Viewing archive of Friday, 7 December 2007
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 2007 Dec 07 2204 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 341 Issued at 2200Z on 07 Dec 2007IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z Solar activity has been very low.
IB. Solar Activity Forecast
Solar activity is expected to remain
very low, however, there is the chance for an isolated C-class flare
from either Region 977 (S05W16) or 978 (S09E54).
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
The geomagnetic field was at quiet levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet levels 08 - 09 December. On 10 December the
geomagnetic field is expected to be unsettled due to a recurrent
coronal hole high speed stream rotating into a geoeffective
position.
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 082 Predicted 08 Dec-10 Dec 085/085/085 90 Day Mean 07 Dec 069
V. Geomagnetic A Indices
Observed Afr/Ap 06 Dec 001/001 Estimated Afr/Ap 07 Dec 001/001 Predicted Afr/Ap 08 Dec-10 Dec 005/005-005/005-008/008
VI. Geomagnetic Activity Probabilities 08 Dec to 10 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 15% |
| Minor storm | 01% | 01% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 25% |
| Minor storm | 10% | 10% | 15% |
| Major-severe storm | 01% | 01% | 05% |
All times in UTC
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