:Product: 0315RSGA.txt :Issued: 2008 Mar 15 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 075 Issued at 2200Z on 15 Mar 2008 IA. Analysis of Solar Active Regions and Activity from 14/2100Z to 15/2100Z: Solar activity was very low. New region 986 (S04W41) was numbered today. It was initially a Bxo Beta magnetic class, but has since deteriorated to an Alpha magnetic class. IB. Solar Activity Forecast: Solar activity is expected to remain very low. IIA. Geophysical Activity Summary 14/2100Z to 15/2100Z: The geomagnetic field ranged from quiet to active levels. The greater than 2 MeV electron flux at geosynchronous orbit remained at high levels. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to active on days one and two (16-17 March) due to the continued influence of a coronal hole high speed stream. Quiet to unsettled conditions are expected on day three (18 March) as the effects of the high speed stream subside. III. Event Probabilities 16 Mar-18 Mar Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 15 Mar 070 Predicted 16 Mar-18 Mar 070/070/070 90 Day Mean 15 Mar 072 V. Geomagnetic A Indices Observed Afr/Ap 14 Mar 012/013 Estimated Afr/Ap 15 Mar 012/015 Predicted Afr/Ap 16 Mar-18 Mar 010/010-010/010-008/008 VI. Geomagnetic Activity Probabilities 16 Mar-18 Mar A. Middle Latitudes Active 30/30/20 Minor storm 05/05/05 Major-severe storm 05/05/01 B. High Latitudes Active 40/40/25 Minor storm 10/10/10 Major-severe storm 05/05/05