Solar activity reaches moderate levels following strong M8.1 flare from Active Region 4513
Solar activity reached moderate levels on August 20, 2026, after Region 4513 produced an M8.1 flare at 11:42 UTC, the strongest of three M-class flares reported during the preceding 24-hour period. The flare was accompanied by Type II radio sweeps with an estimated velocity of 1 201 km/s

