:Product: 1026RSGA.txt :Issued: 2006 Oct 26 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 299 Issued at 2200Z on 26 Oct 2006 IA. Analysis of Solar Active Regions and Activity from 25/2100Z to 26/2100Z: Solar activity was at very low levels. There were no spotted regions on the visible disk during the period. IB. Solar Activity Forecast: Solar activity is expected to be at very low levels. IIA. Geophysical Activity Summary 25/2100Z to 26/2100Z: The geomagnetic field was at quiet levels. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels again today. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on 27 October. A recurrent coronal hole high speed stream is expected to become geoeffective on 28 October. Active to minor storm conditions can be expected with the onset of the coronal hole. A return to quiet to unsettled levels is expected on 29 October. III. Event Probabilities 27 Oct-29 Oct Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 26 Oct 072 Predicted 27 Oct-29 Oct 070/070/070 90 Day Mean 26 Oct 077 V. Geomagnetic A Indices Observed Afr/Ap 25 Oct 004/004 Estimated Afr/Ap 26 Oct 002/005 Predicted Afr/Ap 27 Oct-29 Oct 010/010-018/020-008/010 VI. Geomagnetic Activity Probabilities 27 Oct-29 Oct A. Middle Latitudes Active 20/40/20 Minor storm 10/15/05 Major-severe storm 05/10/01 B. High Latitudes Active 25/45/25 Minor storm 10/20/10 Major-severe storm 05/10/05