Viewing archive of Sunday, 7 December 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 Dec 07 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 342 Issued at 2200Z on 07 Dec 2008IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z Solar activity was very low.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
The geomagnetic field was at quiet to unsettled levels. Observations
at the ACE satellite indicate a continued slight influence from the
coronal hole high speed stream. Solar wind speeds have ranged from
580 km/s down to 520 km/s during the past 24 hours. The greater
than 2 MeV electron flux at geosynchronous orbit was at high levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be predominately quiet for the forecast period (08-10
December) as the high speed stream subsides.
III. Event Probabilities 08 Dec to 10 Dec
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 07 Dec 069 Predicted 08 Dec-10 Dec 070/070/070 90 Day Mean 07 Dec 068
V. Geomagnetic A Indices
Observed Afr/Ap 06 Dec 014/007 Estimated Afr/Ap 07 Dec 005/005 Predicted Afr/Ap 08 Dec-10 Dec 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 08 Dec to 10 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
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