Report of Solar Geophysical Activity (RSGA)

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 153 Issued at 2200Z on 01 Jun 2020
IA. Analysis of Solar Active Regions and Activity from 31/2100Z to 01/2100Z: 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 with a slight chance for a C-class flare on day one (02 Jun) and expected to be very low on days two and three (03 Jun, 04 Jun).
IIA. Geophysical Activity Summary 31/2100Z to 01/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 435 km/s at 31/2236Z. Total IMF reached 6 nT at 01/2042Z. The maximum southward component of Bz reached -6 nT at 01/2030Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 176 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one, two, and three (02 Jun, 03 Jun, 04 Jun).
III. Event probabilities 02 Jun-04 Jun Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green
IV. Penticton 10.7 cm Flux Observed 01 Jun 069 Predicted 02 Jun-04 Jun 070/072/072 90 Day Mean 01 Jun 070
V. Geomagnetic A Indices Observed Afr/Ap 31 May 004/003 Estimated Afr/Ap 01 Jun 004/005 Predicted Afr/Ap 02 Jun-04 Jun 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 02 Jun-04 Jun A. Middle Latitudes Active 05/10/10 Minor Storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/20/20 Minor Storm 20/20/20 Major-severe storm 10/10/10
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