:Product: 0402RSGA.txt :Issued: 2026 Apr 02 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 92 Issued at 2200Z on 02 Apr 2026 IA. Analysis of Solar Active Regions and Activity from 01/2100Z to 02/2100Z: Solar activity reached moderate levels over the past 24 hours. There are currently 10 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is likely to be moderate with a slight chance for an X-class flare on days one, two, and three (03 Apr, 04 Apr, 05 Apr). IIA. Geophysical Activity Summary 01/2100Z to 02/2100Z: The geomagnetic field has been at quiet to major storm levels for the past 24 hours. Solar wind speed reached a peak of 730 km/s at 02/1947Z. Total IMF reached 17 nT at 02/0729Z. The maximum southward component of Bz reached -15 nT at 02/0635Z. Protons greater than 10 MeV at geosynchronous orbit reached a peak level of 3 pfu at 02/2035Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 543 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to major storm levels on day one (03 Apr), unsettled to major storm levels on day two (04 Apr) and quiet to active levels on day three (05 Apr). Protons have a chance of crossing threshold on days one and two (03 Apr, 04 Apr) and have a chance of crossing threshold on day three (05 Apr). III. Event probabilities 03 Apr-05 Apr Class M 55/55/55 Class X 20/20/20 Proton 50/50/25 PCAF green IV. Penticton 10.7 cm Flux Observed 02 Apr 140 Predicted 03 Apr-05 Apr 140/135/140 90 Day Mean 02 Apr 138 V. Geomagnetic A Indices Observed Afr/Ap 01 Apr 008/009 Estimated Afr/Ap 02 Apr 031/048 Predicted Afr/Ap 03 Apr-05 Apr 027/037-029/041-014/016 VI. Geomagnetic Activity Probabilities 03 Apr-05 Apr A. Middle Latitudes Active 25/30/30 Minor Storm 40/45/10 Major-severe storm 30/25/01 B. High Latitudes Active 05/05/15 Minor Storm 15/15/30 Major-severe storm 85/85/40