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Alerts Issued in December 2013


Space Weather Message Code: SUMXM5
Serial Number: 109
Issue Time: 2013 Dec 31 2331 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2013 Dec 31 2145 UTC
Maximum Time: 2013 Dec 31 2158 UTC
End Time: 2013 Dec 31 2220 UTC
X-ray Class: M6.4
Optical Class: 2n
Location: S16W35
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: 601
Issue Time: 2013 Dec 31 2224 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2013 Dec 31 2149 UTC
Maximum Time: 2013 Dec 31 2151 UTC
End Time: 2013 Dec 31 2155 UTC
Duration: 6 minutes
Peak Flux: 160 sfu
Latest Penticton Noon Flux: 145 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: 205
Issue Time: 2013 Dec 31 2157 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2013 Dec 31 2156 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: 559
Issue Time: 2013 Dec 31 1707 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Jan 01: None (Below G1) Jan 02: G1 (Minor) Jan 03: 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: SUMPX1
Serial Number: 71
Issue Time: 2013 Dec 29 1538 UTC

SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2013 Dec 28 2150 UTC
Maximum Time: 2013 Dec 28 2315 UTC
End Time: 2013 Dec 29 0725 UTC
Maximum 10MeV Flux: 29 pfu
NOAA Scale: S1 - Minor


Space Weather Message Code: ALTPX1
Serial Number: 304
Issue Time: 2013 Dec 28 2209 UTC

ALERT: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2013 Dec 28 2150 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: 408
Issue Time: 2013 Dec 28 2118 UTC

WARNING: Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2013 Dec 28 2120 UTC
Valid To: 2013 Dec 29 0700 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: ALTK04
Serial Number: 1684
Issue Time: 2013 Dec 14 1918 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2013 Dec 14 1911 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: 2202
Issue Time: 2013 Dec 14 1618 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2013 Dec 14 1620 UTC
Valid To: 2013 Dec 15 0100 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: ALTK04
Serial Number: 1683
Issue Time: 2013 Dec 14 0449 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2013 Dec 14 0449 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: 2201
Issue Time: 2013 Dec 14 0136 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2013 Dec 14 0135 UTC
Valid To: 2013 Dec 14 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: SUMSUD
Serial Number: 182
Issue Time: 2013 Dec 13 1336 UTC

SUMMARY: Geomagnetic Sudden Impulse
Observed: 2013 Dec 13 1323 UTC
Deviation: 26 nT
Station: Canberra


Space Weather Message Code: WARSUD
Serial Number: 142
Issue Time: 2013 Dec 13 1236 UTC

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2013 Dec 13 1315 UTC
Valid To: 2013 Dec 13 1345 UTC
IP Shock Passage Observed: 2013 Dec 13 1209 UTC


Space Weather Message Code: WATA20
Serial Number: 558
Issue Time: 2013 Dec 12 1857 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Dec 13: G1 (Minor) Dec 14: G1 (Minor) Dec 15: 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: ALTTP2
Serial Number: 897
Issue Time: 2013 Dec 12 0838 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Dec 12 0316 UTC
Estimated Velocity: 511 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: 440
Issue Time: 2013 Dec 12 0417 UTC

ALERT: Type IV Radio Emission
Begin Time: 2013 Dec 12 0318 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: WATA20
Serial Number: 557
Issue Time: 2013 Dec 11 1623 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Dec 12: None (Below G1) Dec 13: G1 (Minor) Dec 14: 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: WARK04
Serial Number: 2200
Issue Time: 2013 Dec 08 1649 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2199
Valid From: 2013 Dec 08 0050 UTC
Now Valid Until: 2013 Dec 09 1300 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: 878
Issue Time: 2013 Dec 08 0934 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 877
Valid From: 2013 Dec 08 0200 UTC
Now Valid Until: 2013 Dec 08 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: WARK04
Serial Number: 2199
Issue Time: 2013 Dec 08 0934 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2198
Valid From: 2013 Dec 08 0050 UTC
Now Valid Until: 2013 Dec 08 2000 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: ALTK06
Serial Number: 314
Issue Time: 2013 Dec 08 0224 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2013 Dec 08 0217 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: 234
Issue Time: 2013 Dec 08 0202 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2013 Dec 08 0202 UTC
Valid To: 2013 Dec 08 0700 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: 732
Issue Time: 2013 Dec 08 0201 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2013 Dec 08 0158 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: 877
Issue Time: 2013 Dec 08 0153 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2013 Dec 08 0200 UTC
Valid To: 2013 Dec 08 1000 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: 1682
Issue Time: 2013 Dec 08 0129 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2013 Dec 08 0121 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: 2198
Issue Time: 2013 Dec 08 0045 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2013 Dec 08 0050 UTC
Valid To: 2013 Dec 08 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: ALTTP2
Serial Number: 896
Issue Time: 2013 Dec 07 0812 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Dec 07 0723 UTC
Estimated Velocity: 691 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: SUM10R
Serial Number: 600
Issue Time: 2013 Dec 07 0743 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2013 Dec 07 0721 UTC
Maximum Time: 2013 Dec 07 0722 UTC
End Time: 2013 Dec 07 0725 UTC
Duration: 4 minutes
Peak Flux: 220 sfu
Latest Penticton Noon Flux: 151 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.