:Product: 20021126RSGA.txt :Issued: 2002 Nov 26 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 330 Issued at 2200Z on 26 Nov 2002 IA. Analysis of Solar Active Regions and Activity from 25/2100Z to 26/2100Z: Solar activity has been low. Events were limited to small C-class flares observed through the period. A new region was numbered today as Region 203 (N08E71). IB. Solar Activity Forecast: Solar activity is expected to remain low. Occasional C-class events continue to be possible from Region 197 (N24W84) and 198 (S18W61). A chance for an isolated M-class event is also possible from Region 198. IIA. Geophysical Activity Summary 25/2100Z to 26/2100Z: The geomagnetic field has been at quiet to unsettled levels. The greater than 2 MeV electron flux at geosychronous orbit reached high levels today. The observed Afr for 25 Nov is estimated due to missing data. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be predominately quiet to unsettled. Isolated active to minor storm conditions are possible for 27 Nov as a result of the activity associated with the CME observed on 24 Nov. III. Event Probabilities 27 Nov-29 Nov Class M 40/40/40 Class X 05/05/05 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 26 Nov 142 Predicted 27 Nov-29 Nov 145/150/155 90 Day Mean 26 Nov 173 V. Geomagnetic A Indices Observed Afr/Ap 25 Nov 014/017 Estimated Afr/Ap 26 Nov 010/010 Predicted Afr/Ap 27 Nov-29 Nov 015/020-015/015-015/015 VI. Geomagnetic Activity Probabilities 27 Nov-29 Nov A. Middle Latitudes Active 35/35/35 Minor storm 20/20/20 Major-severe storm 10/10/10 B. High Latitudes Active 40/35/35 Minor storm 25/20/20 Major-severe storm 10/10/10