Saturday, February 15, 2014

Solar flare passage update

via Solarham.net

Just a quick update regarding the CME passage. A geomagnetic sudden impulse measuring 23 nT was observed at 13:11 UTC. This is the exact moment when magnetometers around the globe observed the passage. The solar wind remains elevated above 400 km/s and the Bz component of the interplanetary magnetic field (IMF) is currently pointed north. A minor increase in geomagnetic activity will be possible during the hours ahead.

Space Weather Message Code: SUMSUD
Serial Number: 186
Issue Time: 2014 Feb 15 1326 UTC
SUMMARY: Geomagnetic Sudden Impulse
Observed: 2014 Feb 15 1311 UTC
Deviation: 23 nT
Station: HAD

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2014 Feb 15 1323 UTC
Valid To: 2014 Feb 16 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.




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