Alerts Issued in February 2015


Space Weather Message Code: ALTK04
Serial Number: 1764
Issue Time: 2015 Feb 28 1757 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2015 Feb 28 1756 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
www.swpc.noaa.gov/noaa-scales-explanation
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: 2467
Issue Time: 2015 Feb 28 1655 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2015 Feb 28 1655 UTC
Valid To: 2015 Mar 01 1400 UTC
Warning Condition: Onset
www.swpc.noaa.gov/noaa-scales-explanation
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: 606
Issue Time: 2015 Feb 27 2124 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Feb 28: G1 (Minor) Mar 01: G1 (Minor) Mar 02: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
www.swpc.noaa.gov/noaa-scales-explanation
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: 605
Issue Time: 2015 Feb 26 2053 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Feb 27: None (Below G1) Feb 28: G1 (Minor) Mar 01: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
www.swpc.noaa.gov/noaa-scales-explanation
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: 604
Issue Time: 2015 Feb 26 0801 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Feb 26: None (Below G1) Feb 27: None (Below G1) Feb 28: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
www.swpc.noaa.gov/noaa-scales-explanation
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: 603
Issue Time: 2015 Feb 25 1956 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Feb 26: None (Below G1) Feb 27: None (Below G1) Feb 28: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
www.swpc.noaa.gov/noaa-scales-explanation
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: 2466
Issue Time: 2015 Feb 25 0806 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2015 Feb 25 0805 UTC
Valid To: 2015 Feb 25 2200 UTC
Warning Condition: Onset
www.swpc.noaa.gov/noaa-scales-explanation
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: 2465
Issue Time: 2015 Feb 24 2224 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2015 Feb 24 2223 UTC
Valid To: 2015 Feb 25 0400 UTC
Warning Condition: Onset
www.swpc.noaa.gov/noaa-scales-explanation
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: 964
Issue Time: 2015 Feb 24 0652 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 963
Valid From: 2015 Feb 24 0228 UTC
Now Valid Until: 2015 Feb 24 1400 UTC
Warning Condition: Persistence
www.swpc.noaa.gov/noaa-scales-explanation
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: 2464
Issue Time: 2015 Feb 24 0355 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2463
Valid From: 2015 Feb 23 0105 UTC
Now Valid Until: 2015 Feb 24 1600 UTC
Warning Condition: Persistence
www.swpc.noaa.gov/noaa-scales-explanation
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: 252
Issue Time: 2015 Feb 24 0259 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2015 Feb 24 0258 UTC
Valid To: 2015 Feb 24 0700 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
www.swpc.noaa.gov/noaa-scales-explanation
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: 769
Issue Time: 2015 Feb 24 0231 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2015 Feb 24 0231 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
www.swpc.noaa.gov/noaa-scales-explanation
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: 963
Issue Time: 2015 Feb 24 0228 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2015 Feb 24 0228 UTC
Valid To: 2015 Feb 24 0700 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
www.swpc.noaa.gov/noaa-scales-explanation
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: 1763
Issue Time: 2015 Feb 23 1738 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2015 Feb 23 1738 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
www.swpc.noaa.gov/noaa-scales-explanation
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: 2463
Issue Time: 2015 Feb 23 0106 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2015 Feb 23 0105 UTC
Valid To: 2015 Feb 24 0400 UTC
Warning Condition: Onset
www.swpc.noaa.gov/noaa-scales-explanation
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: 2462
Issue Time: 2015 Feb 18 0730 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2461
Valid From: 2015 Feb 16 2245 UTC
Now Valid Until: 2015 Feb 18 1600 UTC
Warning Condition: Persistence
www.swpc.noaa.gov/noaa-scales-explanation
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: 768
Issue Time: 2015 Feb 17 2339 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2015 Feb 17 2338 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
www.swpc.noaa.gov/noaa-scales-explanation
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: 962
Issue Time: 2015 Feb 17 2331 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2015 Feb 17 2331 UTC
Valid To: 2015 Feb 18 0600 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
www.swpc.noaa.gov/noaa-scales-explanation
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: 601
Issue Time: 2015 Feb 17 2258 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Feb 18: G1 (Minor) Feb 19: None (Below G1) Feb 20: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
www.swpc.noaa.gov/noaa-scales-explanation
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: 2461
Issue Time: 2015 Feb 17 2241 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2460
Valid From: 2015 Feb 16 2245 UTC
Now Valid Until: 2015 Feb 18 0800 UTC
Warning Condition: Persistence
www.swpc.noaa.gov/noaa-scales-explanation
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: 2460
Issue Time: 2015 Feb 17 1329 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2459
Valid From: 2015 Feb 16 2245 UTC
Now Valid Until: 2015 Feb 17 2359 UTC
Warning Condition: Persistence
www.swpc.noaa.gov/noaa-scales-explanation
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: 1762
Issue Time: 2015 Feb 17 1202 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2015 Feb 17 1200 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
www.swpc.noaa.gov/noaa-scales-explanation
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: 2459
Issue Time: 2015 Feb 16 2242 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2015 Feb 16 2245 UTC
Valid To: 2015 Feb 17 1400 UTC
Warning Condition: Onset
www.swpc.noaa.gov/noaa-scales-explanation
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: 2458
Issue Time: 2015 Feb 11 0428 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2015 Feb 11 0427 UTC
Valid To: 2015 Feb 11 1400 UTC
Warning Condition: Onset
www.swpc.noaa.gov/noaa-scales-explanation
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: 491
Issue Time: 2015 Feb 10 0033 UTC

ALERT: Type IV Radio Emission
Begin Time: 2015 Feb 09 2335 UTC
www.swpc.noaa.gov/noaa-scales-explanation
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: 993
Issue Time: 2015 Feb 09 2358 UTC

ALERT: Type II Radio Emission
Begin Time: 2015 Feb 09 2323 UTC
Estimated Velocity: 1190 km/s
www.swpc.noaa.gov/noaa-scales-explanation
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: 992
Issue Time: 2015 Feb 08 2318 UTC

ALERT: Type II Radio Emission
Begin Time: 2015 Feb 08 2238 UTC
Estimated Velocity: 626 km/s
www.swpc.noaa.gov/noaa-scales-explanation
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: 2457
Issue Time: 2015 Feb 07 1041 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2015 Feb 07 1041 UTC
Valid To: 2015 Feb 07 1600 UTC
Warning Condition: Onset
www.swpc.noaa.gov/noaa-scales-explanation
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: 1761
Issue Time: 2015 Feb 05 1701 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2015 Feb 05 1700 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
www.swpc.noaa.gov/noaa-scales-explanation
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: 2456
Issue Time: 2015 Feb 05 1320 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2455
Valid From: 2015 Feb 05 0452 UTC
Now Valid Until: 2015 Feb 05 1900 UTC
Warning Condition: Onset
www.swpc.noaa.gov/noaa-scales-explanation
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: 2153
Issue Time: 2015 Feb 05 0506 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2152
Begin Time: 2015 Feb 03 1305 UTC
Yesterday Maximum 2MeV Flux: 7431 pfu
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: WARK04
Serial Number: 2455
Issue Time: 2015 Feb 05 0453 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2015 Feb 05 0452 UTC
Valid To: 2015 Feb 05 1400 UTC
Warning Condition: Onset
www.swpc.noaa.gov/noaa-scales-explanation
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: 2152
Issue Time: 2015 Feb 04 1025 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2151
Begin Time: 2015 Feb 03 1305 UTC
Yesterday Maximum 2MeV Flux: 3147 pfu
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: WARK04
Serial Number: 2454
Issue Time: 2015 Feb 03 2255 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2453
Valid From: 2015 Feb 03 1655 UTC
Now Valid Until: 2015 Feb 04 0400 UTC
Warning Condition: Persistence
www.swpc.noaa.gov/noaa-scales-explanation
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: 2453
Issue Time: 2015 Feb 03 1653 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2015 Feb 03 1655 UTC
Valid To: 2015 Feb 03 2300 UTC
Warning Condition: Onset
www.swpc.noaa.gov/noaa-scales-explanation
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: 2151
Issue Time: 2015 Feb 03 1321 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2015 Feb 03 1305 UTC
Station: GOES13
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: WARK04
Serial Number: 2452
Issue Time: 2015 Feb 03 0348 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2451
Valid From: 2015 Feb 02 2040 UTC
Now Valid Until: 2015 Feb 03 1400 UTC
Warning Condition: Persistence
www.swpc.noaa.gov/noaa-scales-explanation
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: 2451
Issue Time: 2015 Feb 02 2042 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2015 Feb 02 2040 UTC
Valid To: 2015 Feb 03 0400 UTC
Warning Condition: Persistence

Comment: Original Warning was extended, but issued with incorrect date. Should have been valid until 03 Feb 2015 0400 UTC, not 02 Feb 2015 0400 UTC.
www.swpc.noaa.gov/noaa-scales-explanation
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: 2450
Issue Time: 2015 Feb 02 1855 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2449
Valid From: 2015 Jan 31 2305 UTC
Now Valid Until: 2015 Feb 02 0400 UTC
Warning Condition: Persistence
www.swpc.noaa.gov/noaa-scales-explanation
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: 961
Issue Time: 2015 Feb 02 1227 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 960
Valid From: 2015 Feb 01 2105 UTC
Now Valid Until: 2015 Feb 03 0000 UTC
Warning Condition: Persistence
www.swpc.noaa.gov/noaa-scales-explanation
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: 960
Issue Time: 2015 Feb 02 0339 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 959
Valid From: 2015 Feb 01 2105 UTC
Now Valid Until: 2015 Feb 02 1300 UTC
Warning Condition: Persistence
www.swpc.noaa.gov/noaa-scales-explanation
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: ALTK05
Serial Number: 767
Issue Time: 2015 Feb 01 2355 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2015 Feb 01 2355 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
www.swpc.noaa.gov/noaa-scales-explanation
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: 959
Issue Time: 2015 Feb 01 2103 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2015 Feb 01 2105 UTC
Valid To: 2015 Feb 02 0400 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
www.swpc.noaa.gov/noaa-scales-explanation
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: 600
Issue Time: 2015 Feb 01 1938 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Feb 01: G1 (Minor) Feb 02: G1 (Minor) Feb 03: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
www.swpc.noaa.gov/noaa-scales-explanation
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: 2449
Issue Time: 2015 Feb 01 1835 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2448
Valid From: 2015 Jan 31 2305 UTC
Now Valid Until: 2015 Feb 02 1900 UTC
Warning Condition: Persistence
www.swpc.noaa.gov/noaa-scales-explanation
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: 1760
Issue Time: 2015 Feb 01 0007 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2015 Jan 31 2359 UTC
Synoptic Period: 2100-0000 UTC
Active Warning: Yes
www.swpc.noaa.gov/noaa-scales-explanation
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.