:Product: 1125RSGA.txt :Issued: 2011 Nov 25 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 329 Issued at 2200Z on 25 Nov 2011 IA. Analysis of Solar Active Regions and Activity from 24/2100Z to 25/2100Z: Solar activity has been at low levels for the past 24 hours. Several small coronal mass ejections (CME) were observed but none appear to have any Earth directed components. Two new regions were numbered today, Region 1360 (N17E17) and Region 1361 (N19E59). There are over 10 numbered sunspot regions on the disk, however most have remained stable and quiet. 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 (26 - 28 November). IIA. Geophysical Activity Summary 24/2100Z to 25/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to remain at mostly quiet levels for the next two days (26 - 27 November). An increase to quiet to unsettled with a chance for active levels is expected on day three (28 November), as a coronal hole high speed stream moves into a geoeffective position. III. Event Probabilities 26 Nov-28 Nov Class M 10/10/10 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 25 Nov 135 Predicted 26 Nov-28 Nov 130/135/140 90 Day Mean 25 Nov 140 V. Geomagnetic A Indices Observed Afr/Ap 24 Nov 004/005 Estimated Afr/Ap 25 Nov 004/005 Predicted Afr/Ap 26 Nov-28 Nov 004/007-006/008-008/008 VI. Geomagnetic Activity Probabilities 26 Nov-28 Nov A. Middle Latitudes Active 04/07/21 Minor storm 00/01/05 Major-severe storm 00/00/00 B. High Latitudes Active 15/17/18 Minor storm 14/20/33 Major-severe storm 05/10/32