mar 07 0427 UTC
Deviation: 20 nT
Station: Boulder


Space Weather Message Code: ALTPC0
Serial Number: 35
Issue Time: 2012 Mar 07 0416 UTC

ALERT: Proton Event 100MeV Integral Flux exceeded 1pfu
Begin Time: 2012 Mar 07 0405 UTC
Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact.


Space Weather Message Code: WARK05
Serial Number: 750
Issue Time: 2012 Mar 07 0355 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2012 Mar 07 0415 UTC
Valid To: 2012 Mar 07 1200 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: WARK04
Serial Number: 1883
Issue Time: 2012 Mar 07 0354 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1882
Valid From: 2012 Mar 07 0145 UTC
Now Valid Until: 2012 Mar 08 0000 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARSUD
Serial Number: 106
Issue Time: 2012 Mar 07 0353 UTC

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2012 Mar 07 0415 UTC
Valid To: 2012 Mar 07 0500 UTC
IP Shock Passage Observed: 2012 Mar 07 0334 UTC


Space Weather Message Code: SUM10R
Serial Number: 531
Issue Time: 2012 Mar 07 0310 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2012 Mar 07 0007 UTC
Maximum Time: 2012 Mar 07 0117 UTC
End Time: 2012 Mar 07 0210 UTC
Duration: 123 minutes
Peak Flux: 7200 sfu
Latest Penticton Noon Flux: 138 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.


Space Weather Message Code: WARPC0
Serial Number: 54
Issue Time: 2012 Mar 07 0256 UTC

WARNING: Proton 100MeV Integral Flux above 1pfu expected
Valid From: 2012 Mar 07 0300 UTC
Valid To: 2012 Mar 07 2359 UTC
Warning Condition: Onset
Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact.


Space Weather Message Code: ALTTP2
Serial Number: 779
Issue Time: 2012 Mar 07 0215 UTC

ALERT: Type II Radio Emission
Begin Time: 2012 Mar 07 0110 UTC
Estimated Velocity: 1084 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: SUMX01
Serial Number: 79
Issue Time: 2012 Mar 07 0206 UTC

SUMMARY: X-ray Event exceeded X1
Begin Time: 2012 Mar 07 0105 UTC
Maximum Time: 2012 Mar 07 0114 UTC
End Time: 2012 Mar 07 0123 UTC
X-ray Class: X1.3
Location: N22E12
NOAA Scale: R3 - Strong
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.


Space Weather Message Code: WARK04
Serial Number: 1882
Issue Time: 2012 Mar 07 0135 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Mar 07 0145 UTC
Valid To: 2012 Mar 07 0600 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: ALTTP2
Serial Number: 778
Issue Time: 2012 Mar 07 0109 UTC

ALERT: Type II Radio Emission
Begin Time: 2012 Mar 07 0017 UTC
Estimated Velocity: 2273 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: SUMX01
Serial Number: 78
Issue Time: 2012 Mar 07 0057 UTC

SUMMARY: X-ray Event exceeded X1
Begin Time: 2012 Mar 07 0002 UTC
Maximum Time: 2012 Mar 07 0024 UTC
End Time: 2012 Mar 07 0040 UTC
X-ray Class: X5.4
Location: N17E29
NOAA Scale: R3 - Strong
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.


Space Weather Message Code: WARPX1
Serial Number: 343
Issue Time: 2012 Mar 07 0019 UTC

WARNING: Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2012 Mar 07 0030 UTC
Valid To: 2012 Mar 08 0000 UTC
Warning Condition: Onset
Predicted NOAA Scale: S1 - Minor
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.


Space Weather Message Code: ALTXMF
Serial Number: 166
Issue Time: 2012 Mar 07 0009 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2012 Mar 07 0008 UTC
NOAA Scale: R2 - Moderate
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/drap/index.html.


Space Weather Message Code: ALTEF3
Serial Number: 1867
Issue Time: 2012 Mar 06 1441 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1866
Begin Time: 2012 Mar 02 1425 UTC
Yesterday Maximum 2MeV Flux: 2186 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: WARK04
Serial Number: 1881
Issue Time: 2012 Mar 05 2238 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Mar 05 2300 UTC
Valid To: 2012 Mar 06 0900 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WATA20
Serial Number: 486
Issue Time: 2012 Mar 05 2110 UTC

WATCH: Geomagnetic A-index of 20 or greater predicted
NOAA Scale: Periods reaching the G1 (Minor) Level Likely
Valid for UTC Day: 2012 Mar 07
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: WARPX1
Serial Number: 342
Issue Time: 2012 Mar 05 1517 UTC

WARNING: Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2012 Mar 05 2100 UTC
Valid To: 2012 Mar 06 2100 UTC
Warning Condition: Onset
Predicted NOAA Scale: S1 - Minor
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.


Space Weather Message Code: ALTEF3
Serial Number: 1866
Issue Time: 2012 Mar 05 1307 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1865
Begin Time: 2012 Mar 02 1425 UTC
Yesterday Maximum 2MeV Flux: 1242 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: SUM10R
Serial Number: 530
Issue Time: 2012 Mar 05 0635 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2012 Mar 05 0334 UTC
Maximum Time: 2012 Mar 05 0434 UTC
End Time: 2012 Mar 05 0601 UTC
Duration: 147 minutes
Peak Flux: 12000 sfu
Latest Penticton Noon Flux: 120 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.


Space Weather Message Code: SUM10R
Serial Number: 529
Issue Time: 2012 Mar 05 0634 UTC

CANCEL SUMMARY: 10cm Radio Burst
Cancel Serial Number: 528
Original Issue Time: 2012 Mar 05 0631 UTC

Comment: Cancelled to correct times and magnitude of burst.
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.


Space Weather Message Code: SUM10R
Serial Number: 528
Issue Time: 2012 Mar 05 0631 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2012 Mar 05 0334 UTC
Maximum Time: 2012 Mar 05 0354 UTC
End Time: 2012 Mar 05 0427 UTC
Duration: 53 minutes
Peak Flux: 1500 sfu
Latest Penticton Noon Flux: 120 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.


Space Weather Message Code: SUMX01
Serial Number: 77
Issue Time: 2012 Mar 05 0448 UTC

SUMMARY: X-ray Event exceeded X1
Begin Time: 2012 Mar 05 0230 UTC
Maximum Time: 2012 Mar 05 0409 UTC
End Time: 2012 Mar 05 0443 UTC
X-ray Class: X1.1
Optical Class: 2b
Location: N15E54
NOAA Scale: R3 - Strong
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.


Space Weather Message Code: ALTXMF
Serial Number: 165
Issue Time: 2012 Mar 05 0346 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2012 Mar 05 0345 UTC
NOAA Scale: R2 - Moderate
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/drap/index.html.


Space Weather Message Code: ALTEF3
Serial Number: 1865
Issue Time: 2012 Mar 04 1601 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1864
Begin Time: 2012 Mar 02 1425 UTC
Yesterday Maximum 2MeV Flux: 2070 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTTP4
Serial Number: 360
Issue Time: 2012 Mar 04 1302 UTC

ALERT: Type IV Radio Emission
Begin Time: 2012 Mar 04 1040 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.


Space Weather Message Code: SUM10R
Serial Number: 527
Issue Time: 2012 Mar 04 1230 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2012 Mar 04 1126 UTC
Maximum Time: 2012 Mar 04 1135 UTC
End Time: 2012 Mar 04 1212 UTC
Duration: 46 minutes
Peak Flux: 750 sfu
Latest Penticton Noon Flux: 116 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.


Space Weather Message Code: WARK04
Serial Number: 1880
Issue Time: 2012 Mar 04 0550 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1879
Valid From: 2012 Mar 04 0240 UTC
Now Valid Until: 2012 Mar 04 1200 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: ALTK04
Serial Number: 1564
Issue Time: 2012 Mar 04 0240 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2012 Mar 04 0237 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK04
Serial Number: 1879
Issue Time: 2012 Mar 04 0235 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Mar 04 0240 UTC
Valid To: 2012 Mar 04 0600 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: SUM10R
Serial Number: 526
Issue Time: 2012 Mar 03 2018 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2012 Mar 03 1828 UTC
Maximum Time: 2012 Mar 03 1846 UTC
End Time: 2012 Mar 03 1848 UTC
Duration: 20 minutes
Peak Flux: 220 sfu
Latest Penticton Noon Flux: 108 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.


Space Weather Message Code: ALTEF3
Serial Number: 1864
Issue Time: 2012 Mar 03 1318 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1863
Begin Time: 2012 Mar 02 1425 UTC
Yesterday Maximum 2MeV Flux: 2378 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 1863
Issue Time: 2012 Mar 02 1447 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2012 Mar 02 1425 UTC
Station: GOES13
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: WARK04
Serial Number: 1878
Issue Time: 2012 Mar 01 2330 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1877
Valid From: 2012 Mar 01 1940 UTC
Now Valid Until: 2012 Mar 02 0900 UTC
Warning Condition: Persistence

Comment: Bz remains southward.
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: ALTK04
Serial Number: 1563
Issue Time: 2012 Mar 01 1946 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2012 Mar 01 1942 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK04
Serial Number: 1877
Issue Time: 2012 Mar 01 1940 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Mar 01 1940 UTC
Valid To: 2012 Mar 01 2359 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK04
Serial Number: 1876
Issue Time: 2012 Mar 01 0339 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Mar 01 0340 UTC
Valid To: 2012 Mar 01 0900 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.