:Product: 0326RSGA.txt :Issued: 2026 Mar 26 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 85 Issued at 2200Z on 26 Mar 2026 IA. Analysis of Solar Active Regions and Activity from 25/2100Z to 26/2100Z: Solar activity has been at moderate 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 days one, two, and three (27 Mar, 28 Mar, 29 Mar). IIA. Geophysical Activity Summary 25/2100Z to 26/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 543 km/s at 25/2138Z. Total IMF reached 5 nT at 26/1328Z. The maximum southward component of Bz reached -5 nT at 26/1403Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 11381 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one and three (27 Mar, 29 Mar) and quiet levels on day two (28 Mar). III. Event probabilities 27 Mar-29 Mar Class M 40/40/40 Class X 05/05/05 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 26 Mar 152 Predicted 27 Mar-29 Mar 157/160/158 90 Day Mean 26 Mar 140 V. Geomagnetic A Indices Observed Afr/Ap 25 Mar 012/017 Estimated Afr/Ap 26 Mar 012/014 Predicted Afr/Ap 27 Mar-29 Mar 008/008-006/005-007/008 VI. Geomagnetic Activity Probabilities 27 Mar-29 Mar A. Middle Latitudes Active 20/10/20 Minor Storm 05/01/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 25/20/25 Major-severe storm 25/20/25