Viewing archive of Friday, 13 January 2023
Solar activity report
Report of Solar-Geophysical Activity 2023 Jan 13 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 13 Issued at 2200Z on 13 Jan 2023IA. Analysis of Solar Active Regions and Activity from 12-2100Z to 13-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M3 event observed at
13/1015Z from Region 3181 (S21W87). There are currently 10 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be moderate
with a slight chance for an X-class flare on days one, two, and three
(14 Jan, 15 Jan, 16 Jan).
IIA. Geophysical Activity Summary 12-2100Z to 13-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 532 km/s at 13/1123Z. Total IMF reached 11
nT at 13/2014Z. The maximum southward component of Bz reached -11 nT at
13/2017Z. Protons greater than 10 MeV at geosynchronous orbit reached a
peak level of 4 pfu at 13/0340Z. Electrons greater than 2 MeV at
geosynchronous orbit reached a peak level of 326 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and two (14 Jan, 15 Jan)
and quiet levels on day three (16 Jan). Protons have a chance of
crossing threshold on days one, two, and three (14 Jan, 15 Jan, 16 Jan).
III. Event Probabilities 14 Jan to 16 Jan
| Class M | 55% | 55% | 55% |
| Class X | 15% | 15% | 15% |
| Proton | 25% | 25% | 25% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 13 Jan 209 Predicted 14 Jan-16 Jan 212/215/215 90 Day Mean 13 Jan 139
V. Geomagnetic A Indices
Observed Afr/Ap 12 Jan 008/007 Estimated Afr/Ap 13 Jan 007/009 Predicted Afr/Ap 14 Jan-16 Jan 008/010-008/008-006/005
VI. Geomagnetic Activity Probabilities 14 Jan to 16 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 15% |
| Minor storm | 10% | 10% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 30% | 20% |
| Major-severe storm | 35% | 35% | 20% |
All times in UTC
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