:Product: 1124RSGA.txt :Issued: 2011 Nov 24 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 328 Issued at 2200Z on 24 Nov 2011 IA. Analysis of Solar Active Regions and Activity from 23/2100Z to 24/2100Z: Solar activity has been at low levels for the past 24 hours. The largest event of the period was a C1 flare from Region 1356 (N15E16). A new sunspot group was numbered early in the period in the northwest quadrant, Region 1359 (N16W52). A CME was observed off the west limb in LASCO C2 imagery at 24/0125Z, but after careful analysis, there appears to be no Earth directed components. IB. Solar Activity Forecast: Solar activity is expected to be at low levels with a slight chance for M-class activity for the next three days (25-27 November). IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z: The geomagnetic field has been at mostly quiet levels with an isolated period at minor storm levels observed at high latitudes. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at predominantly quiet levels for the next three days (25-27 November). III. Event Probabilities 25 Nov-27 Nov Class M 15/15/10 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 24 Nov 137 Predicted 25 Nov-27 Nov 135/130/130 90 Day Mean 24 Nov 140 V. Geomagnetic A Indices Observed Afr/Ap 23 Nov 004/005 Estimated Afr/Ap 24 Nov 005/005 Predicted Afr/Ap 25 Nov-27 Nov 005/005-005/007-006/008 VI. Geomagnetic Activity Probabilities 25 Nov-27 Nov A. Middle Latitudes Active 05/04/07 Minor storm 01/00/01 Major-severe storm 00/00/00 B. High Latitudes Active 16/15/17 Minor storm 17/14/20 Major-severe storm 07/05/10