:Product: 20021101RSGA.txt :Issued: 2002 Nov 01 2200 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Environment Center and the U.S. Air Force. # Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 305 Issued at 2200Z on 01 Nov 2002 IA. Analysis of Solar Active Regions and Activity from 31/2100Z to 01/2100Z: Solar activity has been low. Several low to mid C-class flares were observed during the period. Region 175 (N15E18) and Region 177 (N15E43) were responsible for the majority of the events. Region 177 has doubled in area and sunspot count in the last 24 hours and is now averaging around 310 millionths white light area with 15 spots. Two new regions were numbered today as Region 179 (N02E72) and 180 (S11E70). IB. Solar Activity Forecast: Solar activity is expected to be low to moderate. Region 175 and 177 have the potential to produce an isolated M-class event. IIA. Geophysical Activity Summary 31/2100Z to 01/2100Z: The geomagnetic field has been quiet to unsettled. The greater than 2 MeV electron fluxes reached high levels during the past 24 hours. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled for 2 November. Unsettled to active conditions are possible on 3-4 November due to the effects of a recurring coronal hole. III. Event Probabilities 02 Nov-04 Nov Class M 45/45/45 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 01 Nov 162 Predicted 02 Nov-04 Nov 170/175/180 90 Day Mean 01 Nov 172 V. Geomagnetic A Indices Observed Afr/Ap 31 Oct 013/018 Estimated Afr/Ap 01 Nov 008/012 Predicted Afr/Ap 02 Nov-04 Nov 010/012-015/020-015/020 VI. Geomagnetic Activity Probabilities 02 Nov-04 Nov A. Middle Latitudes Active 30/35/35 Minor storm 10/20/20 Major-severe storm 05/10/10 B. High Latitudes Active 35/40/40 Minor storm 20/25/25 Major-severe storm 10/10/10