Viewing archive of Thursday, 23 November 2023
Solar activity report
Report of Solar-Geophysical Activity 2023 Nov 23 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 327 Issued at 2200Z on 23 Nov 2023IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M1 event observed at
23/0338Z. There are currently 11 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
(24 Nov, 25 Nov, 26 Nov).
IIA. Geophysical Activity Summary 22-2100Z to 23-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 537 km/s at 22/2323Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 709 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (24 Nov), quiet to active
levels on day two (25 Nov) and unsettled to active levels on day three
(26 Nov).
III. Event Probabilities 24 Nov to 26 Nov
| Class M | 60% | 60% | 60% |
| Class X | 10% | 10% | 10% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 23 Nov 194 Predicted 24 Nov-26 Nov 195/195/195 90 Day Mean 23 Nov 148
V. Geomagnetic A Indices
Observed Afr/Ap 22 Nov 017/024 Estimated Afr/Ap 23 Nov 009/010 Predicted Afr/Ap 24 Nov-26 Nov 007/005-007/010-014/018
VI. Geomagnetic Activity Probabilities 24 Nov to 26 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 20% | 45% |
| Minor storm | 05% | 05% | 20% |
| Major-severe storm | 01% | 01% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 10% |
| Minor storm | 20% | 20% | 25% |
| Major-severe storm | 20% | 20% | 60% |
All times in UTC
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Space weather facts
| Last X-flare | 2024/12/08 | X2.2 |
| Last M-flare | 2024/12/22 | M1.0 |
| Last geomagnetic storm | 2024/12/17 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2024 | 152.5 -13.9 |
| December 2024 | 103.3 -49.2 |
| Last 30 days | 115.4 -40.8 |