Radio Blackout R1 ALERT

M-class Flare (M1.0) August 7, 2010

An M-class flare erupted in Active Sunspot Region 11093, peaking at 1824 UTC on August 7, 2010. This caused an R1-class radio blackout (a sudden ionospheric disturbance, or SID). Below is a movie showing a series of filtered views of the event in the active sunspot region 11093, as seen by SDO AIA. This flare is 10 times more powerful than the C-class flare on August 1, 2010 - the flare that caused so much media attention on August 3 through August 5, due to aurora and anticipation. The order of views by filter: 171 Angstroms; 094 Angstroms; 131 Angstroms; 193 Angstroms; 211 Angstroms; 304 Angstroms. Source: NASA/SDO