Viewing archive of Tuesday, 25 August 2009
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 2009 Aug 25 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 237 Issued at 2200Z on 25 Aug 2009IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z Solar activity was very low. No spotted regions were
visible on the disk, and no flares were observed.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
The geomagnetic field was quiet. The wind speed at ACE continues to
decline through the period (approx. 330km/sec).
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet for the forecast period (26-28 August).
III. Event Probabilities 26 Aug to 28 Aug
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 25 Aug 067 Predicted 26 Aug-28 Aug 068/068/068 90 Day Mean 25 Aug 068
V. Geomagnetic A Indices
Observed Afr/Ap 24 Aug 001/003 Estimated Afr/Ap 25 Aug 005/005 Predicted Afr/Ap 26 Aug-28 Aug 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 26 Aug to 28 Aug
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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