Souce - Space Weather News for Feb. 15, 2011: http://spaceweather.com
MAJOR FLARE: Earth-orbiting satellites have detected the strongest solar flare in more than four years. At 0156 UT on Feb. 15th, giant sunspot 1158 unleashed an X2-class eruption. X-flares are the strongest type of x-ray flare, and this is the first such eruption of new Solar Cycle 24. The explosion that produced the flare also sent a solar tsunami rippling through the sun's atmosphere and, more importantly, hurled a coronal mass ejection toward Earth. This raises the possibility of geomagnetic storms in the days ahead. Visit http://spaceweather.com for images and updates.
SPACE WEATHER ALERTS: Would you like a call when geomagnetic storms erupt in your area? Sign up for http://spaceweatherphone.com (voice) or http://spaceweathertext.com (text) for space weather alerts.