Viewing archive of Monday, 31 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 31 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 366 Issued at 2200Z on 31 Dec 2012IA. Analysis of Solar Active Regions and Activity from 30-2100Z to 31-2100Z Solar activity has been at very low levels for the past 24
hours. There are currently 6 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be at low
levels on days one, two, and three (01 Jan, 02 Jan, 03 Jan).
IIA. Geophysical Activity Summary 30-2100Z to 31-2100Z
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 483 km/s at
31/0108Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels for the next three days (01 Jan, 02
Jan, 03 Jan).
III. Event Probabilities 01 Jan to 03 Jan
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 31 Dec 114 Predicted 01 Jan-03 Jan 115/120/120 90 Day Mean 31 Dec 117
V. Geomagnetic A Indices
Observed Afr/Ap 30 Dec 004/003 Estimated Afr/Ap 31 Dec 001/002 Predicted Afr/Ap 01 Jan-03 Jan 006/008-010/010-006/005
VI. Geomagnetic Activity Probabilities 01 Jan to 03 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 05% |
| Minor storm | 05% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 20% | 25% | 10% |
| Major-severe storm | 15% | 20% | 05% |
All times in UTC
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