:Product: 1018RSGA.txt :Issued: 2008 Oct 18 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 292 Issued at 2200Z on 18 Oct 2008 IA. Analysis of Solar Active Regions and Activity from 17/2100Z to 18/2100Z: Solar activity was very low. An A9 X-ray flare occurred at 18/1200Z with no obvious optical flare association. The visible disk was spotless. Region 1006 (N26W91) rotated out of view during the period. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 17/2100Z to 18/2100Z: Geomagnetic activity was at quiet levels at all latitudes. The greater than 2 MeV electron flux at geosynchronous orbit was high. IIB. Geophysical Activity Forecast: Geomagnetic activity is expected to be at mostly quiet levels during the period (19 - 21 October). III. Event Probabilities 19 Oct-21 Oct Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 18 Oct 069 Predicted 19 Oct-21 Oct 069/069/068 90 Day Mean 18 Oct 067 V. Geomagnetic A Indices Observed Afr/Ap 17 Oct 001/002 Estimated Afr/Ap 18 Oct 002/005 Predicted Afr/Ap 19 Oct-21 Oct 005/005-005/005-005/005 VI. Geomagnetic Activity Probabilities 19 Oct-21 Oct A. Middle Latitudes Active 05/05/01 Minor storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 10/10/05 Minor storm 01/01/01 Major-severe storm 01/01/01