Viewing archive of Wednesday, 26 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 26 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 238 Issued at 2200Z on 26 Aug 2009IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z Solar activity was very low. No flares were detected.
The visible disk was spotless.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
Geomagnetic field activity was at mostly quiet levels. One isolated
unsettled period was observed between 26/0000 - 0300Z.
IIB. Geophysical Activity Forecast
Geomagnetic field activity is
expected to be quiet to unsettled on days one and two (27 - 28
August), due to effects from a coronal hole. Quiet conditions are
expected on day three (29 August).
III. Event Probabilities 27 Aug to 29 Aug
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 26 Aug 067 Predicted 27 Aug-29 Aug 068/068/068 90 Day Mean 26 Aug 068
V. Geomagnetic A Indices
Observed Afr/Ap 25 Aug 002/003 Estimated Afr/Ap 26 Aug 005/005 Predicted Afr/Ap 27 Aug-29 Aug 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 27 Aug to 29 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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