Solar flux 196 and estimated planetary A-index 9. The estimated planetary K-index at 1200 UTC on 30 December was 1.67.

Forecast Issued at 2200Z on 29 Dec 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 (30 Dec, 31 Dec, 01 Jan).

Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on day one (30 Dec), quiet to active levels on day two (31 Dec) and unsettled to minor storm levels on day three (01 Jan). Protons have a slight chance of crossing threshold on days one, two, and three (30 Dec, 31 Dec, 01 Jan).