G2 Storm Conditions Possible on March 11

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Norther Lights Now – The official forecast from the Space Weather Prediction Center (SWPC) is calling for a couple periods of G1 and G2 aurora late on March 11, 2013:

Brief Period of G2 storming predicted for the  second half of March 11
Brief Period of G2 storming predicted for the second half of March 11

This is due to a small solar storm with a period of dimming combined with high speed solar wind eminating from a coronal hole. This is something of a suprise storm. The CME is narrow and the coronal hole is small so this is a low confidence forecast. As such, SWPC has not even issued a geomagnetic storm watch for today.

Coronal hole in the southern hemisphere, center disk will make for high speed solar wind on 3/11
Coronal hole in the southern hemisphere, center disk will make for high speed solar wind on 3/11

Further, it’s possible that the expected solar storm has already passed Earth. There was a brief period of G1 storming mid-day on March 11. This may have been the expected activity. Space Weather forecasters are still analyzing this storm.

There was a period of G1 storming in the first half of March 11
There was a period of G1 storming in the first half of March 11

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