:Product: 20010223RSGA.txt :Issued: 2001 Feb 23 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 054 Issued at 2200Z on 23 Feb 2001 IA. Analysis of Solar Active Regions and Activity from 22/2100Z to 23/2100Z: Solar activity was low with only two weak C-class X-ray flares. Region 9354 (S09W59) grew in size, but maintained a relatively simple magnetic configuration. No new regions were numbered today. IB. Solar Activity Forecast: Solar activity is expected to be low. IIA. Geophysical Activity Summary 22/2100Z to 23/2100Z: The geomagnetic field was quiet to active. An isolated active period occurred between 06Z and 09Z. IIB. Geophysical Activity Forecast: Solar activity is expected to be quiet to unsettled. III. Event Probabilities 24 Feb-26 Feb Class M 20/20/20 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 23 Feb 145 Predicted 24 Feb-26 Feb 145/145/140 90 Day Mean 23 Feb 166 V. Geomagnetic A Indices Observed Afr/Ap 22 Feb 007/006 Estimated Afr/Ap 23 Feb 010/012 Predicted Afr/Ap 24 Feb-26 Feb 005/008-005/005-005/005 VI. Geomagnetic Activity Probabilities 24 Feb-26 Feb A. Middle Latitudes Active 20/20/20 Minor storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 35/25/25 Minor storm 10/10/10 Major-severe storm 01/01/01