Viewing archive of Sunday, 9 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 09 2204 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 343 Issued at 2200Z on 09 Dec 2007IA. Analysis of Solar Active Regions and Activity from 08-2100Z to 09-2100Z Solar activity was very low. Region 978 (S09E26)
produced a B9.4 flare during this perioed.
IB. Solar Activity Forecast
Solar activity is expected to range
from very low to low. C-class activity is likely from region 978.
IIA. Geophysical Activity Summary 08-2100Z to 09-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field activity
level will increase from quiet to unsettled early on day 2 as a
recurrent coronal hole becomes geoeffective. There is a slight
chance of isolated active periods at high latitudes.
III. Event Probabilities 10 Dec to 12 Dec
| Class M | 15% | 15% | 15% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 09 Dec 089 Predicted 10 Dec-12 Dec 085/085/085 90 Day Mean 09 Dec 069
V. Geomagnetic A Indices
Observed Afr/Ap 08 Dec 001/000 Estimated Afr/Ap 09 Dec 005/005 Predicted Afr/Ap 10 Dec-12 Dec 005/005-008/008-008/008
VI. Geomagnetic Activity Probabilities 10 Dec to 12 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 20% | 20% |
| Minor storm | 05% | 15% | 15% |
| Major-severe storm | 01% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 25% | 25% |
| Minor storm | 15% | 15% | 15% |
| Major-severe storm | 05% | 05% | 05% |
All times in UTC
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