Viewing archive of Sunday, 10 August 2008
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 2008 Aug 10 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 223 Issued at 2200Z on 10 Aug 2008IA. Analysis of Solar Active Regions and Activity from 09-2100Z to 10-2100Z Solar activity was very low. The visible solar disk
remains spotless. No flares were observed during the past 24 hours.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 09-2100Z to 10-2100Z
The geomagnetic field ranged from quiet to minor storm conditions.
Observations measured at the ACE spacecraft show a continued
influence of the recurrent coronal hole high speed solar wind
stream. Solar wind speed has averaged around 630 km/s with Bz
fluctuations from +4 nT to -7 nT.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet to unsettled conditions for day one (11
August) of the forecast. Predominately quiet levels are expected
for days two and three (12-13 August) as the high speed stream
becomes less geoeffective.
III. Event Probabilities 11 Aug to 13 Aug
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 10 Aug 066 Predicted 11 Aug-13 Aug 066/066/066 90 Day Mean 10 Aug 067
V. Geomagnetic A Indices
Observed Afr/Ap 09 Aug 016/018 Estimated Afr/Ap 10 Aug 010/010 Predicted Afr/Ap 11 Aug-13 Aug 007/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 11 Aug to 13 Aug
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 05% | 05% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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