:Product: 1118RSGA.txt :Issued: 2014 Nov 18 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 322 Issued at 2200Z on 18 Nov 2014 IA. Analysis of Solar Active Regions and Activity from 17/2100Z to 18/2100Z: 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 18/0809Z from Region 2209 (S13E07). There are currently 5 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be low with a chance for M-class flares and a slight chance for an X-class flare on days one, two, and three (19 Nov, 20 Nov, 21 Nov). IIA. Geophysical Activity Summary 17/2100Z to 18/2100Z: 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 518 km/s at 18/0121Z. Total IMF reached 6 nT at 18/2016Z. The maximum southward component of Bz reached -5 nT at 18/1119Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 3095 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on days one, two, and three (19 Nov, 20 Nov, 21 Nov). Protons have a slight chance of crossing threshold on days one, two, and three (19 Nov, 20 Nov, 21 Nov). III. Event probabilities 19 Nov-21 Nov Class M 40/40/40 Class X 10/10/10 Proton 10/10/10 PCAF green IV. Penticton 10.7 cm Flux Observed 18 Nov 167 Predicted 19 Nov-21 Nov 170/175/180 90 Day Mean 18 Nov 146 V. Geomagnetic A Indices Observed Afr/Ap 17 Nov 008/008 Estimated Afr/Ap 18 Nov 009/010 Predicted Afr/Ap 19 Nov-21 Nov 012/012-012/012-012/012 VI. Geomagnetic Activity Probabilities 19 Nov-21 Nov A. Middle Latitudes Active 30/30/30 Minor Storm 10/10/10 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 30/30/30 Major-severe storm 40/40/40