:Product: 0217RSGA.txt :Issued: 2014 Feb 17 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 48 Issued at 2200Z on 17 Feb 2014 IA. Analysis of Solar Active Regions and Activity from 16/2100Z to 17/2100Z: Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C6 event observed at 17/0304Z from Region 1977 (S10W16). There are currently 6 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is likely to be moderate on day one (18 Feb) and expected to be low with a chance for M-class flares on days two and three (19 Feb, 20 Feb). IIA. Geophysical Activity Summary 16/2100Z to 17/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 442 km/s at 17/1655Z. Total IMF reached 8 nT at 17/2137Z. The maximum southward component of Bz reached -3 nT at 17/1856Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one, two, and three (18 Feb, 19 Feb, 20 Feb). III. Event probabilities 18 Feb-20 Feb Class M 60/45/35 Class X 05/05/05 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 17 Feb 152 Predicted 18 Feb-20 Feb 145/135/135 90 Day Mean 17 Feb 154 V. Geomagnetic A Indices Observed Afr/Ap 16 Feb 014/018 Estimated Afr/Ap 17 Feb 005/005 Predicted Afr/Ap 18 Feb-20 Feb 006/005-006/005-006/005 VI. Geomagnetic Activity Probabilities 18 Feb-20 Feb A. Middle Latitudes Active 05/05/05 Minor Storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 15/15/15 Major-severe storm 05/05/05