Solar flux 105 and estimated planetary A-index 23. The estimated planetary K-index at 1200 UTC on 20 April was 3.67.

Forecast Issued at 2200Z on 19 Apr 2026

Solar Activity Forecast: Solar activity is expected to be very low with a chance for a C-class flares on days one, two, and three (20 Apr, 21 Apr, 22 Apr).

Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on days one and two (20 Apr, 21 Apr) and quiet to unsettled levels on day three (22 Apr).