- Press Release
- Nov 30, 2022
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast 7 September 2016
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 251 Issued at 2200Z on 07 Sep 2016
IA. Analysis of Solar Active Regions and Activity from 06/2100Z to 07/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 3 numbered sunspot regions on the disk.
IB. Solar Activity Forecast: Solar activity is likely to be low with a slight chance for an M-class flare on days one, two, and three (08 Sep, 09 Sep, 10 Sep).
IIA. Geophysical Activity Summary 06/2100Z to 07/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 549 km/s at 06/2203Z. Total IMF reached 5 nT at 07/0138Z. The maximum southward component of Bz reached -4 nT at 07/1351Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 25205 pfu.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on day one (08 Sep) and quiet levels on days two and three (09 Sep, 10 Sep).
III. Event probabilities 08 Sep-10 Sep
Class M 10/10/10
Class X 01/01/01
IV. Penticton 10.7 cm Flux
Observed 07 Sep 093
Predicted 08 Sep-10 Sep 092/092/090
90 Day Mean 07 Sep 085
V. Geomagnetic A Indices
Observed Afr/Ap 06 Sep 012/012
Estimated Afr/Ap 07 Sep 013/014
Predicted Afr/Ap 08 Sep-10 Sep 008/008-006/005-006/005
VI. Geomagnetic Activity Probabilities 08 Sep-10 Sep
A. Middle Latitudes
Minor Storm 05/01/01
Major-severe storm 01/01/01
B. High Latitudes
Minor Storm 20/15/15
Major-severe storm 15/10/10