[SFDXA] Significant Solar Activity in Progress
Bill Marx
bmarx at bellsouth.net
Thu Aug 4 09:17:40 EDT 2011
> SOLAR ACTIVITY: For the third day in a row, sunspot 1261 has unleashed a significant M-class solar flare. The latest blast at 0357 UT on August 4th registered M9.3 on the Richter Scale of Flares, almost crossing the threshold into X-territory (X-flares are the most powerful kind). Also, at least two coronal mass ejections are en route to Earth, and they could provoke mild to moderate geomagnetic storms when they arrive on August 4th through 6th. High-latitude sky watchers should be alert for auroras.
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