Viewing archive of Sunday, 2 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 02 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 337 Issued at 2200Z on 02 Dec 2012IA. Analysis of Solar Active Regions and Activity from 01-2100Z to 02-2100Z 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
01/2142Z. 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 (03 Dec, 04 Dec, 05 Dec) with a
chance for an isolated C-class flare.
IIA. Geophysical Activity Summary 01-2100Z to 02-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed, as measured by the ACE spacecraft, reached a peak speed of
360 km/s at 02/0343Z. Total IMF reached 11 nT at 02/0105Z. The maximum
southward component of Bz reached -7 nT at 02/0733Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels for the next three days (03 Dec, 04 Dec, 05 Dec)
with a chance for unsettled levels on 03 Dec.
III. Event Probabilities 03 Dec to 05 Dec
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 02 Dec 098 Predicted 03 Dec-05 Dec 100/100/105 90 Day Mean 02 Dec 121
V. Geomagnetic A Indices
Observed Afr/Ap 01 Dec 003/004 Estimated Afr/Ap 02 Dec 007/008 Predicted Afr/Ap 03 Dec-05 Dec 008/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 03 Dec to 05 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 05% | 05% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 15% | 15% | 10% |
| Major-severe storm | 05% | 05% | 05% |
All times in UTC
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