:Product: 1117RSGA.txt :Issued: 2009 Nov 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 321 Issued at 2200Z on 17 Nov 2009 IA. Analysis of Solar Active Regions and Activity from 16/2100Z to 17/2100Z: Solar activity was very low. A B1.5 flare occurred at 17/1259Z, most likely originating from the new emerging flux region near N19E68. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 16/2100Z to 17/2100Z: The geomagnetic field was quiet. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be predominantly quiet for days one and two (18-19 November). Quiet to unsettled levels, with a chance for isolated active periods, are expected late on day three (20 November). The increase in activity is expected as a recurrent coronal hole high-speed stream becomes geoeffective. III. Event Probabilities 18 Nov-20 Nov Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 17 Nov 077 Predicted 18 Nov-20 Nov 078/079/080 90 Day Mean 17 Nov 072 V. Geomagnetic A Indices Observed Afr/Ap 16 Nov 000/001 Estimated Afr/Ap 17 Nov 000/003 Predicted Afr/Ap 18 Nov-20 Nov 005/006-005/007-008/010 VI. Geomagnetic Activity Probabilities 18 Nov-20 Nov 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 01/01/10 Major-severe storm 01/01/01