:Product: 0825RSGA.txt :Issued: 2007 Aug 25 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 237 Issued at 2200Z on 25 Aug 2007 IA. Analysis of Solar Active Regions and Activity from 24/2100Z to 25/2100Z: Solar activity was very low. IB. Solar Activity Forecast: Solar activity is expected to be very low to low. Region 969 (S05E22) could produce an isolated C-class event. IIA. Geophysical Activity Summary 24/2100Z to 25/2100Z: The geomagnetic field was at quiet to unsettled levels. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled, with isolated periods of active conditions. The increase in activity levels is expected due to a favorably positioned coronal hole. III. Event Probabilities 26 Aug-28 Aug Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 25 Aug 072 Predicted 26 Aug-28 Aug 070/070/070 90 Day Mean 25 Aug 072 V. Geomagnetic A Indices Observed Afr/Ap 24 Aug 001/002 Estimated Afr/Ap 25 Aug 008/012 Predicted Afr/Ap 26 Aug-28 Aug 010/015-008/012-008/008 VI. Geomagnetic Activity Probabilities 26 Aug-28 Aug A. Middle Latitudes Active 20/15/15 Minor storm 10/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 25/20/20 Minor storm 15/10/10 Major-severe storm 05/05/01