Viewing archive of Thursday, 6 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 06 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 341 Issued at 2200Z on 06 Dec 2012IA. Analysis of Solar Active Regions and Activity from 05-2100Z to 06-2100Z Solar activity has been at very low levels for the past 24
hours. A large filament eruption was observed in the southwest quadrant
from 06/0030Z to 06/0400Z. An associated CME was observed in LASCO C2
and C3 imagery. There are currently 4 numbered sunspot regions on the
disk, all of which are showing signs of decay.
IB. Solar Activity Forecast
Solar activity is expected to be at very
low to low levels on days one, two, and three (07 Dec, 08 Dec, 09 Dec).
IIA. Geophysical Activity Summary 05-2100Z to 06-2100Z
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 361 km/s at
06/0024Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels for days one and two (07 Dec and 08
Dec) due to possible CME effects. A return to quiet levels is expected
on day three(09 Dec).
III. Event Probabilities 07 Dec to 09 Dec
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 06 Dec 097 Predicted 07 Dec-09 Dec 095/100/100 90 Day Mean 06 Dec 120
V. Geomagnetic A Indices
Observed Afr/Ap 05 Dec 004/001 Estimated Afr/Ap 06 Dec 002/003 Predicted Afr/Ap 07 Dec-09 Dec 006/008-007/008-006/005
VI. Geomagnetic Activity Probabilities 07 Dec to 09 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 05% |
| Minor storm | 05% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 20% | 20% | 10% |
| Major-severe storm | 25% | 25% | 05% |
All times in UTC
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