Viewing archive of Sunday, 30 December 2007
Solar activity report
Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Report of Solar-Geophysical Activity 2007 Dec 30 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 364 Issued at 2200Z on 30 Dec 2007IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z Solar activity was low due to a C1.7 flare observed at
30/2005Z. The most likely origin of the flare was a brightening on
the east limb near where old Region 978 (S08, L=223) is expected to
return.
IB. Solar Activity Forecast
Solar activity is expected to remain
very low to low. An increasing chance of C-class activity is
expected through the forecast period (31 Dec 07 - 2 Jan 08).
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic field was quiet. The greater than 2 MeV electrons at
geosynchronous orbit reached high levels again today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to remain quiet.
III. Event Probabilities 31 Dec to 02 Jan
| Class M | 01% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Dec 075 Predicted 31 Dec-02 Jan 075/075/080 90 Day Mean 30 Dec 071
V. Geomagnetic A Indices
Observed Afr/Ap 29 Dec 002/002 Estimated Afr/Ap 30 Dec 005/005 Predicted Afr/Ap 31 Dec-02 Jan 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 31 Dec to 02 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 00% |
All times in UTC
Latest news
Monday, 23 December 2024
M9.0 solar flare with earth-directed CME
Sunday, 8 December 2024
X2.2 solar flare, SDO outage
Thursday, 21 November 2024
Major far side eruption, S1 radiation storm
Latest forum messages
2024/12/23 AR13932 M8.9 & M4.1 associated CMEs 13jsoc 73AR 13932 73Ask your obscure/"stupid" space weather questions. 122Changelog/Featurelog 163
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
Space weather facts
| Last X-flare | 2024/12/08 | X2.2 |
| Last M-flare | 2024/12/24 | 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 | 115.2 -37.3 |
| Last 30 days | 120.1 -38.2 |