Source - Space Weather News for Sept. 7, 2011: http://spaceweather.com
STRONG SOLAR ACTIVITY: On Sept. 6th, active sunspot 1283 produced two major eruptions including an impulsive X2-class solar flare. The blasts hurled a pair of coronal mass ejections (CMEs) toward Earth, which could spark geomagnetic activity when they arrive on Sept. 8-10.
High-latitude sky watchers should be alert for auroras in the nights ahead. Check http://spaceweather.com for images and updates.
DON'T MISS THE STORM: Would you like a call when geomagnetic storms are in progress? Storm alerts are available from http://spaceweathertext.com (text) and http://spaceweatherphone.com (voice).