:Product: 0729RSGA.txt :Issued: 2025 Jul 29 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 210 Issued at 2200Z on 29 Jul 2025 IA. Analysis of Solar Active Regions and Activity from 28/2100Z to 29/2100Z: Solar activity has been at low levels for the past 24 hours. 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 (30 Jul, 31 Jul, 01 Aug). IIA. Geophysical Activity Summary 28/2100Z to 29/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 487 km/s at 29/0709Z. Total IMF reached 7 nT at 29/1816Z. The maximum southward component of Bz reached -5 nT at 29/0322Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 835 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on days one and two (30 Jul, 31 Jul) and quiet to unsettled levels on day three (01 Aug). III. Event probabilities 30 Jul-01 Aug Class M 30/30/30 Class X 05/05/05 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 29 Jul 152 Predicted 30 Jul-01 Aug 145/140/140 90 Day Mean 29 Jul 135 V. Geomagnetic A Indices Observed Afr/Ap 28 Jul 008/ 007 Estimated Afr/Ap 29 Jul 006/009 Predicted Afr/Ap 30 Jul-01 Aug 009/012-010/012-008/008 VI. Geomagnetic Activity Probabilities 30 Jul-01 Aug A. Middle Latitudes Active 30/30/15 Minor Storm 15/10/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 30/30/25 Major-severe storm 40/40/25