:Product: 1116RSGA.txt :Issued: 2014 Nov 16 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 320 Issued at 2200Z on 16 Nov 2014 IA. Analysis of Solar Active Regions and Activity from 15/2100Z to 16/2100Z: Solar activity has been at high levels for the past 24 hours. The largest solar event of the period was a M5 event observed at 16/1748Z from Region 2209 (S15E31). There are currently 5 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is likely to be moderate with a chance for X-class flares on days one, two, and three (17 Nov, 18 Nov, 19 Nov). IIA. Geophysical Activity Summary 15/2100Z to 16/2100Z: The geomagnetic field has been at unsettled to active levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 706 km/s at 16/0556Z. Total IMF reached 8 nT at 15/2100Z. The maximum southward component of Bz reached -7 nT at 16/0042Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 3557 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to minor storm levels on day one (17 Nov), quiet to active levels on day two (18 Nov) and quiet to unsettled levels on day three (19 Nov). Protons have a slight chance of crossing threshold on days one, two, and three (17 Nov, 18 Nov, 19 Nov). III. Event probabilities 17 Nov-19 Nov Class M 65/65/65 Class X 25/25/25 Proton 10/10/10 PCAF green IV. Penticton 10.7 cm Flux Observed 16 Nov 172 Predicted 17 Nov-19 Nov 165/170/170 90 Day Mean 16 Nov 145 V. Geomagnetic A Indices Observed Afr/Ap 15 Nov 013/012 Estimated Afr/Ap 16 Nov 019/025 Predicted Afr/Ap 17 Nov-19 Nov 014/018-011/012-007/010 VI. Geomagnetic Activity Probabilities 17 Nov-19 Nov A. Middle Latitudes Active 35/30/20 Minor Storm 20/10/05 Major-severe storm 05/01/01 B. High Latitudes Active 10/15/15 Minor Storm 25/30/25 Major-severe storm 50/40/25