Giant sunspot shoots out intense, X-class solar flare

07-12-2012 • Washington Post

The R3 (Strong) Radio Blackout today at 12:49 EDT was accompanied by an earth-directed CME. Hampered by limited observations of the event, SWPC forecasters are now anticipating the passage of the [coronal mass ejection] around 1:00 a.m. EDT, Saturday

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