Viewing archive of Sunday, 30 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 30 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 242 Issued at 2200Z on 30 Aug 2009IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z Solar activity was very low. No spots and no flares
were observed on the visible disk.
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 at quiet to minor storm conditions. The
solar wind increased from 350 to 450 km/s. The Bz varied from +10 to
-10 through the UT day. This activity was due to the onset of a
southern coronal hole high speed stream becoming geoeffective.
IIB. Geophysical Activity Forecast
The geomagnetic field will be
quiet to unsettled with isolated periods of active conditions
possible on day one (31 August) and mostly quiet for the remainder
of the forecast period (1 - 2 September).
III. Event Probabilities 31 Aug to 02 Sep
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Aug 067 Predicted 31 Aug-02 Sep 068/068/068 90 Day Mean 30 Aug 068
V. Geomagnetic A Indices
Observed Afr/Ap 29 Aug 002/002 Estimated Afr/Ap 30 Aug 012/015 Predicted Afr/Ap 31 Aug-02 Sep 007/010-005/005-005/005
VI. Geomagnetic Activity Probabilities 31 Aug to 02 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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