:Product: 0720RSGA.txt :Issued: 2007 Jul 20 2202 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Environment Center and the U.S. Air Force. # Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 201 Issued at 2200Z on 20 Jul 2007 IA. Analysis of Solar Active Regions and Activity from 19/2100Z to 20/2100Z: Solar activity has been very low. Region 963 has rotated off of the visible disk. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 19/2100Z to 20/2100Z: The geomagnetic field ranged from unsettled to active conditions. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be unsettled for 21 July due to a recurrent coronal hole. There is the possibility of isolated active periods. Conditions are expected to return to quiet for 22 - 23 July. III. Event Probabilities 21 Jul-23 Jul Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 20 Jul 067 Predicted 21 Jul-23 Jul 068/068/068 90 Day Mean 20 Jul 074 V. Geomagnetic A Indices Observed Afr/Ap 19 Jul 003/003 Estimated Afr/Ap 20 Jul 012/015 Predicted Afr/Ap 21 Jul-23 Jul 010/015-005/010-005/005 VI. Geomagnetic Activity Probabilities 21 Jul-23 Jul A. Middle Latitudes Active 25/10/10 Minor storm 10/05/05 Major-severe storm 05/01/01 B. High Latitudes Active 30/15/15 Minor storm 15/10/10 Major-severe storm 10/05/01