The largest region of the current solar cycle erupted with a major solar flare reaching X3.1 on October 24, 2014 at 21:41 UTC. The event started at 21:07 and ended at 22:13 UTC.
SDO's AIA 304 and AIA combined (094, 334, 195) view of X3.1 solar flare at 21:56 UTC on October 24. 2014. (Courtesy of NASA/SDO and the AIA, EVE, and HMI science teams.)
Radio Blackout treshold reached R3 (Strong) level that can cause wide area blackout of HF radio communication, loss of radio contact for about an hour on sunlit side of Earth and low-frequency navigation signals degraded for about an hour. The main communications impacts from this event are over the Pacific Ocean.
