Viewing archive of Saturday, 8 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 08 2203 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 08 Dec 2007IA. Analysis of Solar Active Regions and Activity from 07-2100Z to 08-2100Z Solar activity was very low. Region 978 (S10E39) has
grown and new region 979 (N07W65) emerged.
IB. Solar Activity Forecast
Solar activity is expected to range
from very low to low. The development of Region 978 (S10E39 ) and
emergence of Region 979 (N07W65) bring an increased possiblity of
C-Class activity.
IIA. Geophysical Activity Summary 07-2100Z to 08-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to remain at quiet levels for day 1 and 2, then increase to
unsettled levels on day 3 as a recurrent coronal hole high speed
stream becomes geoeffective.
III. Event Probabilities 09 Dec to 11 Dec
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 08 Dec 087 Predicted 09 Dec-11 Dec 085/085/085 90 Day Mean 08 Dec 069
V. Geomagnetic A Indices
Observed Afr/Ap 07 Dec 000/001 Estimated Afr/Ap 08 Dec 005/002 Predicted Afr/Ap 09 Dec-11 Dec 005/005-005/005-008/008
VI. Geomagnetic Activity Probabilities 09 Dec to 11 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 25% |
| Minor storm | 05% | 05% | 15% |
| Major-severe storm | 01% | 01% | 05% |
All times in UTC
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