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Alerts Issued in June 2013

Space Weather Message Code: ALTTP2
Serial Number: 861
Issue Time: 2013 Jun 14 0109 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Jun 14 0012 UTC
Estimated Velocity: 431 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: WARK04
Serial Number: 2106
Issue Time: 2013 Jun 10 0834 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2105
Valid From: 2013 Jun 10 0515 UTC
Now Valid Until: 2013 Jun 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: ALTK04
Serial Number: 1645
Issue Time: 2013 Jun 10 0520 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2013 Jun 10 0520 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: 2105
Issue Time: 2013 Jun 10 0515 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2013 Jun 10 0515 UTC
Valid To: 2013 Jun 10 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: 529
Issue Time: 2013 Jun 09 1510 UTC

CANCEL WATCH: Geomagnetic Storm Category G1 Predicted
Cancel Serial Number: 528
Original Issue Time: 2013 Jun 07 2004 UTC

Comment: The G1 Watch is cancelled as current space weather conditions are nominal and expected to remain so.
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: 2031
Issue Time: 2013 Jun 09 0806 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2030
Begin Time: 2013 Jun 07 1115 UTC
Yesterday Maximum 2MeV Flux: 2820 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Space Weather Message Code: ALTEF3
Serial Number: 2030
Issue Time: 2013 Jun 08 1140 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2029
Begin Time: 2013 Jun 07 1115 UTC
Yesterday Maximum 2MeV Flux: 4100 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Space Weather Message Code: SUMXM5
Serial Number: 104
Issue Time: 2013 Jun 07 2326 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2013 Jun 07 2211 UTC
Maximum Time: 2013 Jun 07 2249 UTC
End Time: 2013 Jun 07 2304 UTC
X-ray Class: M5.9
Location: S28W73
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: SUM10R
Serial Number: 584
Issue Time: 2013 Jun 07 2302 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2013 Jun 07 2242 UTC
Maximum Time: 2013 Jun 07 2243 UTC
End Time: 2013 Jun 07 2246 UTC
Duration: 4 minutes
Peak Flux: 160 sfu
Latest Penticton Noon Flux: 110 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: ALTXMF
Serial Number: 192
Issue Time: 2013 Jun 07 2251 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2013 Jun 07 2248 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: WATA20
Serial Number: 528
Issue Time: 2013 Jun 07 2004 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Jun 08: None (Below G1) Jun 09: G1 (Minor) Jun 10: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
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: WATA20
Serial Number: 527
Issue Time: 2013 Jun 07 1937 UTC

CANCEL WATCH: Geomagnetic Storm Category G1 Predicted
Cancel Serial Number: 526
Original Issue Time: 2013 Jun 06 1951 UTC

Comment: Conditions no longer warrant continued watch for 08 June. An additional watch will be issued for 09 June.
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: 2029
Issue Time: 2013 Jun 07 1133 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2013 Jun 07 1115 UTC
Station: GOES-13
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Space Weather Message Code: WARK04
Serial Number: 2104
Issue Time: 2013 Jun 07 1129 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2103
Valid From: 2013 Jun 06 1530 UTC
Now Valid Until: 2013 Jun 07 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: 853
Issue Time: 2013 Jun 07 0543 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 851
Valid From: 2013 Jun 07 0150 UTC
Now Valid Until: 2013 Jun 07 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: WARK06
Serial Number: 227
Issue Time: 2013 Jun 07 0543 UTC

EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 225
Valid From: 2013 Jun 07 0350 UTC
Now Valid Until: 2013 Jun 07 0900 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 Washington state.

Space Weather Message Code: WARK04
Serial Number: 2103
Issue Time: 2013 Jun 07 0543 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2101
Valid From: 2013 Jun 06 1530 UTC
Now Valid Until: 2013 Jun 07 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: ALTK06
Serial Number: 309
Issue Time: 2013 Jun 07 0519 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2013 Jun 07 0518 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 Washington state.

Space Weather Message Code: WARK06
Serial Number: 225
Issue Time: 2013 Jun 07 0349 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2013 Jun 07 0350 UTC
Valid To: 2013 Jun 07 0600 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 Washington state.

Space Weather Message Code: ALTK05
Serial Number: 720
Issue Time: 2013 Jun 07 0223 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2013 Jun 07 0221 UTC
Synoptic Period: 0000-0300 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: WARK05
Serial Number: 851
Issue Time: 2013 Jun 07 0147 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2013 Jun 07 0150 UTC
Valid To: 2013 Jun 07 0600 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: 2101
Issue Time: 2013 Jun 06 2034 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2100
Valid From: 2013 Jun 06 1530 UTC
Now Valid Until: 2013 Jun 07 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: WATA20
Serial Number: 526
Issue Time: 2013 Jun 06 1951 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Jun 07: G1 (Minor) Jun 08: G1 (Minor) Jun 09: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
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: 1644
Issue Time: 2013 Jun 06 1545 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2013 Jun 06 1539 UTC
Synoptic Period: 1500-1800 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: 2100
Issue Time: 2013 Jun 06 1528 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2013 Jun 06 1530 UTC
Valid To: 2013 Jun 06 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: ALTEF3
Serial Number: 2028
Issue Time: 2013 Jun 06 0507 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2027
Begin Time: 2013 Jun 02 1445 UTC
Yesterday Maximum 2MeV Flux: 24427 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Space Weather Message Code: ALTTP4
Serial Number: 420
Issue Time: 2013 Jun 05 0939 UTC

ALERT: Type IV Radio Emission
Begin Time: 2013 Jun 05 0844 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: ALTEF3
Serial Number: 2027
Issue Time: 2013 Jun 05 0507 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2026
Begin Time: 2013 Jun 02 1445 UTC
Yesterday Maximum 2MeV Flux: 31836 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Space Weather Message Code: ALTEF3
Serial Number: 2026
Issue Time: 2013 Jun 04 0537 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2025
Begin Time: 2013 Jun 02 1445 UTC
Yesterday Maximum 2MeV Flux: 12700 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Space Weather Message Code: ALTEF3
Serial Number: 2025
Issue Time: 2013 Jun 03 0527 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2024
Begin Time: 2013 Jun 02 1445 UTC
Yesterday Maximum 2MeV Flux: 4709 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Space Weather Message Code: ALTTP2
Serial Number: 860
Issue Time: 2013 Jun 03 0012 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Jun 02 2350 UTC
Estimated Velocity: 534 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: ALTTP4
Serial Number: 419
Issue Time: 2013 Jun 02 1631 UTC

ALERT: Type IV Radio Emission
Begin Time: 2013 Jun 02 1603 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: 859
Issue Time: 2013 Jun 02 1521 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Jun 02 1452 UTC
Estimated Velocity: 892 km/s

Comment: This Type II was associated with a B3/Sf flare from Region 1760 (N12E20)
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: 2024
Issue Time: 2013 Jun 02 1504 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2013 Jun 02 1445 UTC
Station: GOES15
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Space Weather Message Code: WATA20
Serial Number: 525
Issue Time: 2013 Jun 02 1503 UTC

CANCEL WATCH: Geomagnetic Storm Category G1 Predicted
Cancel Serial Number: 524
Original Issue Time: 2013 Jun 01 2002 UTC

Comment: Conditions conducive for G1 (Minor) geomagnetic storm conditions no longer exist.
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: 2099
Issue Time: 2013 Jun 02 0655 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2098
Valid From: 2013 May 31 2319 UTC
Now Valid Until: 2013 Jun 02 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: ALTK05
Serial Number: 719
Issue Time: 2013 Jun 02 0148 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2013 Jun 02 0146 UTC
Synoptic Period: 0000-0300 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: WARK05
Serial Number: 850
Issue Time: 2013 Jun 02 0138 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2013 Jun 02 0137 UTC
Valid To: 2013 Jun 02 0600 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: WATA20
Serial Number: 524
Issue Time: 2013 Jun 01 2002 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Jun 02: G1 (Minor) Jun 03: None (Below G1) Jun 04: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
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: 308
Issue Time: 2013 Jun 01 1502 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2013 Jun 01 1500 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 Washington state.

Space Weather Message Code: WARK05
Serial Number: 849
Issue Time: 2013 Jun 01 1430 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 848
Valid From: 2013 Jun 01 0040 UTC
Now Valid Until: 2013 Jun 01 2300 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: 2098
Issue Time: 2013 Jun 01 1430 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2097
Valid From: 2013 May 31 2319 UTC
Now Valid Until: 2013 Jun 02 0700 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: WARK06
Serial Number: 224
Issue Time: 2013 Jun 01 1422 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2013 Jun 01 1421 UTC
Valid To: 2013 Jun 01 1900 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 Washington state.

Space Weather Message Code: ALTK06
Serial Number: 307
Issue Time: 2013 Jun 01 0904 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2013 Jun 01 0900 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 Washington state.

Space Weather Message Code: WARK05
Serial Number: 848
Issue Time: 2013 Jun 01 0904 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 847
Valid From: 2013 Jun 01 0040 UTC
Now Valid Until: 2013 Jun 01 1600 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: 306
Issue Time: 2013 Jun 01 0506 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2013 Jun 01 0502 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 Washington state.

Space Weather Message Code: WARK06
Serial Number: 223
Issue Time: 2013 Jun 01 0506 UTC

EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 222
Valid From: 2013 Jun 01 0055 UTC
Now Valid Until: 2013 Jun 01 0900 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 Washington state.

Space Weather Message Code: WARK04
Serial Number: 2097
Issue Time: 2013 Jun 01 0506 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2096
Valid From: 2013 May 31 2319 UTC
Now Valid Until: 2013 Jun 01 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: 847
Issue Time: 2013 Jun 01 0506 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 846
Valid From: 2013 Jun 01 0040 UTC
Now Valid Until: 2013 Jun 01 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: ALTK06
Serial Number: 305
Issue Time: 2013 Jun 01 0259 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2013 Jun 01 0258 UTC
Synoptic Period: 0000-0300 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 Washington state.

Space Weather Message Code: WARK06
Serial Number: 222
Issue Time: 2013 Jun 01 0053 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2013 Jun 01 0055 UTC
Valid To: 2013 Jun 01 0600 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 Washington state.

Space Weather Message Code: ALTK05
Serial Number: 718
Issue Time: 2013 Jun 01 0052 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2013 Jun 01 0051 UTC
Synoptic Period: 0000-0300 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: WARK04
Serial Number: 2096
Issue Time: 2013 Jun 01 0041 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2095
Valid From: 2013 May 31 2319 UTC
Now Valid Until: 2013 Jun 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.

Space Weather Message Code: WARK05
Serial Number: 846
Issue Time: 2013 Jun 01 0040 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2013 Jun 01 0040 UTC
Valid To: 2013 Jun 01 0600 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.

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