:Product: 0325RSGA.txt :Issued: 2025 Mar 25 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 84 Issued at 2200Z on 25 Mar 2025 IA. Analysis of Solar Active Regions and Activity from 24/2100Z to 25/2100Z: Solar activity has been at low levels for the past 24 hours. There are currently 4 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be low with a chance for M-class flares on days one, two, and three (26 Mar, 27 Mar, 28 Mar). IIA. Geophysical Activity Summary 24/2100Z to 25/2100Z: The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed reached a peak of 401 km/s at 24/2218Z. Total IMF reached 11 nT at 25/1924Z. The maximum southward component of Bz reached -9 nT at 25/1554Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 235 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at active to minor storm levels on day one (26 Mar), active levels on day two (27 Mar) and unsettled to active levels on day three (28 Mar). III. Event probabilities 26 Mar-28 Mar Class M 30/25/25 Class X 05/05/01 Proton 05/05/01 PCAF green IV. Penticton 10.7 cm Flux Observed 25 Mar 156 Predicted 26 Mar-28 Mar 155/155/160 90 Day Mean 25 Mar 185 V. Geomagnetic A Indices Observed Afr/Ap 24 Mar 018/019 Estimated Afr/Ap 25 Mar 021/030 Predicted Afr/Ap 26 Mar-28 Mar 021/033-018/025-014/018 VI. Geomagnetic Activity Probabilities 26 Mar-28 Mar A. Middle Latitudes Active 35/35/35 Minor Storm 30/20/20 Major-severe storm 15/05/05 B. High Latitudes Active 05/10/10 Minor Storm 20/30/25 Major-severe storm 70/50/50