:Product: 0716RSGA.txt :Issued: 2008 Jul 16 2203 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Weather Prediction Center and the U.S. Air Force. # Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 198 Issued at 2200Z on 16 Jul 2008 IA. Analysis of Solar Active Regions and Activity from 15/2100Z to 16/2100Z: Solar activity was very low. The visible disk remained spotless. IB. Solar Activity Forecast: Solar activity is expected to remain very low. IIA. Geophysical Activity Summary 15/2100Z to 16/2100Z: The geomagnetic field was quiet to unsettled. Solar wind speed measured at the ACE spacecraft showed a gradual decrease from 595 to 530 km/s. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled for the next three days (17-19 July). III. Event Probabilities 17 Jul-19 Jul Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 16 Jul 065 Predicted 17 Jul-19 Jul 066/066/066 90 Day Mean 16 Jul 067 V. Geomagnetic A Indices Observed Afr/Ap 15 Jul 007/007 Estimated Afr/Ap 16 Jul 005/005 Predicted Afr/Ap 17 Jul-19 Jul 008/008-005/010-005/005 VI. Geomagnetic Activity Probabilities 17 Jul-19 Jul A. Middle Latitudes Active 15/10/05 Minor storm 05/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 20/10/10 Minor storm 05/01/01 Major-severe storm 01/01/01