:Product: 0530RSGA.txt :Issued: 2022 May 30 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 150 Issued at 2200Z on 30 May 2022 IA. Analysis of Solar Active Regions and Activity from 29/2100Z to 30/2100Z: Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C1 event observed at 30/0227Z from Region 3019 (N14W78). There are currently 3 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be very low with a chance for a C-class flares on days one, two, and three (31 May, 01 Jun, 02 Jun). IIA. Geophysical Activity Summary 29/2100Z to 30/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 628 km/s at 30/0221Z. Total IMF reached 6 nT at 30/0814Z. The maximum southward component of Bz reached -4 nT at 30/0017Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 4565 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one, two, and three (31 May, 01 Jun, 02 Jun). III. Event probabilities 31 May-02 Jun Class M 05/05/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 30 May 101 Predicted 31 May-02 Jun 100/100/100 90 Day Mean 30 May 128 V. Geomagnetic A Indices Observed Afr/Ap 29 May 014/015 Estimated Afr/Ap 30 May 008/008 Predicted Afr/Ap 31 May-02 Jun 008/008-009/008-008/008 VI. Geomagnetic Activity Probabilities 31 May-02 Jun A. Middle Latitudes Active 10/10/10 Minor Storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 25/25/25 Major-severe storm 20/20/20