:Product: 0723RSGA.txt :Issued: 2017 Jul 23 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 204 Issued at 2200Z on 23 Jul 2017 IA. Analysis of Solar Active Regions and Activity from 22/2100Z to 23/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 0 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be very low on days one, two, and three (24 Jul, 25 Jul, 26 Jul). IIA. Geophysical Activity Summary 22/2100Z to 23/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 637 km/s at 23/2039Z. Total IMF reached 9 nT at 23/1224Z. The maximum southward component of Bz reached -6 nT at 23/1132Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 5776 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on day one (24 Jul) and quiet levels on days two and three (25 Jul, 26 Jul). III. Event probabilities 24 Jul-26 Jul Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 23 Jul 071 Predicted 24 Jul-26 Jul 070/070/070 90 Day Mean 23 Jul 076 V. Geomagnetic A Indices Observed Afr/Ap 22 Jul 018/015 Estimated Afr/Ap 23 Jul 011/012 Predicted Afr/Ap 24 Jul-26 Jul 009/008-006/005-006/005 VI. Geomagnetic Activity Probabilities 24 Jul-26 Jul A. Middle Latitudes Active 10/10/05 Minor Storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 25/20/20 Major-severe storm 15/15/10