:Product: 0605RSGA.txt :Issued: 2020 Jun 05 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 157 Issued at 2200Z on 05 Jun 2020 IA. Analysis of Solar Active Regions and Activity from 04/2100Z to 05/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 1 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be very low with a slight chance for a C-class flare on days one, two, and three (06 Jun, 07 Jun, 08 Jun). IIA. Geophysical Activity Summary 04/2100Z to 05/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 356 km/s at 04/2236Z. Total IMF reached 5 nT at 05/1409Z. The maximum southward component of Bz reached -3 nT at 05/0835Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 172 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one and two (06 Jun, 07 Jun) and quiet levels on day three (08 Jun). III. Event probabilities 06 Jun-08 Jun Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 05 Jun 071 Predicted 06 Jun-08 Jun 072/072/072 90 Day Mean 05 Jun 070 V. Geomagnetic A Indices Observed Afr/Ap 04 Jun 005/004 Estimated Afr/Ap 05 Jun 005/005 Predicted Afr/Ap 06 Jun-08 Jun 007/008-008/008-006/005 VI. Geomagnetic Activity Probabilities 06 Jun-08 Jun A. Middle Latitudes Active 10/10/05 Minor Storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 20/15/15 Minor Storm 25/25/20 Major-severe storm 15/10/10