Source - Space Weather News for Jan. 24, 2012: http://spaceweather.com
CME IMPACT: As predicted by analysts at the Goddard Space Weather Lab, a CME hit Earth's magnetic field on Jan. 24 at ~1500 UT (10 am EST). A geomagnetic storm is brewing in the aftermath of the impact, but as this alert is being written it is too soon to say how weak or strong the storm might be. High-latitude sky watchers should be alert for auroras after local nightfall; the hours around local midnight are often best for seeing the Northern Lights. Chances for a good display favor observers in northern Europe, Greenland, Iceland, Canada, Alaska, and possibly northern tier US states such as Maine, Wisconsin and Minnesota. Check http://spaceweather.com for updates.
SPACE WEATHER ALERTS: 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).