Viewing archive of Friday, 9 December 2022
Solar activity report
Report of Solar-Geophysical Activity 2022 Dec 09 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 343 Issued at 2200Z on 09 Dec 2022IA. Analysis of Solar Active Regions and Activity from 08-2100Z to 09-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C6 event observed at
09/1413Z. There are currently 7 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a slight chance for an M-class flare 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 active levels for the past 24 hours. Solar
wind speed reached a peak of 603 km/s at 08/2128Z. Total IMF reached 8
nT at 09/1749Z. The maximum southward component of Bz reached -6 nT at
09/0933Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 139 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (10 Dec) and quiet levels
on days two and three (11 Dec, 12 Dec).
III. Event Probabilities 10 Dec to 12 Dec
| Class M | 20% | 20% | 20% |
| Class X | 01% | 01% | 01% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 09 Dec 149 Predicted 10 Dec-12 Dec 145/145/140 90 Day Mean 09 Dec 132
V. Geomagnetic A Indices
Observed Afr/Ap 08 Dec 009/008 Estimated Afr/Ap 09 Dec 011/012 Predicted Afr/Ap 10 Dec-12 Dec 008/008-006/005-006/005
VI. Geomagnetic Activity Probabilities 10 Dec to 12 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 20% | 20% |
| Major-severe storm | 20% | 20% | 20% |
All times in UTC
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