:Product: 0823RSGA.txt :Issued: 2007 Aug 23 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 235 Issued at 2200Z on 23 Aug 2007 IA. Analysis of Solar Active Regions and Activity from 22/2100Z to 23/2100Z: Solar activity was very low. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 22/2100Z to 23/2100Z: The geomagnetic field was quiet. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be predominately quiet for 24 August. Quiet to unsettled conditions, with isolated active periods, are expected on 25-26 August in response to a recurrent coronal hole. III. Event Probabilities 24 Aug-26 Aug Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 23 Aug 071 Predicted 24 Aug-26 Aug 070/070/070 90 Day Mean 23 Aug 071 V. Geomagnetic A Indices Observed Afr/Ap 22 Aug 002/004 Estimated Afr/Ap 23 Aug 002/003 Predicted Afr/Ap 24 Aug-26 Aug 005/008-010/015-010/015 VI. Geomagnetic Activity Probabilities 24 Aug-26 Aug A. Middle Latitudes Active 10/20/20 Minor storm 05/10/10 Major-severe storm 01/01/01 B. High Latitudes Active 15/25/25 Minor storm 05/15/15 Major-severe storm 01/05/05