Solar flux 226 and estimated planetary A-index 8. The estimated planetary K-index at 1800 UTC on 28 Aug

Forecast Issued at 2200Z on 27 Aug 2025

Solar Activity Forecast: Solar activity is likely to be moderate with a slight chance for an X-class flare on days one, two, and three (28 Aug, 29 Aug, 30 Aug).

Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one and two (28 Aug, 29 Aug) and quiet levels on day three (30 Aug). Protons have a chance of crossing threshold on day one (28 Aug) and have a slight chance of crossing threshold on days two and three (29 Aug, 30 Aug).