- Press Release
- Oct 3, 2022
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast 9 December 2019
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 343 Issued at 2200Z on 09 Dec 2019
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 Dec, 11 Dec, 12 Dec).
IIA. Geophysical Activity Summary 08/2100Z to 09/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 384 km/s at 08/2208Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 137 pfu.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one, two, and three (10 Dec, 11 Dec, 12 Dec).
III. Event probabilities 10 Dec-12 Dec
Class M 01/01/01
Class X 01/01/01
IV. Penticton 10.7 cm Flux
Observed 09 Dec 071
Predicted 10 Dec-12 Dec 070/070/070
90 Day Mean 09 Dec 069
V. Geomagnetic A Indices
Observed Afr/Ap 08 Dec 002/002
Estimated Afr/Ap 09 Dec 008/008
Predicted Afr/Ap 10 Dec-12 Dec 006/005-006/005-006/005
VI. Geomagnetic Activity Probabilities 10 Dec-12 Dec
A. Middle Latitudes
Minor Storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Minor Storm 15/15/15
Major-severe storm 10/10/10