:Product: 0311RSGA.txt :Issued: 2026 Mar 11 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 70 Issued at 2200Z on 11 Mar 2026 IA. Analysis of Solar Active Regions and Activity from 10/2100Z to 11/2100Z: 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 slight chance for an M-class flare on days one, two, and three (12 Mar, 13 Mar, 14 Mar). IIA. Geophysical Activity Summary 10/2100Z to 11/2100Z: The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed reached a peak of 572 km/s at 11/0246Z. Total IMF reached 6 nT at 11/0033Z. The maximum southward component of Bz reached -5 nT at 11/0200Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 2076 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on day one (12 Mar) and quiet to minor storm levels on days two and three (13 Mar, 14 Mar). III. Event probabilities 12 Mar-14 Mar Class M 20/20/20 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 11 Mar 124 Predicted 12 Mar-14 Mar 120/116/112 90 Day Mean 11 Mar 142 V. Geomagnetic A Indices Observed Afr/Ap 10 Mar 011/014 Estimated Afr/Ap 11 Mar 008/009 Predicted Afr/Ap 12 Mar-14 Mar 008/008-015/020-017/020 VI. Geomagnetic Activity Probabilities 12 Mar-14 Mar A. Middle Latitudes Active 15/45/45 Minor Storm 01/25/25 Major-severe storm 01/05/05 B. High Latitudes Active 15/05/05 Minor Storm 25/20/20 Major-severe storm 20/65/65