:Product: 0721RSGA.txt :Issued: 2007 Jul 21 2203 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 202 Issued at 2200Z on 21 Jul 2007 IA. Analysis of Solar Active Regions and Activity from 20/2100Z to 21/2100Z: Solar activity was very low. The visible solar disk is spotless. IB. Solar Activity Forecast: Solar activity is expected to remain very low. IIA. Geophysical Activity Summary 20/2100Z to 21/2100Z: The geomagnetic field was predominantly quiet to unsettled. A single period of minor storming occurred between 21/0300Z and 0600Z due to a coronal hole high speed stream. Solar wind speed at ACE reached a peak of 573 km/s at 21/0340Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet for the next three days (22-24 July). III. Event Probabilities 22 Jul-24 Jul Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 21 Jul 066 Predicted 22 Jul-24 Jul 068/068/068 90 Day Mean 21 Jul 074 V. Geomagnetic A Indices Observed Afr/Ap 20 Jul 009/012 Estimated Afr/Ap 21 Jul 010/010 Predicted Afr/Ap 22 Jul-24 Jul 005/005-005/005-005/005 VI. Geomagnetic Activity Probabilities 22 Jul-24 Jul A. Middle Latitudes Active 10/10/10 Minor storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor storm 05/05/05 Major-severe storm 01/01/01