Geomagnetic Storm Warning.
The Kp index after the CME impact is now at 4. A geomagnetic storm warning has been issued by the Space Weather Prediction Center.
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2013 May 24 1813 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.
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2013 May 24 1814 UTC
Valid To: 2013 May 24 2200 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.
SUMMARY: Geomagnetic Sudden Impulse
Observed: 2013 May 24 1812 UTC
Deviation: 18 nT
Station: Boulder
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