Solar flux 121 and estimated planetary A-index 2. The estimated planetary K-index at 0300 UTC on 20 Octobe

Forecast Issued at 2200Z on 19 Oct 2026

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

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