:Product: 0830RSGA.txt :Issued: 2010 Aug 30 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 242 Issued at 2200Z on 30 Aug 2010 IA. Analysis of Solar Active Regions and Activity from 29/2100Z to 30/2100Z: Solar activity has been at very low levels for the past 24 hours. Region 1102 (N28W26) produced several low level B-class events. Region 1101 (N13W06) remained stable and quiet and Region 1102 has grown in areal coverage and sunspot number. No new regions were numbered today. IB. Solar Activity Forecast: Solar activity is expected to be at very low levels with a slight chance for an isolated C-class events for the next three days (31 August - 02 September). IIA. Geophysical Activity Summary 29/2100Z to 30/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. The greater than 2 MeV electron flux at geosynchronous orbit was at high levels throughout the period. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on day one (31 August) due to a coronal hole high speed stream becoming geoeffective. Mostly quiet levels are expected to return on days two and three (01 September - 02 September). III. Event Probabilities 31 Aug-02 Sep Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 30 Aug 075 Predicted 31 Aug-02 Sep 075/076/076 90 Day Mean 30 Aug 077 V. Geomagnetic A Indices Observed Afr/Ap 29 Aug 002/002 Estimated Afr/Ap 30 Aug 000/005 Predicted Afr/Ap 31 Aug-02 Sep 007/008-005/005-005/005 VI. Geomagnetic Activity Probabilities 31 Aug-02 Sep A. Middle Latitudes Active 15/10/05 Minor storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 20/15/05 Minor storm 01/01/01 Major-severe storm 01/01/01