:Product: 1022RSGA.txt :Issued: 2009 Oct 22 2200 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 295 Issued at 2200Z on 22 Oct 2009 IA. Analysis of Solar Active Regions and Activity from 21/2100Z to 22/2100Z: Solar activity was very low. No flares were detected. The visible disk was spotless. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 21/2100Z to 22/2100Z: Geomagnetic field activity was at mostly quiet to unsettled levels. An isolated period of minor storm levels was observed at 22/1200Z. A geomagnetic sudden impulse occurred at 22/0019Z (11 nT, as measured by the Boulder USGS magnetometer). This activity was associated with a faint partial-halo CME which was observed around 17/1900Z. IIB. Geophysical Activity Forecast: Geomagnetic field activity is expected to be quiet on day one (23 October). Quiet to unsettled levels are expected on days two and three (24 - 25 October) in response to a recurrent coronal hole high speed stream. III. Event Probabilities 23 Oct-25 Oct Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 22 Oct 072 Predicted 23 Oct-25 Oct 072/072/072 90 Day Mean 22 Oct 069 V. Geomagnetic A Indices Observed Afr/Ap 21 Oct 001/001 Estimated Afr/Ap 22 Oct 008/008 Predicted Afr/Ap 23 Oct-25 Oct 005/005-008/008-008/008 VI. Geomagnetic Activity Probabilities 23 Oct-25 Oct A. Middle Latitudes Active 05/20/15 Minor storm 01/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 05/20/15 Minor storm 01/05/05 Major-severe storm 01/01/01