:Product: 1028RSGA.txt :Issued: 2025 Oct 28 2200 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Weather Prediction Center and the U.S. Air Force. # Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 301 Issued at 2200Z on 28 Oct 2025 IA. Analysis of Solar Active Regions and Activity from 27/2100Z to 28/2100Z: Solar activity has been at low levels for the past 24 hours. There are currently 7 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is likely to be low on days one, two, and three (29 Oct, 30 Oct, 31 Oct). IIA. Geophysical Activity Summary 27/2100Z to 28/2100Z: The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed reached a peak of 474 km/s at 28/1900Z. Total IMF reached 12 nT at 28/1810Z. The maximum southward component of Bz reached -10 nT at 28/2046Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 516 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at unsettled to minor storm levels on days one and two (29 Oct, 30 Oct) and unsettled to active levels on day three (31 Oct). III. Event probabilities 29 Oct-31 Oct Class M 05/05/05 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 28 Oct 122 Predicted 29 Oct-31 Oct 120/125/130 90 Day Mean 28 Oct 152 V. Geomagnetic A Indices Observed Afr/Ap 27 Oct 004/006 Estimated Afr/Ap 28 Oct 016/020 Predicted Afr/Ap 29 Oct-31 Oct 021/030-020/025-014/018 VI. Geomagnetic Activity Probabilities 29 Oct-31 Oct A. Middle Latitudes Active 40/40/35 Minor Storm 30/20/15 Major-severe storm 15/05/01 B. High Latitudes Active 05/10/15 Minor Storm 25/25/30 Major-severe storm 70/60/45