Viewing archive of Sunday, 9 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 09 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 344 Issued at 2200Z on 09 Dec 2012IA. Analysis of Solar Active Regions and Activity from 08-2100Z to 09-2100Z
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
09/1747Z from Region 1630 (N18E02). There are currently 3 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be at very
low levels on days one, two, and three (10 Dec, 11 Dec, 12 Dec) with a
chance for C-class flares.
IIA. Geophysical Activity Summary 08-2100Z to 09-2100Z
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 349 km/s at
09/0910Z. Total IMF reached 9 nT at 09/0726Z. The maximum southward
component of Bz reached -6 nT at 09/1829Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels for the next three days (10 Dec, 11 Dec, 12 Dec)
with a chance for unsettled levels during 10 - 11 Dec.
III. Event Probabilities 10 Dec to 12 Dec
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 09 Dec 104 Predicted 10 Dec-12 Dec 105/105/105 90 Day Mean 09 Dec 119
V. Geomagnetic A Indices
Observed Afr/Ap 08 Dec 001/001 Estimated Afr/Ap 09 Dec 002/002 Predicted Afr/Ap 10 Dec-12 Dec 007/007-006/007-005/005
VI. Geomagnetic Activity Probabilities 10 Dec to 12 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 15% | 10% | 10% |
| Major-severe storm | 05% | 05% | 05% |
All times in UTC
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