- Press Release
- Dec 1, 2022
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 283 Issued at 2200Z on 10 Oct 2022
IA. Analysis of Solar Active Regions and Activity from 09/2100Z to 10/2100Z: Solar activity has been at moderate levels for the past 24 hours.
The largest solar event of the period was a M2 event observed at 10/1628Z from Region 3112 (N22W41). There are currently 5 numbered sunspot regions on the disk.
IB. Solar Activity Forecast: Solar activity is expected to be low with a chance for M-class flares on days one, two, and three (11 Oct, 12 Oct, 13 Oct).
IIA. Geophysical Activity Summary 09/2100Z to 10/2100Z: The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed reached a peak of 632 km/s at 09/2320Z. Total IMF reached 5 nT at 10/0453Z. The maximum southward component of Bz reached -5 nT at 10/0843Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 3586 pfu.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on day one (11 Oct), quiet to active levels on day two (12 Oct) and quiet levels on day three (13 Oct).
III. Event probabilities 11 Oct-13 Oct
Class M 45/45/45
Class X 05/05/05
IV. Penticton 10.7 cm Flux
Observed 10 Oct 163
Predicted 11 Oct-13 Oct 162/159/155
90 Day Mean 10 Oct 130
V. Geomagnetic A Indices
Observed Afr/Ap 09 Oct 018/022
Estimated Afr/Ap 10 Oct 011/014
Predicted Afr/Ap 11 Oct-13 Oct 008/008-009/012-006/005
VI. Geomagnetic Activity Probabilities 11 Oct-13 Oct
A. Middle Latitudes
Minor Storm 05/10/01
Major-severe storm 01/01/01
B. High Latitudes
Minor Storm 20/25/20
Major-severe storm 20/20/10