:Product: 20021010RSGA.txt :Issued: 2002 Oct 10 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 283 Issued at 2200Z on 10 Oct 2002 IA. Analysis of Solar Active Regions and Activity from 09/2100Z to 10/2100Z: Solar activity was low. Only a few small C-flares occurred. Region 139 (N11W33) remains the largest sunspot group but has not produced significant activity. The region appears to have changed little. New Regions 153 (S05E47) and 154 (S12E68) were numbered. IB. Solar Activity Forecast: Solar activity is expected to be low to moderate. Region 139 is the most likely source of M-class flares. IIA. Geophysical Activity Summary 09/2100Z to 10/2100Z: The geomagnetic field ranged from quiet to minor storm levels. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be unsettled to active becoming quiet to unsettled. III. Event Probabilities 11 Oct-13 Oct Class M 40/30/30 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 10 Oct 172 Predicted 11 Oct-13 Oct 175/180/185 90 Day Mean 10 Oct 181 V. Geomagnetic A Indices Observed Afr/Ap 09 Oct 009/022 Estimated Afr/Ap 10 Oct 010/020 Predicted Afr/Ap 11 Oct-13 Oct 010/015-010/010-008/010 VI. Geomagnetic Activity Probabilities 11 Oct-13 Oct A. Middle Latitudes Active 30/15/10 Minor storm 10/10/05 Major-severe storm 01/01/01 B. High Latitudes Active 30/25/20 Minor storm 15/15/10 Major-severe storm 01/01/01