:Product: 1017RSGA.txt :Issued: 2009 Oct 17 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 290 Issued at 2200Z on 17 Oct 2009 IA. Analysis of Solar Active Regions and Activity from 16/2100Z to 17/2100Z: Solar activity was very low. No significant flare activity was observed. However, isolated eruptive activity was observed in a plage region near S28W01. EIT wave activity and weak x-ray enhancements were associated with the eruptions. Thus far, there are no indications of Earth-directed CME activity associated with the eruptions. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 16/2100Z to 17/2100Z: Geomagnetic field activity was at quiet levels. IIB. Geophysical Activity Forecast: Geomagnetic field activity is expected to be at quiet levels through the period (18 - 20 October). III. Event Probabilities 18 Oct-20 Oct Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 17 Oct 071 Predicted 18 Oct-20 Oct 072/072/072 90 Day Mean 17 Oct 069 V. Geomagnetic A Indices Observed Afr/Ap 16 Oct 003/004 Estimated Afr/Ap 17 Oct 001/005 Predicted Afr/Ap 18 Oct-20 Oct 005/005-005/005-005/005 VI. Geomagnetic Activity Probabilities 18 Oct-20 Oct A. Middle Latitudes Active 05/05/05 Minor storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 05/05/05 Minor storm 01/01/01 Major-severe storm 01/01/01