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:
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.
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.