:Product: 0826RSGA.txt :Issued: 2007 Aug 26 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 238 Issued at 2200Z on 26 Aug 2007 IA. Analysis of Solar Active Regions and Activity from 25/2100Z to 26/2100Z: Solar activity was very low. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 25/2100Z to 26/2100Z: The geomagnetic field was quiet to unsettled. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled with isolated active periods on 27 August due to a coronal hole high speed stream. Expect quiet to unsettled conditions on 28 - 29 August. III. Event Probabilities 27 Aug-29 Aug Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 26 Aug 070 Predicted 27 Aug-29 Aug 070/070/070 90 Day Mean 26 Aug 072 V. Geomagnetic A Indices Observed Afr/Ap 25 Aug 006/008 Estimated Afr/Ap 26 Aug 008/012 Predicted Afr/Ap 27 Aug-29 Aug 008/015-008/008-005/005 VI. Geomagnetic Activity Probabilities 27 Aug-29 Aug A. Middle Latitudes Active 15/15/10 Minor storm 05/05/01 Major-severe storm 01/01/01 B. High Latitudes Active 25/20/15 Minor storm 15/10/05 Major-severe storm 05/01/01