:Product: 20030914RSGA.txt :Issued: 2003 Sep 14 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 257 Issued at 2200Z on 14 Sep 2003 IA. Analysis of Solar Active Regions and Activity from 13/2100Z to 14/2100Z: Solar activity was at low levels. Region 456(S08W73) produce a C4/Sf flare at 14/0127Z. This region appears to be in decay but due to limb proximity analysis is unclear. A nineteen-degree filament lifted off at approximately 14/1837Z in the vicinity of N26W14. New Region 459 (S11E38) was numbered today. IB. Solar Activity Forecast: Solar activity is expected to be at very low to low levels. IIA. Geophysical Activity Summary 13/2100Z to 14/2100Z: The geomagnetic field was at quiet to unsettled levels. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels today. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to minor storm levels. Quiet to active levels are possible on day one and day two due expected weak CME effects. Active to minor storm levels are possible on day three with the arrival of a coronal hole high speed stream. III. Event Probabilities 15 Sep-17 Sep Class M 10/05/05 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 14 Sep 095 Predicted 15 Sep-17 Sep 095/095/100 90 Day Mean 14 Sep 121 V. Geomagnetic A Indices Observed Afr/Ap 13 Sep 006/011 Estimated Afr/Ap 14 Sep 006/008 Predicted Afr/Ap 15 Sep-17 Sep 012/015-015/020-025/030 VI. Geomagnetic Activity Probabilities 15 Sep-17 Sep A. Middle Latitudes Active 20/25/30 Minor storm 15/15/15 Major-severe storm 01/01/05 B. High Latitudes Active 30/35/40 Minor storm 15/15/20 Major-severe storm 01/01/10