Viewing archive of Friday, 4 January 2008
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 2008 Jan 04 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 004 Issued at 2200Z on 04 Jan 2008IA. Analysis of Solar Active Regions and Activity from 03-2100Z to 04-2100Z Solar activity was very low. Region 980 (S06E29)
produced one low level B-class flare during the past 24 hours. The
region continued to decay and is now classified as a simple Axx
sunspot group. New Region 981 (N30E22) is classified as a Cso beta
sunspot group. This region is likely a new solar cycle sunspot
group. A very faint backsided CME was observed on LASCO C2 imagery
at 4/1454Z.
IB. Solar Activity Forecast
Solar activity is expected to be very
low. There remains a slight chance for an isolated C-class event.
IIA. Geophysical Activity Summary 03-2100Z to 04-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled, with isolated active periods for
the forecast period (5-7 January). Isolated minor storm periods are
possible at high latitudes on 7 January.
III. Event Probabilities 05 Jan to 07 Jan
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 04 Jan 079 Predicted 05 Jan-07 Jan 080/080/080 90 Day Mean 04 Jan 073
V. Geomagnetic A Indices
Observed Afr/Ap 03 Jan 001/001 Estimated Afr/Ap 04 Jan 001/001 Predicted Afr/Ap 05 Jan-07 Jan 008/008-008/010-010/015
VI. Geomagnetic Activity Probabilities 05 Jan to 07 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 25% |
| Minor storm | 10% | 10% | 15% |
| Major-severe storm | 01% | 01% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 30% |
| Minor storm | 10% | 15% | 20% |
| Major-severe storm | 01% | 05% | 10% |
All times in UTC
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