:Product: 0610RSGA.txt :Issued: 2026 Jun 10 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 161 Issued at 2200Z on 10 Jun 2026 IA. Analysis of Solar Active Regions and Activity from 09/2100Z to 10/2100Z: Solar activity has been at 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 and a slight chance for an X-class flare on days one, two, and three (11 Jun, 12 Jun, 13 Jun). IIA. Geophysical Activity Summary 09/2100Z to 10/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 482 km/s at 09/2102Z. Total IMF reached 8 nT at 10/1802Z. The maximum southward component of Bz reached -5 nT at 10/1036Z. Electrons greater than 2 MeV at geosynchronous orbit remained below threshold of 1,000 pfu during the period. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one and three (11 Jun, 13 Jun) and quiet to active levels on day two (12 Jun). III. Event probabilities 11 Jun-13 Jun Class M 40/40/40 Class X 10/10/10 Proton 05/05/05 PCAF green IV. Penticton 10.7 cm Flux Observed 10 Jun 124 Predicted 11 Jun-13 Jun 130/128/128 90 Day Mean 10 Jun 125 V. Geomagnetic A Indices Observed Afr/Ap 09 Jun 010/011 Estimated Afr/Ap 10 Jun 007/008 Predicted Afr/Ap 11 Jun-13 Jun 010/012-013/015-010/012 VI. Geomagnetic Activity Probabilities 11 Jun-13 Jun A. Middle Latitudes Active 30/35/30 Minor Storm 05/10/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 30/30/35 Major-severe storm 35/45/35