:Product: 0422RSGA.txt :Issued: 2026 Apr 22 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 112 Issued at 2200Z on 22 Apr 2026 IA. Analysis of Solar Active Regions and Activity from 21/2100Z to 22/2100Z: Solar activity has been at low levels for the past 24 hours. There are currently 4 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be low with a slight chance for an M-class flare on days one, two, and three (23 Apr, 24 Apr, 25 Apr). IIA. Geophysical Activity Summary 21/2100Z to 22/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 556 km/s at 22/0331Z. Total IMF reached 5 nT at 22/2057Z. The maximum southward component of Bz reached -5 nT at 22/0821Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 4922 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one, two, and three (23 Apr, 24 Apr, 25 Apr). III. Event probabilities 23 Apr-25 Apr Class M 10/10/10 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 22 Apr 116 Predicted 23 Apr-25 Apr 120/120/110 90 Day Mean 22 Apr 130 V. Geomagnetic A Indices Observed Afr/Ap 21 Apr 014/019 Estimated Afr/Ap 22 Apr 006/005 Predicted Afr/Ap 23 Apr-25 Apr 008/008-009/008-008/008 VI. Geomagnetic Activity Probabilities 23 Apr-25 Apr A. Middle Latitudes Active 20/20/20 Minor Storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 25/25/25 Major-severe storm 25/25/25