:Product: 1214RSGA.txt :Issued: 2012 Dec 14 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 349 Issued at 2200Z on 14 Dec 2012 IA. Analysis of Solar Active Regions and Activity from 13/2100Z to 14/2100Z: Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C1 event observed at 14/1217Z. There are currently 4 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is likely to be low on day one (15 Dec) and likely to be low with a slight chance for an M-class flare on days two and three (16 Dec, 17 Dec). IIA. Geophysical Activity Summary 13/2100Z to 14/2100Z: 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 364 km/s at 14/1948Z. Total IMF reached 9.3 nT at 14/2004Z. The maximum southward component of Bz reached -6.7 nT at 14/1946Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on day one (15 Dec), quiet to unsettled levels on day two (16 Dec) and quiet to unsettled levels on day three (17 Dec) with a chance for active levels. III. Event probabilities 15 Dec-17 Dec Class M 05/10/10 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 14 Dec 119 Predicted 15 Dec-17 Dec 120/125/125 90 Day Mean 14 Dec 120 V. Geomagnetic A Indices Observed Afr/Ap 13 Dec 002/003 Estimated Afr/Ap 14 Dec 003/003 Predicted Afr/Ap 15 Dec-17 Dec 005/005-007/008-014/015 VI. Geomagnetic Activity Probabilities 15 Dec-17 Dec A. Middle Latitudes Active 01/10/15 Minor Storm 01/01/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 10/10/15 Major-severe storm 01/05/20