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Solar activity report
Report of Solar-Geophysical Activity 2024 Dec 08 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 343 Issued at 2200Z on 08 Dec 2024IA. Analysis of Solar Active Regions and Activity from 07-2100Z to 08-2100Z Solar activity has been at high levels for the past 24 hours.
The largest solar event of the period was a X2 event observed at
08/0906Z from Region 3912 (S06W61). There are currently 6 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 day one (09 Dec) and
expected to be low with a chance for M-class flares and a slight chance
for an X-class flare on day two (10 Dec) and expected to be low with a
chance for M-class flares on day three (11 Dec).
IIA. Geophysical Activity Summary 07-2100Z to 08-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 419 km/s at 08/1931Z. Total IMF reached 11
nT at 08/0356Z. The maximum southward component of Bz reached -7 nT at
08/1301Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 108 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one, two, and three (09 Dec,
10 Dec, 11 Dec). Protons greater than 10 Mev have a slight chance of
crossing threshold on day one (09 Dec).
III. Event Probabilities 09 Dec to 11 Dec
| Class M | 60% | 50% | 50% |
| Class X | 10% | 10% | 05% |
| Proton | 10% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 08 Dec 178 Predicted 09 Dec-11 Dec 180/175/175 90 Day Mean 08 Dec 202
V. Geomagnetic A Indices
Observed Afr/Ap 07 Dec 005/004 Estimated Afr/Ap 08 Dec 007/007 Predicted Afr/Ap 09 Dec-11 Dec 007/008-008/008-007/008
VI. Geomagnetic Activity Probabilities 09 Dec to 11 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 25% | 25% |
| Major-severe storm | 20% | 20% | 20% |
All times in UTC
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Space weather facts
| Last X-flare | 2024/12/08 | X2.2 |
| Last M-flare | 2024/12/15 | M3.0 |
| 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 | 99.5 -53 |
| Last 30 days | 117.6 -37.8 |