Viewing archive of Saturday, 14 December 2024
Solar activity report
Report of Solar-Geophysical Activity 2024 Dec 14 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 349 Issued at 2200Z on 14 Dec 2024IA. Analysis of Solar Active Regions and Activity from 13-2100Z to 14-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C4 event observed at
14/0147Z. There are currently 4 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares on days one, two, and three (15 Dec, 16 Dec,
17 Dec).
IIA. Geophysical Activity Summary 13-2100Z to 14-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 359 km/s at 13/2237Z. Total IMF reached 12
nT at 14/1833Z. The maximum southward component of Bz reached -10 nT at
14/1541Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 355 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on days one and three (15 Dec, 17 Dec)
and quiet to unsettled levels on day two (16 Dec).
III. Event Probabilities 15 Dec to 17 Dec
| Class M | 45% | 45% | 35% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 14 Dec 171 Predicted 15 Dec-17 Dec 170/170/165 90 Day Mean 14 Dec 200
V. Geomagnetic A Indices
Observed Afr/Ap 13 Dec 002/003 Estimated Afr/Ap 14 Dec 009/011 Predicted Afr/Ap 15 Dec-17 Dec 008/010-009/008-012/015
VI. Geomagnetic Activity Probabilities 15 Dec to 17 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 35% |
| Minor storm | 05% | 05% | 15% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 10% |
| Minor storm | 30% | 25% | 25% |
| Major-severe storm | 30% | 25% | 50% |
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 |