Solar flux 130 and estimated planetary A-index 50. The estimated planetary K-index at 2100 UTC on 15 September wa

Forecast Issued at 2200Z on 15 Sep 2025

Solar Activity Forecast: Solar activity is expected to be low with a chance for M-class flares on days one, two, and three (16 Sep, 17 Sep, 18 Sep).

Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to minor storm levels on day one (16 Sep), quiet to active levels on day two (17 Sep) and quiet to unsettled levels on day three (18 Sep).