Viewing archive of Wednesday, 12 September 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 Sep 12 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 255 Issued at 2200Z on 12 Sep 2007IA. Analysis of Solar Active Regions and Activity from 11-2100Z to 12-2100Z Solar activity continues at very low levels. There are
no sunspots on the visible disk.
IB. Solar Activity Forecast
Solar activity is expected to continue
at very low levels.
IIA. Geophysical Activity Summary 11-2100Z to 12-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled. Solar wind speed is expected to
become slightly enhanced as a coronal hole rotates into a
geoeffective position. Expect occasional unsettled periods on 14
September.
III. Event Probabilities 13 Sep to 15 Sep
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 12 Sep 066 Predicted 13 Sep-15 Sep 067/067/067 90 Day Mean 12 Sep 070
V. Geomagnetic A Indices
Observed Afr/Ap 11 Sep 002/002 Estimated Afr/Ap 12 Sep 002/003 Predicted Afr/Ap 13 Sep-15 Sep 005/005-005/008-005/005
VI. Geomagnetic Activity Probabilities 13 Sep to 15 Sep
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 10% | 10% |
| Minor storm | 01% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 20% | 20% |
| Minor storm | 05% | 10% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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