:Product: 0929RSGA.txt :Issued: 2009 Sep 29 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 272 Issued at 2200Z on 29 Sep 2009 IA. Analysis of Solar Active Regions and Activity from 28/2100Z to 29/2100Z: Solar activity was very low. Region 1027 (N23W62) indicated a slight decrease in area and spot number and maintains a bipolar magnetic configuration. No significant flares were observed during the past 24 hours. IB. Solar Activity Forecast: Solar activity is expected to be very low with a slight chance for a C-class event. IIA. Geophysical Activity Summary 28/2100Z to 29/2100Z: The geomagnetic field was quiet. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet on day one (30 September). Quiet to unsettled levels are expected on days two and three (01-02 October) due to a coronal hole high speed stream. III. Event Probabilities 30 Sep-02 Oct Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 29 Sep 072 Predicted 30 Sep-02 Oct 072/072/070 90 Day Mean 29 Sep 069 V. Geomagnetic A Indices Observed Afr/Ap 28 Sep 006/008 Estimated Afr/Ap 29 Sep 002/005 Predicted Afr/Ap 30 Sep-02 Oct 005/005-007/007-007/007 VI. Geomagnetic Activity Probabilities 30 Sep-02 Oct A. Middle Latitudes Active 05/10/10 Minor storm 01/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 05/15/15 Minor storm 01/05/05 Major-severe storm 01/01/01