Report of Solar Geophysical Activity (RSGA)

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 143 Issued at 2200Z on 22 May 2020
IA. Analysis of Solar Active Regions and Activity from 21/2100Z to 22/2100Z: 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 (23 May, 24 May, 25 May).
IIA. Geophysical Activity Summary 21/2100Z to 22/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 377 km/s at 22/2021Z. Total IMF reached 6 nT at 22/1101Z. The maximum southward component of Bz reached -5 nT at 22/1408Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 153 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one, two, and three (23 May, 24 May, 25 May).
III. Event probabilities 23 May-25 May Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green
IV. Penticton 10.7 cm Flux Observed 22 May 071 Predicted 23 May-25 May 071/071/071 90 Day Mean 22 May 070
V. Geomagnetic A Indices Observed Afr/Ap 21 May 008/006 Estimated Afr/Ap 22 May 005/005 Predicted Afr/Ap 23 May-25 May 005/005-006/005-006/005
VI. Geomagnetic Activity Probabilities 23 May-25 May A. Middle Latitudes Active 05/05/05 Minor Storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 15/15/15 Major-severe storm 05/05/10
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