Wednesday, August 3, 2011

SOLAR ALERT: M6-class solar flare due to reach earth Aug. 6

Sunspot 1261 unleashed another strong solar flare this morning--an M6-class flash at 1348 UT. Like yesterday's eruption from the same active region, this explosion propelled a CME in the general direction of Earth. ETA: August 6th. The CME left the sun traveling 900 km/s and should reach Earth (denoted by a yellow dot in the simulation) on August 5th at 0300 UT plus or minus 7 hours. Another cloud produced by today's M-flare may be right behind it; stay tuned for movies of that one, too. Mild to moderate geomagnetic storms are possible when these CMEs arrive on August 5th and 6th.


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