:Product: 0304RSGA.txt :Issued: 2025 Mar 04 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 63 Issued at 2200Z on 04 Mar 2025 IA. Analysis of Solar Active Regions and Activity from 03/2100Z to 04/2100Z: Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C4 event observed at 04/1545Z from Region 4012 (S13E33). There are currently 8 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 (05 Mar, 06 Mar, 07 Mar). IIA. Geophysical Activity Summary 03/2100Z to 04/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 558 km/s at 04/0525Z. Total IMF reached 8 nT at 04/0449Z. The maximum southward component of Bz reached -8 nT at 04/2037Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 1125 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to minor storm levels on day one (05 Mar), quiet to unsettled levels on day two (06 Mar) and quiet levels on day three (07 Mar). III. Event probabilities 05 Mar-07 Mar Class M 40/40/40 Class X 05/05/05 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 04 Mar 160 Predicted 05 Mar-07 Mar 165/170/170 90 Day Mean 04 Mar 189 V. Geomagnetic A Indices Observed Afr/Ap 03 Mar 005/004 Estimated Afr/Ap 04 Mar 012/016 Predicted Afr/Ap 05 Mar-07 Mar 019/025-008/010-005/005 VI. Geomagnetic Activity Probabilities 05 Mar-07 Mar A. Middle Latitudes Active 35/20/15 Minor Storm 30/05/05 Major-severe storm 10/01/01 B. High Latitudes Active 10/15/15 Minor Storm 25/30/20 Major-severe storm 65/30/20