Viewing archive of Wednesday, 29 October 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 Oct 29 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 303 Issued at 2200Z on 29 Oct 2008IA. Analysis of Solar Active Regions and Activity from 28-2100Z to 29-2100Z Solar activity was very low. No flares were observed.
The visible disk was spotless.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 28-2100Z to 29-2100Z
Geomagnetic field activity ranged from quiet to active levels. ACE
solar wind measurements indicated Earth remained under the influence
of a recurrent coronal hole high-speed stream. Velocities gradually
increased from approximately 475 to 740 km/sec during the period.
IIB. Geophysical Activity Forecast
Geomagnetic field activity is
expected to range from quiet to active levels during days 1 - 2 (30
- 31 October). Mostly quiet levels are expected on day 3 (01
November) as the high-speed stream subsides.
III. Event Probabilities 30 Oct to 01 Nov
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 29 Oct 067 Predicted 30 Oct-01 Nov 067/068/069 90 Day Mean 29 Oct 067
V. Geomagnetic A Indices
Observed Afr/Ap 28 Oct 005/004 Estimated Afr/Ap 29 Oct 012/012 Predicted Afr/Ap 30 Oct-01 Nov 010/015-008/010-005/005
VI. Geomagnetic Activity Probabilities 30 Oct to 01 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 10% |
| Minor storm | 10% | 10% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 15% |
| Minor storm | 15% | 15% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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