Viewing archive of Friday, 30 September 2005
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 2005 Sep 30 2204 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 273 Issued at 2200Z on 30 Sep 2005IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z Solar activity was very low. Region 812 (S03W20) was
quiescent. No new regions were numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic field was quiet to active. Solar wind speed has
increased steadily during the day from about 360 km/s to about 420
km/s.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet to unsettled levels.
III. Event Probabilities 01 Oct to 03 Oct
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Sep 072 Predicted 01 Oct-03 Oct 070/070/075 90 Day Mean 30 Sep 092
V. Geomagnetic A Indices
Observed Afr/Ap 29 Sep 005/006 Estimated Afr/Ap 30 Sep 007/012 Predicted Afr/Ap 01 Oct-03 Oct 008/015-008/012-005/010
VI. Geomagnetic Activity Probabilities 01 Oct to 03 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 15% |
| Minor storm | 10% | 10% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 25% | 20% |
| Minor storm | 20% | 15% | 15% |
| Major-severe storm | 05% | 05% | 05% |
All times in UTC
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