:Product: 0728RSGA.txt :Issued: 2019 Jul 28 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 209 Issued at 2200Z on 28 Jul 2019 IA. Analysis of Solar Active Regions and Activity from 27/2100Z to 28/2100Z: 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 (29 Jul, 30 Jul, 31 Jul). IIA. Geophysical Activity Summary 27/2100Z to 28/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 377 km/s at 28/0438Z. Total IMF reached 7 nT at 27/2312Z. The maximum southward component of Bz reached -5 nT at 28/0008Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one and two (29 Jul, 30 Jul) and quiet to unsettled levels on day three (31 Jul). III. Event probabilities 29 Jul-31 Jul Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 28 Jul 067 Predicted 29 Jul-31 Jul 067/067/067 90 Day Mean 28 Jul 069 V. Geomagnetic A Indices Observed Afr/Ap 27 Jul 004/004 Estimated Afr/Ap 28 Jul 005/005 Predicted Afr/Ap 29 Jul-31 Jul 006/005-005/005-008/008 VI. Geomagnetic Activity Probabilities 29 Jul-31 Jul A. Middle Latitudes Active 10/10/15 Minor Storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 20/20/20 Major-severe storm 15/15/15