Viewing archive of Monday, 31 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 31 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 243 Issued at 2200Z on 31 Aug 2009IA. Analysis of Solar Active Regions and Activity from 30-2100Z to 31-2100Z Solar activity was very low. New Region 1025 (N17E33)
was assigned today. No flares were observed.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 30-2100Z to 31-2100Z
The geomagnetic field was quiet to unsettled. The unsettled
conditions were due to a coronal hole high speed stream.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet on days 1 and 2 (1 - 2 September). Day 3 (3
September) is expected to increase to quiet to unsettled levels due
to a recurrent coronal hole high speed stream.
III. Event Probabilities 01 Sep to 03 Sep
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 31 Aug 068 Predicted 01 Sep-03 Sep 068/068/068 90 Day Mean 31 Aug 068
V. Geomagnetic A Indices
Observed Afr/Ap 30 Aug 012/019 Estimated Afr/Ap 31 Aug 007/007 Predicted Afr/Ap 01 Sep-03 Sep 005/005-005/005-008/010
VI. Geomagnetic Activity Probabilities 01 Sep to 03 Sep
| 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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