:Product: 0215RSGA.txt :Issued: 2015 Feb 15 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 46 Issued at 2200Z on 15 Feb 2015 IA. Analysis of Solar Active Regions and Activity from 14/2100Z to 15/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 3 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, two, and three (16 Feb, 17 Feb, 18 Feb). IIA. Geophysical Activity Summary 14/2100Z to 15/2100Z: 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 386 km/s at 15/1742Z. Total IMF reached 11 nT at 15/1336Z. The maximum southward component of Bz reached -9 nT at 15/0821Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 316 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on day one (16 Feb) and quiet to unsettled levels on days two and three (17 Feb, 18 Feb). III. Event probabilities 16 Feb-18 Feb Class M 25/25/25 Class X 05/05/05 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 15 Feb 120 Predicted 16 Feb-18 Feb 125/130/130 90 Day Mean 15 Feb 151 V. Geomagnetic A Indices Observed Afr/Ap 14 Feb 002/002 Estimated Afr/Ap 15 Feb 007/010 Predicted Afr/Ap 16 Feb-18 Feb 012/012-009/010-007/008 VI. Geomagnetic Activity Probabilities 16 Feb-18 Feb A. Middle Latitudes Active 35/30/15 Minor Storm 10/10/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/20 Minor Storm 30/30/25 Major-severe storm 45/40/20