:Product: 0324RSGA.txt :Issued: 2025 Mar 24 2220 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 83 Issued at 2200Z on 24 Mar 2025 IA. Analysis of Solar Active Regions and Activity from 23/2100Z to 24/2100Z: Solar activity has been at low levels for the past 24 hours. There are currently 6 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 (25 Mar, 26 Mar, 27 Mar). IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z: The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed reached a peak of 439 km/s at 24/0657Z. Total IMF reached 16 nT at 24/0114Z. The maximum southward component of Bz reached -9 nT at 24/0121Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 351 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at unsettled to major storm levels on day one (25 Mar), unsettled to minor storm levels on day two (26 Mar) and quiet to active levels on day three (27 Mar). III. Event probabilities 25 Mar-27 Mar Class M 30/30/30 Class X 05/05/05 Proton 05/05/05 PCAF green IV. Penticton 10.7 cm Flux Observed 24 Mar 156 Predicted 25 Mar-27 Mar 162/165/160 90 Day Mean 24 Mar 186 V. Geomagnetic A Indices Observed Afr/Ap 23 Mar 009/012 Estimated Afr/Ap 24 Mar 017/023 Predicted Afr/Ap 25 Mar-27 Mar 022/030-015/020-012/015 VI. Geomagnetic Activity Probabilities 25 Mar-27 Mar A. Middle Latitudes Active 25/35/35 Minor Storm 35/30/20 Major-severe storm 25/15/05 B. High Latitudes Active 05/05/10 Minor Storm 15/20/30 Major-severe storm 75/70/50