From: Space Weather Prediction Center (NOAA)
Posted: Thursday, August 9, 2018
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 221 Issued at 2200Z on 09 Aug 2018
IA. Analysis of Solar Active Regions and Activity from 08/2100Z to 09/2100Z: 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 (10 Aug, 11 Aug, 12 Aug).
IIA. Geophysical Activity Summary 08/2100Z to 09/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 443 km/s at 08/2155Z.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one and two (10 Aug, 11 Aug) and quiet to unsettled levels on day three (12 Aug).
III. Event probabilities 10 Aug-12 Aug
Class M 01/01/01
Class X 01/01/01
IV. Penticton 10.7 cm Flux
Observed 09 Aug 070
Predicted 10 Aug-12 Aug 070/069/069
90 Day Mean 09 Aug 071
V. Geomagnetic A Indices
Observed Afr/Ap 08 Aug 006/005
Estimated Afr/Ap 09 Aug 006/005
Predicted Afr/Ap 10 Aug-12 Aug 005/005-006/005-009/008
VI. Geomagnetic Activity Probabilities 10 Aug-12 Aug
A. Middle Latitudes
Minor Storm 01/01/05
Major-severe storm 01/01/01
B. High Latitudes
Minor Storm 20/20/25
Major-severe storm 10/10/25
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