:Product: 0730RSGA.txt :Issued: 2025 Jul 30 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 211 Issued at 2200Z on 30 Jul 2025 IA. Analysis of Solar Active Regions and Activity from 29/2100Z to 30/2100Z: Solar activity has been at low levels for the past 24 hours. There are currently 9 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 (31 Jul, 01 Aug, 02 Aug). IIA. Geophysical Activity Summary 29/2100Z to 30/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 866 km/s at 30/0729Z. Total IMF reached 12 nT at 30/1109Z. The maximum southward component of Bz reached -9 nT at 30/1308Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 821 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on day one (31 Jul), quiet to unsettled levels on day two (01 Aug) and quiet levels on day three (02 Aug). III. Event probabilities 31 Jul-02 Aug Class M 30/30/30 Class X 05/05/05 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 30 Jul 149 Predicted 31 Jul-02 Aug 148/146/146 90 Day Mean 30 Jul 135 V. Geomagnetic A Indices Observed Afr/Ap 29 Jul 009/ 008 Estimated Afr/Ap 30 Jul 008/012 Predicted Afr/Ap 31 Jul-02 Aug 012/014-008/008-006/008 VI. Geomagnetic Activity Probabilities 31 Jul-02 Aug A. Middle Latitudes Active 35/15/10 Minor Storm 10/05/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 25/25/20 Major-severe storm 45/25/20