Solar flux 136 and estimated planetary A-index 10. The estimated planetary K-index at 1500 UTC on 01 June was 2.67.

Forecast Issued at 2200Z on 31 May 2026

Solar Activity Forecast: Solar activity is expected to be low with a chance for M-class flares on days one and two (01 Jun, 02 Jun) and expected to be low with a slight chance for an M-class flare on day three (03 Jun).

Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on days one and three (01 Jun, 03 Jun) and quiet to unsettled levels on day two (02 Jun).