:Product: 20030206RSGA.txt :Issued: 2003 Feb 06 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 037 Issued at 2200Z on 06 Feb 2003 IA. Analysis of Solar Active Regions and Activity from 05/2100Z to 06/2100Z: Solar activity was at low to moderate levels. An M1.2 at 06/0349 UTC from Region 278 (N18E64) was the only M-class activity. There were several C-class flares, with a maximum of C3.4 at 06/0214 UTC from Region 277 (S17E55). Regions 276 (S15E22), 277, and 278 continue to show activity. Regions 280 (S08E29) and 281 (S14E73) were numbered today. IB. Solar Activity Forecast: Solar activity is expected to be mostly low with isolated M-class flare activity from Regions 276, 277, and 278 possible. IIA. Geophysical Activity Summary 05/2100Z to 06/2100Z: The geomagnetic field was mostly quiet to unsettled with an isolated period of active levels during the past 24 hours. Solar wind observation shows a continued high speed stream associated with a coronal hole. The greater than 2MeV electron fluxes at geosynchronous orbit have been at mostly high levels for the last 24 hours. IIB. Geophysical Activity Forecast: For the forecast period, the geomagnetic field is expected to remain mostly quiet to unsettled with isolated periods of active levels due to a favorably positioned coronal hole. III. Event Probabilities 07 Feb-09 Feb Class M 55/50/50 Class X 10/05/05 Proton 05/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 06 Feb 150 Predicted 07 Feb-09 Feb 155/160/165 90 Day Mean 06 Feb 153 V. Geomagnetic A Indices Observed Afr/Ap 05 Feb 007/012 Estimated Afr/Ap 06 Feb 012/015 Predicted Afr/Ap 07 Feb-09 Feb 008/010-005/008-008/008 VI. Geomagnetic Activity Probabilities 07 Feb-09 Feb A. Middle Latitudes Active 35/30/30 Minor storm 15/10/10 Major-severe storm 01/01/01 B. High Latitudes Active 40/35/35 Minor storm 15/15/15 Major-severe storm 05/05/05