:Product: 0611RSGA.txt :Issued: 2025 Jun 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 162 Issued at 2200Z on 11 Jun 2025 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 9 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 (12 Jun, 13 Jun, 14 Jun). 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 495 km/s at 11/1741Z. Total IMF reached 11 nT at 11/1623Z. The maximum southward component of Bz reached -10 nT at 11/1611Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 848 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on day one (12 Jun), quiet to active levels on day two (13 Jun) and unsettled to major storm levels on day three (14 Jun). III. Event probabilities 12 Jun-14 Jun Class M 40/40/40 Class X 05/05/05 Proton 05/05/05 PCAF green IV. Penticton 10.7 cm Flux Observed 11 Jun 141 Predicted 12 Jun-14 Jun 120/120/120 90 Day Mean 11 Jun 151 V. Geomagnetic A Indices Observed Afr/Ap 10 Jun 011/ NA Estimated Afr/Ap 11 Jun 011/014 Predicted Afr/Ap 12 Jun-14 Jun 008/008-011/015-024/032 VI. Geomagnetic Activity Probabilities 12 Jun-14 Jun A. Middle Latitudes Active 15/40/30 Minor Storm 05/20/40 Major-severe storm 01/05/25 B. High Latitudes Active 15/10/05 Minor Storm 25/30/20 Major-severe storm 25/55/75