Viewing archive of Monday, 19 December 2022
Solar activity report
Report of Solar-Geophysical Activity 2022 Dec 19 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 353 Issued at 2200Z on 19 Dec 2022IA. Analysis of Solar Active Regions and Activity from 18-2100Z to 19-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C8 event observed at
19/1429Z from Region 3169 (N21E48). There are currently 8 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares and a slight chance for an X-class flare on
days one, two, and three (20 Dec, 21 Dec, 22 Dec).
IIA. Geophysical Activity Summary 18-2100Z to 19-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 384 km/s at 19/2037Z. Total IMF reached 16
nT at 19/0124Z. The maximum southward component of Bz reached -13 nT at
19/0500Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 136 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on days one and three (20 Dec, 22 Dec)
and quiet to minor storm levels on day two (21 Dec). Protons have a
slight chance of crossing threshold on days one, two, and three (20 Dec,
21 Dec, 22 Dec).
III. Event Probabilities 20 Dec to 22 Dec
| Class M | 30% | 30% | 30% |
| Class X | 10% | 10% | 10% |
| Proton | 10% | 10% | 10% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 19 Dec 152 Predicted 20 Dec-22 Dec 145/135/125 90 Day Mean 19 Dec 133
V. Geomagnetic A Indices
Observed Afr/Ap 18 Dec 002/003 Estimated Afr/Ap 19 Dec 010/011 Predicted Afr/Ap 20 Dec-22 Dec 008/010-017/020-010/012
VI. Geomagnetic Activity Probabilities 20 Dec to 22 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 40% | 25% |
| Minor storm | 10% | 25% | 10% |
| Major-severe storm | 01% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 20% |
| Minor storm | 30% | 20% | 25% |
| Major-severe storm | 40% | 15% | 20% |
All times in UTC
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