:Product: 1124RSGA.txt :Issued: 2013 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 Solar Geophysical Activity Report and Forecast SDF Number 328 Issued at 2200Z on 24 Nov 2013 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 solar event of the period was a C4 event observed at 24/0752Z from Region 1904 (N12W82). There are currently 4 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is likely to be low with a chance for M-class flares on days one and two (25 Nov, 26 Nov) and likely to be low with a slight chance for an M-class flare on day three (27 Nov). IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 390 km/s at 23/2158Z. Total IMF reached 6 nT at 23/2332Z. The maximum southward component of Bz reached -4 nT at 24/0054Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one, two, and three (25 Nov, 26 Nov, 27 Nov). III. Event probabilities 25 Nov-27 Nov Class M 25/25/10 Class X 05/05/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 24 Nov 127 Predicted 25 Nov-27 Nov 135/130/130 90 Day Mean 24 Nov 127 V. Geomagnetic A Indices Observed Afr/Ap 23 Nov 006/007 Estimated Afr/Ap 24 Nov 002/003 Predicted Afr/Ap 25 Nov-27 Nov 007/008-007/010-008/008 VI. Geomagnetic Activity Probabilities 25 Nov-27 Nov A. Middle Latitudes Active 10/15/10 Minor Storm 01/05/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 20/25/20 Major-severe storm 20/25/20