:Product: 0127RSGA.txt :Issued: 2007 Jan 27 2204 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 027 Issued at 2200Z on 27 Jan 2007 IA. Analysis of Solar Active Regions and Activity from 26/2100Z to 27/2100Z: Solar activity was very low. Region 940 (S06E62) produced a B1 flare at 27/0124Z. This region remains an alpha sunspot group. IB. Solar Activity Forecast: Solar activity is expected to be very low to low. IIA. Geophysical Activity Summary 26/2100Z to 27/2100Z: The geomagnetic field was quiet. 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 unsettled to active for the next three days. Isolated minor storm periods are possible on 29-30 January due to a recurrent coronal hole high speed stream. III. Event Probabilities 28 Jan-30 Jan Class M 05/05/05 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 27 Jan 081 Predicted 28 Jan-30 Jan 085/085/090 90 Day Mean 27 Jan 084 V. Geomagnetic A Indices Observed Afr/Ap 26 Jan 003/002 Estimated Afr/Ap 27 Jan 005/008 Predicted Afr/Ap 28 Jan-30 Jan 008/010-012/020-015/020 VI. Geomagnetic Activity Probabilities 28 Jan-30 Jan A. Middle Latitudes Active 20/25/30 Minor storm 10/15/15 Major-severe storm 01/05/05 B. High Latitudes Active 25/30/30 Minor storm 10/20/20 Major-severe storm 01/10/10