:Product: Report of Solar-Geophysical Activity :Issued: 2018 Nov 27 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 331 Issued at 2200Z on 27 Nov 2018 IA. Analysis of Solar Active Regions and Activity from 26/2100Z to 27/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 0 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be very low on days one, two, and three (28 Nov, 29 Nov, 30 Nov). IIA. Geophysical Activity Summary 26/2100Z to 27/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 422 km/s at 27/2057Z. Total IMF reached 7 nT at 27/2039Z. The maximum southward component of Bz reached -7 nT at 27/1955Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one, two, and three (28 Nov, 29 Nov, 30 Nov). III. Event probabilities 28 Nov-30 Nov Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 27 Nov 068 Predicted 28 Nov-30 Nov 068/068/068 90 Day Mean 27 Nov 069 V. Geomagnetic A Indices Observed Afr/Ap 26 Nov 002/001 Estimated Afr/Ap 27 Nov 005/006 Predicted Afr/Ap 28 Nov-30 Nov 005/005-006/005-006/005 VI. Geomagnetic Activity Probabilities 28 Nov-30 Nov A. Middle Latitudes Active 10/10/10 Minor Storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 20/20/20 Major-severe storm 15/15/15