:Product: 0322RSGA.txt :Issued: 2026 Mar 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 81 Issued at 2200Z on 22 Mar 2026 IA. Analysis of Solar Active Regions and Activity from 21/2100Z to 22/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 7 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 day one (23 Mar) and likely to be low with a slight chance for an M-class flare on days two and three (24 Mar, 25 Mar). IIA. Geophysical Activity Summary 21/2100Z to 22/2100Z: The geomagnetic field has been at unsettled to severe storm levels for the past 24 hours. Solar wind speed reached a peak of 716 km/s at 22/2027Z. Total IMF reached 14 nT at 22/0849Z. The maximum southward component of Bz reached -11 nT at 22/1432Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 1309 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at unsettled to major storm levels on day one (23 Mar), quiet to active levels on day two (24 Mar) and quiet to unsettled levels on day three (25 Mar). III. Event probabilities 23 Mar-25 Mar Class M 25/20/20 Class X 05/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 22 Mar 120 Predicted 23 Mar-25 Mar 120/120/122 90 Day Mean 22 Mar 141 V. Geomagnetic A Indices Observed Afr/Ap 21 Mar 027/044 Estimated Afr/Ap 22 Mar 040/077 Predicted Afr/Ap 23 Mar-25 Mar 024/034-013/014-011/012 VI. Geomagnetic Activity Probabilities 23 Mar-25 Mar A. Middle Latitudes Active 30/35/35 Minor Storm 35/15/15 Major-severe storm 25/01/01 B. High Latitudes Active 05/10/10 Minor Storm 20/25/25 Major-severe storm 75/50/50