Source - Space Weather News for Sept. 26, 2011: http://spaceweather.com
GEOMAGNETIC STORM: A strong geomagnetic storm is in progress following the impact of a coronal mass ejection (CME) today, Sept. 26th, at approximately 12:15 UT. Analysts at the Goddard Space Weather Lab report a "strong compression of Earth's magnetosphere" and the possibility that satellites in geosynchronous orbit have been exposed to solar wind plasma and magnetic fields. Mid- to high-latitude sky watchers should be alert for auroras after nightfall. Observing tip: The hours around local midnight are usually best for spotting Northern and Southern Lights. 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).