Source - Space Weather News for July 7, 2012: http://spaceweather.com
X-FLARE: For days, giant sunspot AR1515 has looked capable of producing a
really strong explosion. On July 6th it finally did. Yesterday, the
sunspot's magnetic canopy erupted, producing a brief but potent
X1.1-class solar flare. The explosion hurled a CME into space and
sparked a solar proton storm around Earth. Check http://spaceweather.com for images and updates.
X-FLARE ALERTS: Would you like a call when solar flares are underway? X-flare alerts are available from http://spaceweathertext.com (text) and http://spaceweatherphone.com (voice).