Viewing archive of Saturday, 15 December 2012
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 2012 Dec 15 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 350 Issued at 2200Z on 15 Dec 2012IA. Analysis of Solar Active Regions and Activity from 14-2100Z to 15-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C1 event observed at
15/1947Z from Region 1631 (N21W46). There are currently 5 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a slight chance for an M-class flare on days one, two, and three (16
Dec, 17 Dec, 18 Dec).
IIA. Geophysical Activity Summary 14-2100Z to 15-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed,
as measured by the ACE spacecraft, reached a peak speed of 400 km/s at
15/2035Z. Total IMF reached 11.5 nT at 15/0022Z. The maximum southward
component of Bz reached -8.9 nT at 15/0038Z. Protons greater than 10 MeV
at geosynchronous orbit reached a peak level of 9 pfu at 15/0155Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels for the next three days (16 Dec, 17
Dec, 18 Dec) with a chance for active periods on 17 December.
III. Event Probabilities 16 Dec to 18 Dec
| Class M | 15% | 15% | 15% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 15 Dec 122 Predicted 16 Dec-18 Dec 125/125/120 90 Day Mean 15 Dec 120
V. Geomagnetic A Indices
Observed Afr/Ap 14 Dec 004/002 Estimated Afr/Ap 15 Dec 006/006 Predicted Afr/Ap 16 Dec-18 Dec 007/008-012/016-011/012
VI. Geomagnetic Activity Probabilities 16 Dec to 18 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 15% | 15% |
| Minor storm | 01% | 01% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 10% | 20% | 15% |
| Major-severe storm | 05% | 20% | 15% |
All times in UTC
Latest news
Sunday, 8 December 2024
X2.2 solar flare, SDO outage
Thursday, 21 November 2024
Major far side eruption, S1 radiation storm
Monday, 11 November 2024
Coronal hole faces Earth
Latest forum messages
AR 13932 13Power transmission for all of us. And why I believe we are better prepared than ever for major solar events 11Strong far side CME 335Incoming & Unnumbered Active Regions 1353Unspecified geomagnetic activity 1750
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 | 2024/12/22 | M1.1 |
| 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 | 114 -43.9 |