Solar flux 106 and estimated planetary A-index 33. The estimated planetary K-index at 0900 UTC on 19 April was 5.67.

Forecast Issued at 2200Z on 18 Apr 2026

Solar Activity Forecast: Solar activity is likely to be low with a slight chance for an M-class flare on days one, two, and three (19 Apr, 20 Apr, 21 Apr).

Geophysical Activity Forecast: The geomagnetic field is expected to be at unsettled to minor storm levels on day one (19 Apr) and quiet to active levels on days two and three (20 Apr, 21 Apr).