:Product: 20030224RSGA.txt :Issued: 2003 Feb 24 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 055 Issued at 2200Z on 24 Feb 2003 IA. Analysis of Solar Active Regions and Activity from 23/2100Z to 24/2100Z: Solar activity was low. Only one C-class event occurred: a C1/Sf at 1136 UTC from Region 290 (N18W33). This region continues to be the largest of the two sunspot regions currently on the solar disk. Region 290 (N18W33) became somewhat more active during the last few hours of the period with some impulsive B-flares and some associated activity in a nearby filament. IB. Solar Activity Forecast: Solar activity is expected to be low for the next three days. IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z: The geomagnetic field was at quiet to unsettled levels during the past 24 hours. Solar wind speeds showed a declining trend throughout the day. Electron fluxes reached high levels during the past 24 hours. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be predominantly unsettled for the next three days. III. Event Probabilities 25 Feb-27 Feb Class M 05/05/05 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 24 Feb 102 Predicted 25 Feb-27 Feb 105/105/105 90 Day Mean 24 Feb 144 V. Geomagnetic A Indices Observed Afr/Ap 23 Feb 010/011 Estimated Afr/Ap 24 Feb 008/008 Predicted Afr/Ap 25 Feb-27 Feb 010/010-010/012-010/012 VI. Geomagnetic Activity Probabilities 25 Feb-27 Feb A. Middle Latitudes Active 20/20/20 Minor storm 15/15/15 Major-severe storm 05/05/05 B. High Latitudes Active 25/25/25 Minor storm 15/15/15 Major-severe storm 05/05/05