:Product: 0508RSGA.txt :Issued: 2026 May 08 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 128 Issued at 2200Z on 08 May 2026 IA. Analysis of Solar Active Regions and Activity from 07/2100Z to 08/2100Z: Solar activity has been at low levels for the past 24 hours. There are currently 5 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be low with a chance for M-class flares and a slight chance for an X-class flare on days one, two, and three (09 May, 10 May, 11 May). IIA. Geophysical Activity Summary 07/2100Z to 08/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 606 km/s at 08/1133Z. Total IMF reached 19 nT at 08/0146Z. The maximum southward component of Bz reached -12 nT at 08/0749Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 452 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one, two, and three (09 May, 10 May, 11 May). III. Event probabilities 09 May-11 May Class M 45/45/45 Class X 10/10/10 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 08 May 120 Predicted 09 May-11 May 125/125/120 90 Day Mean 08 May 126 V. Geomagnetic A Indices Observed Afr/Ap 07 May 006/007 Estimated Afr/Ap 08 May 011/014 Predicted Afr/Ap 09 May-11 May 009/010-006/006-009/008 VI. Geomagnetic Activity Probabilities 09 May-11 May A. Middle Latitudes Active 20/20/20 Minor Storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 20/15/20 Minor Storm 30/30/30 Major-severe storm 25/30/25