Solar flux 230 and estimated planetary A-index 20. The estimated planetary K-index at 0300 UTC on 21 January was 2.33.

Forecast Issued at 2200Z on 20 Jan 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 (21 Jan, 22 Jan, 23 Jan).

Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on day one (21 Jan) and quiet levels on days two and three (22 Jan, 23 Jan). Protons have a slight chance of crossing threshold on days one, two, and three (21 Jan, 22 Jan, 23 Jan).