Viewing archive of Monday, 16 January 2023
Solar activity report
Report of Solar-Geophysical Activity 2023 Jan 16 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 16 Issued at 2200Z on 16 Jan 2023IA. Analysis of Solar Active Regions and Activity from 15-2100Z to 16-2100Z 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
16/0923Z from Region 3182 (S17W75). There are currently 9 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
(17 Jan, 18 Jan, 19 Jan).
IIA. Geophysical Activity Summary 15-2100Z to 16-2100Z
The geomagnetic
field has been at quiet to minor storm levels for the past 24 hours.
Solar wind speed reached a peak of 534 km/s at 16/0315Z. Total IMF
reached 14 nT at 15/2300Z. The maximum southward component of Bz reached
-9 nT at 15/2254Z. Electrons greater than 2 MeV at geosynchronous orbit
reached a peak level of 546 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and two (17 Jan, 18 Jan)
and quiet to active levels on day three (19 Jan). Protons have a slight
chance of crossing threshold on days one, two, and three (17 Jan, 18
Jan, 19 Jan).
III. Event Probabilities 17 Jan to 19 Jan
| Class M | 60% | 60% | 60% |
| Class X | 15% | 15% | 15% |
| Proton | 15% | 15% | 15% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 16 Jan 228 Predicted 17 Jan-19 Jan 226/226/226 90 Day Mean 16 Jan 143
V. Geomagnetic A Indices
Observed Afr/Ap 15 Jan 017/023 Estimated Afr/Ap 16 Jan 014/015 Predicted Afr/Ap 17 Jan-19 Jan 008/008-007/010-011/015
VI. Geomagnetic Activity Probabilities 17 Jan to 19 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 25% | 35% |
| Minor storm | 01% | 05% | 20% |
| Major-severe storm | 01% | 01% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 10% |
| Minor storm | 20% | 30% | 30% |
| Major-severe storm | 20% | 30% | 50% |
All times in UTC
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