Viewing archive of Wednesday, 22 November 2023
Solar activity report
Report of Solar-Geophysical Activity 2023 Nov 22 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 326 Issued at 2200Z on 22 Nov 2023IA. Analysis of Solar Active Regions and Activity from 21-2100Z to 22-2100Z 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
22/0628Z from Region 3492 (N18E36). 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
(23 Nov, 24 Nov, 25 Nov).
IIA. Geophysical Activity Summary 21-2100Z to 22-2100Z
The geomagnetic
field has been at unsettled to minor storm levels for the past 24 hours.
Solar wind speed reached a peak of 595 km/s at 22/0209Z. Total IMF
reached 14 nT at 22/0312Z. The maximum southward component of Bz reached
-13 nT at 21/2115Z. Electrons greater than 2 MeV at geosynchronous
orbit reached a peak level of 211 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on days one and three (23 Nov, 25 Nov)
and quiet to unsettled levels on day two (24 Nov).
III. Event Probabilities 23 Nov to 25 Nov
| Class M | 55% | 55% | 55% |
| Class X | 10% | 10% | 10% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 22 Nov 190 Predicted 23 Nov-25 Nov 190/190/185 90 Day Mean 22 Nov 147
V. Geomagnetic A Indices
Observed Afr/Ap 21 Nov 015/018 Estimated Afr/Ap 22 Nov 022/030 Predicted Afr/Ap 23 Nov-25 Nov 011/012-007/008-007/010
VI. Geomagnetic Activity Probabilities 23 Nov to 25 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 15% | 20% | 20% |
| Major-severe storm | 15% | 20% | 20% |
All times in UTC
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