Space Weather Prediction Center

National Oceanic and Atmospheric Administration

M4 Flare (R1-Minor) Event on 20 February, 2023

R1 Event 20 Feb, 2023
M4 Flare (R1-Minor) Event on 20 February, 2023
published: Wednesday, March 1, 2023 03:50 UTC UTC

An M4.4 flare (R1-Minor HF Radio Blackout) occurred on 20 February, 2023, at 9:58 am EST (1458 UTC). The source was new NOAA/SWPC Region 3234, which rotated into view early today and has produced occasional optical subflares, as well as today's M4 flare. Continue to visit our webpage for the latest information, forecasts, and updates.