Joint USAF/NOAA Solar Geophysical Activity Report and Forecast 19 November 2020

Status Report From: Space Weather Prediction Center (NOAA)
Posted: Thursday, November 19, 2020

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 324 Issued at 2200Z on 19 Nov 2020 IA. Analysis of Solar Active Regions and Activity from 18/2100Z to 19/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 1 numbered sunspot regions on the disk.

IB. Solar Activity Forecast: Solar activity is expected to be very low on days one, two, and three (20 Nov, 21 Nov, 22 Nov). IIA. Geophysical Activity Summary 18/2100Z to 19/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 325 km/s at 19/0918Z. Total IMF reached 6 nT at 19/1125Z. The maximum southward component of Bz reached -4 nT at 19/0841Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 238 pfu.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on day one (20 Nov), quiet to unsettled levels on day two (21 Nov) and quiet to active levels on day three (22 Nov). III. Event probabilities 20 Nov-22 Nov Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 19 Nov 077 Predicted 20 Nov-22 Nov 075/075/075 90 Day Mean 19 Nov 075 V. Geomagnetic A Indices Observed Afr/Ap 18 Nov 003/002 Estimated Afr/Ap 19 Nov 005/005 Predicted Afr/Ap 20 Nov-22 Nov 006/005-008/008-011/012 VI. Geomagnetic Activity Probabilities 20 Nov-22 Nov A. Middle Latitudes Active 10/20/40 Minor Storm 01/05/20 Major-severe storm 01/01/05 B. High Latitudes Active 15/15/10 Minor Storm 20/25/30 Major-severe storm 10/30/55

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