:Product: 20030724RSGA.txt :Issued: 2003 Jul 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 205 Issued at 2200Z on 24 Jul 2003 IA. Analysis of Solar Active Regions and Activity from 23/2100Z to 24/2100Z: Solar activity was low. Region 417 (S22W91) continued to produce several C-class events during the period. There was an observed Type II radio sweep associated with a C1 at 24/0249 UTC. This seems to be from Region 417 which was optically correlated with the SXI imagery. Region 410 (S13W79) continues to decay but maintains a little of its magnetic complexity and is a beta gamma group today. A new region emerged on the disk toady and was numbered as Region 420 (N11E79). This is most likely the return of old Region 397 which produced several M-class events during its last rotation. IB. Solar Activity Forecast: Solar activity is expected to be low. An isolated M-class event is possible from Region 410. IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z: The geomagnetic field has been at quiet to active levels. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be predominantly quiet to unsettled for the next three days. III. Event Probabilities 25 Jul-27 Jul Class M 25/20/15 Class X 05/05/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 24 Jul 125 Predicted 25 Jul-27 Jul 120/125/125 90 Day Mean 24 Jul 128 V. Geomagnetic A Indices Observed Afr/Ap 23 Jul 010/011 Estimated Afr/Ap 24 Jul 010/010 Predicted Afr/Ap 25 Jul-27 Jul 012/012-015/015-012/012 VI. Geomagnetic Activity Probabilities 25 Jul-27 Jul A. Middle Latitudes Active 25/30/25 Minor storm 05/10/05 Major-severe storm 01/01/01 B. High Latitudes Active 30/35/30 Minor storm 10/15/10 Major-severe storm 05/05/05