:Product: 0821RSGA.txt :Issued: 2007 Aug 21 2203 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 233 Issued at 2200Z on 21 Aug 2007 IA. Analysis of Solar Active Regions and Activity from 20/2100Z to 21/2100Z: Solar activity was very low. Region 969 (S06E73) was designated today as a simple, H-type sunspot group. IB. Solar Activity Forecast: Solar activity is expected to be very low to low. IIA. Geophysical Activity Summary 20/2100Z to 21/2100Z: The geomagnetic field has been quiet. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled 22 - 23 August and to abate to quiet 24 August. III. Event Probabilities 22 Aug-24 Aug Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 21 Aug 069 Predicted 22 Aug-24 Aug 070/070/070 90 Day Mean 21 Aug 071 V. Geomagnetic A Indices Observed Afr/Ap 20 Aug 002/002 Estimated Afr/Ap 21 Aug 003/003 Predicted Afr/Ap 22 Aug-24 Aug 006/010-004/005-002/005 VI. Geomagnetic Activity Probabilities 22 Aug-24 Aug A. Middle Latitudes Active 20/15/15 Minor storm 05/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 25/20/20 Minor storm 10/01/01 Major-severe storm 01/01/01