9393 unleashed an M7-class solar flaregreenspun.com : LUSENET : Grassroots Information Coordination Center (GICC) : One Thread
HERE COMES THE SUN: Active region 9393 unleashed an M7-class solar flare on Thursday at 1310 UT and hurled a full-halo coronal mass ejection into space. The CME could trigger geomagnetic activity, including auroras, when it hits Earth's magnetosphere late Saturday or Sunday.
§ X-class flares are the ones to worry about
Proton flux rising
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