Report of Solar Geophysical Activity (RSGA)

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 212 Issued at 2200Z on 31 Jul 2018
IA. Analysis of Solar Active Regions and Activity from 30/2100Z to 31/2100Z: 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 (01 Aug, 02 Aug, 03 Aug).
IIA. Geophysical Activity Summary 30/2100Z to 31/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 345 km/s at 31/1537Z. Total IMF reached 9 nT at 31/1346Z. The maximum southward component of Bz reached -5 nT at 31/1734Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 1884 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one, two, and three (01 Aug, 02 Aug, 03 Aug).
III. Event probabilities 01 Aug-03 Aug Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green
IV. Penticton 10.7 cm Flux Observed 31 Jul 069 Predicted 01 Aug-03 Aug 069/068/068 90 Day Mean 31 Jul 071
V. Geomagnetic A Indices Observed Afr/Ap 30 Jul 005/004 Estimated Afr/Ap 31 Jul 005/005 Predicted Afr/Ap 01 Aug-03 Aug 005/005-006/005-006/005
VI. Geomagnetic Activity Probabilities 01 Aug-03 Aug A. Middle Latitudes Active 10/10/15 Minor Storm 01/01/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 20/20/20 Major-severe storm 15/15/20
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