Viewing archive of Thursday, 9 October 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 Oct 09 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 283 Issued at 2200Z on 09 Oct 2008IA. Analysis of Solar Active Regions and Activity from 08-2100Z to 09-2100Z Solar activity was very low.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 08-2100Z to 09-2100Z
The geomagnetic field was quiet. The greater than 2 MeV electron
flux at geosynchronous orbit was at high levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet levels for 10-11 October. Unsettled to
active conditions with isolated minor storm levels at high latitudes
are expected for 12 October due to a recurrent coronal hole high
speed stream.
III. Event Probabilities 10 Oct to 12 Oct
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 09 Oct 069 Predicted 10 Oct-12 Oct 068/068/068 90 Day Mean 09 Oct 067
V. Geomagnetic A Indices
Observed Afr/Ap 08 Oct 002/002 Estimated Afr/Ap 09 Oct 002/002 Predicted Afr/Ap 10 Oct-12 Oct 005/005-005/005-012/015
VI. Geomagnetic Activity Probabilities 10 Oct to 12 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 30% |
| Minor storm | 01% | 01% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 40% |
| Minor storm | 01% | 01% | 20% |
| Major-severe storm | 01% | 01% | 05% |
All times in UTC
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