Viewing archive of Tuesday, 11 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 11 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 254 Issued at 2200Z on 11 Sep 2007IA. Analysis of Solar Active Regions and Activity from 10-2100Z to 11-2100Z Solar activity continues at very low levels. The
visible solar disk remains spotless.
IB. Solar Activity Forecast
Solar activity is expected to continue
at very low levels.
IIA. Geophysical Activity Summary 10-2100Z to 11-2100Z
The geomagnetic field continues at quiet levels. The greater than 2
MeV electron flux at geosynchronous orbit was at high levels again
today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet on 12 and 13 September. Occasional unsettled
periods are possible on 14 September.
III. Event Probabilities 12 Sep to 14 Sep
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 11 Sep 066 Predicted 12 Sep-14 Sep 067/067/067 90 Day Mean 11 Sep 070
V. Geomagnetic A Indices
Observed Afr/Ap 10 Sep 002/002 Estimated Afr/Ap 11 Sep 002/003 Predicted Afr/Ap 12 Sep-14 Sep 005/005-005/005-005/008
VI. Geomagnetic Activity Probabilities 12 Sep to 14 Sep
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 10% |
| Minor storm | 01% | 01% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 20% |
| Minor storm | 05% | 05% | 10% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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