Solar flux 111 and estimated planetary A-index 10. The estimated planetary K-index at 0000 UTC on 17 March was 1.33. Space weather for the past 24 hours has been minor. Radio blackouts reaching the R1 level occurred.

Forecast Issued at 2200Z on 16 Mar 2026

Solar Activity Forecast: Solar activity is expected to be low with a chance for M-class flares on days one and two (17 Mar, 18 Mar) and expected to be low with a slight chance for an M-class flare on day three (19 Mar).

Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one and two (17 Mar, 18 Mar) and quiet to major storm levels on day three (19 Mar). Protons greater than 10 Mev have a slight chance of crossing threshold on day three (19 Mar).