NOAA / Space Weather Prediction Center

Mass Ejection graphic

Space Weather Alerts

Alerts/Displays - Archive - Email Registration - Help/Samples

Alerts in Graphical Timelines: Past 7 days and Currently in Effect
Alerts in Text Format: Current month and Previous month

Alerts Issued in February 2012


Space Weather Message Code: WARK05
Serial Number: 749
Issue Time: 2012 Feb 28 0818 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2012 Feb 28 0820 UTC
Valid To: 2012 Feb 28 1200 UTC
Warning Condition: Persistence
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: 1875
Issue Time: 2012 Feb 27 2351 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1874
Valid From: 2012 Feb 27 0220 UTC
Now Valid Until: 2012 Feb 28 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: 677
Issue Time: 2012 Feb 27 2102 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2012 Feb 27 2100 UTC
Synoptic Period: 1800-2100 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: 748
Issue Time: 2012 Feb 27 1939 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2012 Feb 27 1940 UTC
Valid To: 2012 Feb 27 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: WARK04
Serial Number: 1874
Issue Time: 2012 Feb 27 1419 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1873
Valid From: 2012 Feb 27 0220 UTC
Now Valid Until: 2012 Feb 27 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: ALTK04
Serial Number: 1562
Issue Time: 2012 Feb 27 0227 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2012 Feb 27 0224 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: 1873
Issue Time: 2012 Feb 27 0218 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Feb 27 0220 UTC
Valid To: 2012 Feb 27 1500 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: 145
Issue Time: 2012 Feb 26 2147 UTC

SUMMARY: Geomagnetic Sudden Impulse
Observed: 2012 Feb 26 2141 UTC
Deviation: 19 nT
Station: Boulder


Space Weather Message Code: WARSUD
Serial Number: 105
Issue Time: 2012 Feb 26 2111 UTC

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2012 Feb 26 2130 UTC
Valid To: 2012 Feb 26 2200 UTC
IP Shock Passage Observed: 2012 Feb 26 2058 UTC


Space Weather Message Code: WARK04
Serial Number: 1872
Issue Time: 2012 Feb 22 0830 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Feb 22 0900 UTC
Valid To: 2012 Feb 22 1500 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: 144
Issue Time: 2012 Feb 22 0230 UTC

SUMMARY: Geomagnetic Sudden Impulse
Observed: 2012 Feb 22 0223 UTC
Deviation: 20 nT
Station: Boulder


Space Weather Message Code: WARK04
Serial Number: 1871
Issue Time: 2012 Feb 22 0150 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Feb 22 0205 UTC
Valid To: 2012 Feb 22 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: WARSUD
Serial Number: 104
Issue Time: 2012 Feb 22 0145 UTC

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2012 Feb 22 0205 UTC
Valid To: 2012 Feb 22 0235 UTC
IP Shock Passage Observed: 2012 Feb 22 0120 UTC


Space Weather Message Code: ALTEF3
Serial Number: 1862
Issue Time: 2012 Feb 21 1015 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1861
Begin Time: 2012 Feb 20 1905 UTC
Yesterday Maximum 2MeV Flux: 1202 pfu
Potential Impacts: Satellite systems may experience significant
charging resulting in increased risk to satellite systems.


Space Weather Message Code: WARK04
Serial Number: 1870
Issue Time: 2012 Feb 20 2222 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Feb 20 2245 UTC
Valid To: 2012 Feb 21 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: ALTEF3
Serial Number: 1861
Issue Time: 2012 Feb 20 1926 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2012 Feb 20 1905 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: 1869
Issue Time: 2012 Feb 20 0835 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1868
Valid From: 2012 Feb 20 0339 UTC
Now Valid Until: 2012 Feb 20 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: ALTK04
Serial Number: 1561
Issue Time: 2012 Feb 20 0340 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2012 Feb 20 0339 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: 1868
Issue Time: 2012 Feb 20 0339 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Feb 20 0339 UTC
Valid To: 2012 Feb 20 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: ALTK05
Serial Number: 676
Issue Time: 2012 Feb 19 0601 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2012 Feb 19 0600 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor


Space Weather Message Code: WARK05
Serial Number: 747
Issue Time: 2012 Feb 19 0424 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2012 Feb 19 0425 UTC
Valid To: 2012 Feb 19 0900 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: 1560
Issue Time: 2012 Feb 19 0150 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2012 Feb 19 0147 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: 1867
Issue Time: 2012 Feb 19 0042 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Feb 19 0041 UTC
Valid To: 2012 Feb 19 1241 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: 1866
Issue Time: 2012 Feb 16 0356 UTC

CANCEL WARNING: Geomagnetic K-index of 4 expected
Cancel Serial Number: 1865
Original Issue Time: 2012 Feb 15 0409 UTC

Comment: Conditions for this Warning are no longer present.
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: 746
Issue Time: 2012 Feb 16 0349 UTC

CANCEL WARNING: Geomagnetic K-index of 5 expected
Cancel Serial Number: 745
Original Issue Time: 2012 Feb 15 2205 UTC

Comment: Conditions for this Warning are no longer present.
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: 1865
Issue Time: 2012 Feb 15 2217 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1864
Valid From: 2012 Feb 15 0410 UTC
Now Valid Until: 2012 Feb 16 0900 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: 745
Issue Time: 2012 Feb 15 2205 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2012 Feb 15 2205 UTC
Valid To: 2012 Feb 16 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: ALTK04
Serial Number: 1559
Issue Time: 2012 Feb 15 2201 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2012 Feb 15 2159 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: 1864
Issue Time: 2012 Feb 15 1717 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1863
Valid From: 2012 Feb 15 0410 UTC
Now Valid Until: 2012 Feb 16 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: WARK04
Serial Number: 1863
Issue Time: 2012 Feb 15 0856 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1862
Valid From: 2012 Feb 15 0410 UTC
Now Valid Until: 2012 Feb 15 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: 744
Issue Time: 2012 Feb 15 0854 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 743
Valid From: 2012 Feb 15 0500 UTC
Now Valid Until: 2012 Feb 15 1500 UTC
Warning Condition: Persistence

Comment: Bz remains at -9nT.
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: 743
Issue Time: 2012 Feb 15 0503 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2012 Feb 15 0500 UTC
Valid To: 2012 Feb 15 0900 UTC
Warning Condition: Persistence
NOAA Scale: G1 - Minor


Space Weather Message Code: ALTK05
Serial Number: 675
Issue Time: 2012 Feb 15 0503 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2012 Feb 15 0503 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor


Space Weather Message Code: ALTK04
Serial Number: 1558
Issue Time: 2012 Feb 15 0417 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2012 Feb 15 0412 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: 1862
Issue Time: 2012 Feb 15 0409 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Feb 15 0410 UTC
Valid To: 2012 Feb 15 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: 1557
Issue Time: 2012 Feb 15 0001 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2012 Feb 14 2358 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: 1861
Issue Time: 2012 Feb 14 2133 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Feb 14 2145 UTC
Valid To: 2012 Feb 15 0300 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: 1860
Issue Time: 2012 Feb 09 1127 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1859
Begin Time: 2012 Feb 08 2115 UTC
Yesterday Maximum 2MeV Flux: 1190 pfu
Potential Impacts: Satellite systems may experience significant
charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 1859
Issue Time: 2012 Feb 08 2132 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2012 Feb 08 2115 UTC
Station: GOES-13
Potential Impacts: Satellite systems may experience significant
charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTK04
Serial Number: 1556
Issue Time: 2012 Feb 07 2101 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2012 Feb 07 2059 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
Potential Impacts: Area of impact primarily poleward of 65 degrees
Geomagnetic Latitude. Weak power grid fluctuations can occur. Aurora
may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK04
Serial Number: 1860
Issue Time: 2012 Feb 07 2033 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Feb 07 2040 UTC
Valid To: 2012 Feb 08 0600 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees
Geomagnetic Latitude. Weak power grid fluctuations can occur. Aurora
may be visible at high latitudes such as Canada and Alaska.