:Product: 1118RSGA.txt :Issued: 2007 Nov 18 2203 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 322 Issued at 2200Z on 18 Nov 2007 IA. Analysis of Solar Active Regions and Activity from 17/2100Z to 18/2100Z: Solar activity has been very low. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 17/2100Z to 18/2100Z: The geomagnetic field has been quiet. IIB. Geophysical Activity Forecast: The geomagnetic field is forecast to be quiet for 19 November. A recurrent coronal hole high speed stream is expected to rotate into a geoeffective position on 20 - 21 November creating unsettled conditions with the possibility for isolated active periods for both those days. III. Event Probabilities 19 Nov-21 Nov Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 18 Nov 069 Predicted 19 Nov-21 Nov 069/069/069 90 Day Mean 18 Nov 068 V. Geomagnetic A Indices Observed Afr/Ap 17 Nov 005/005 Estimated Afr/Ap 18 Nov 005/005 Predicted Afr/Ap 19 Nov-21 Nov 005/005-010/010-015/020 VI. Geomagnetic Activity Probabilities 19 Nov-21 Nov A. Middle Latitudes Active 15/25/30 Minor storm 05/10/15 Major-severe storm 01/05/05 B. High Latitudes Active 20/30/35 Minor storm 10/15/20 Major-severe storm 01/05/10