Viewing archive of Saturday, 6 September 2008
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 2008 Sep 06 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 250 Issued at 2200Z on 06 Sep 2008IA. Analysis of Solar Active Regions and Activity from 05-2100Z to 06-2100Z Solar activity was very low. No flares occurred during
the past 24 hours and the solar disk continues to be spotless.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 05-2100Z to 06-2100Z
The geomagnetic field was mostly quiet with some isolated unsettled
to active periods. Solar wind speed as observed by ACE continued to
be elevated throughout the day, with values ranging between 480 to
560 km/s. The greater than 2 MeV electron flux at geosynchronous
orbit reached high levels during the last 24 hours.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled for the first day (07 September)
and is expected to be predominantly quiet for the second and third
days (08-09 September).
III. Event Probabilities 07 Sep to 09 Sep
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 06 Sep 066 Predicted 07 Sep-09 Sep 066/066/066 90 Day Mean 06 Sep 066
V. Geomagnetic A Indices
Observed Afr/Ap 05 Sep 007/007 Estimated Afr/Ap 06 Sep 010/010 Predicted Afr/Ap 07 Sep-09 Sep 007/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 07 Sep to 09 Sep
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 15% | 10% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 35% | 20% | 05% |
| Minor storm | 15% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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