Viewing archive of Thursday, 21 November 2024
Solar activity report
Report of Solar-Geophysical Activity 2024 Nov 21 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 21 Nov 2024IA. Analysis of Solar Active Regions and Activity from 20-2100Z to 21-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C5 event observed at
21/1352Z from Region 3901 (S07E24). There are currently 9 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 (22 Nov, 23 Nov, 24 Nov).
IIA. Geophysical Activity Summary 20-2100Z to 21-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 414 km/s at 21/1443Z. Total IMF reached 10
nT at 21/1333Z. The maximum southward component of Bz reached -7 nT at
21/1611Z. Protons greater than 10 MeV at geosynchronous orbit reached a
peak level of 29 pfu at 21/2100Z. Protons greater than 100 MeV at
geosynchronous orbit reached a peak level of 7 pfu at 21/2010Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one, two, and three (22 Nov,
23 Nov, 24 Nov). Protons greater than 10 Mev are expected to cross
threshold on day one (22 Nov) and have a slight chance of crossing
threshold on day two (23 Nov).
III. Event Probabilities 22 Nov to 24 Nov
| Class M | 50% | 50% | 50% |
| Class X | 10% | 10% | 10% |
| Proton | 99% | 10% | 05% |
| PCAF | yellow | ||
IV. Penticton 10.7 cm Flux
Observed 21 Nov 166 Predicted 22 Nov-24 Nov 170/175/175 90 Day Mean 21 Nov 208
V. Geomagnetic A Indices
Observed Afr/Ap 20 Nov 008/007 Estimated Afr/Ap 21 Nov 005/007 Predicted Afr/Ap 22 Nov-24 Nov 007/008-008/008-008/008
VI. Geomagnetic Activity Probabilities 22 Nov to 24 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 25% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 25% | 25% |
| Major-severe storm | 35% | 35% | 35% |
All times in UTC
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Space weather facts
| Last X-flare | 2024/11/06 | X2.39 |
| Last M-flare | 2024/11/22 | M1.6 |
| Last geomagnetic storm | 2024/11/10 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| October 2024 | 166.4 +25 |
| November 2024 | 142.9 -23.5 |
| Last 30 days | 155.8 +4.5 |