:Product: 0925RSGA.txt :Issued: 2010 Sep 25 2200 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Weather Prediction Center and the U.S. Air Force. # Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 268 Issued at 2200Z on 25 Sep 2010 IA. Analysis of Solar Active Regions and Activity from 24/2100Z to 25/2100Z: Solar activity was very low. Region 1109 (N22E27) was classified as an Ehi group with a Beta-Gamma magnetic configuration and produced a few B-class flares during the period. No new regions were numbered. IB. Solar Activity Forecast: Solar activity is expected to be very low to low. However, there is a slight chance for an M-class flare from Region 1109. IIA. Geophysical Activity Summary 24/2100Z to 25/2100Z: The geomagnetic field was at quiet to unsettled levels as a recurrent coronal hole high-speed stream continued. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet during days one and two (26-27 September). Quiet to unsettled levels are expected on day three (28 September) as a weak, recurrent coronal hole high-speed stream becomes geoeffective. III. Event Probabilities 26 Sep-28 Sep Class M 15/15/15 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 25 Sep 083 Predicted 26 Sep-28 Sep 083/083/082 90 Day Mean 25 Sep 080 V. Geomagnetic A Indices Observed Afr/Ap 24 Sep 009/013 Estimated Afr/Ap 25 Sep 007/010 Predicted Afr/Ap 26 Sep-28 Sep 005/005-005/005-007/007 VI. Geomagnetic Activity Probabilities 26 Sep-28 Sep A. Middle Latitudes Active 05/05/15 Minor storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 05/05/20 Minor storm 01/01/05 Major-severe storm 01/01/01