:Product: 0613RSGA.txt :Issued: 2024 Jun 13 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 165 Issued at 2200Z on 13 Jun 2024 IA. Analysis of Solar Active Regions and Activity from 12/2100Z to 13/2100Z: Solar activity has been at moderate levels for the past 24 hours. The largest solar event of the period was a M3 event observed at 13/1645Z from Region 3713 (S13E54). There are currently 8 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 (14 Jun, 15 Jun, 16 Jun). IIA. Geophysical Activity Summary 12/2100Z to 13/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 364 km/s at 12/2322Z. Protons greater than 10 MeV at geosynchronous orbit reached a peak level of 8 pfu at 13/0615Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 106 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on day one (14 Jun) and quiet to active levels on days two and three (15 Jun, 16 Jun). Protons greater than 10 Mev have a slight chance of crossing threshold on day one (14 Jun). III. Event probabilities 14 Jun-16 Jun Class M 35/35/35 Class X 05/05/05 Proton 10/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 13 Jun 170 Predicted 14 Jun-16 Jun 170/175/175 90 Day Mean 13 Jun 176 V. Geomagnetic A Indices Observed Afr/Ap 12 Jun 006/006 Estimated Afr/Ap 13 Jun 004/005 Predicted Afr/Ap 14 Jun-16 Jun 006/005-010/012-013/015 VI. Geomagnetic Activity Probabilities 14 Jun-16 Jun A. Middle Latitudes Active 10/35/35 Minor Storm 01/20/20 Major-severe storm 01/05/05 B. High Latitudes Active 15/10/10 Minor Storm 20/30/30 Major-severe storm 20/50/50