Viewing archive of Sunday, 28 October 2007
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 2007 Oct 28 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 301 Issued at 2200Z on 28 Oct 2007IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z Solar activity was very low.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 27-2100Z to 28-2100Z
The geomagnetic field was quiet to unsettled. The greater than 2 MeV
electron flux at geosynchronous orbit was at high levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled with isolated active periods for
29 October due to the possible influence from a recurrent coronal
hole. Quiet to unsettled conditions are expected for 30 October,
with mostly quiet levels on 31 October as the coronal hole high
speed stream subsides.
III. Event Probabilities 29 Oct to 31 Oct
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 28 Oct 068 Predicted 29 Oct-31 Oct 067/067/067 90 Day Mean 28 Oct 068
V. Geomagnetic A Indices
Observed Afr/Ap 27 Oct 008/010 Estimated Afr/Ap 28 Oct 008/010 Predicted Afr/Ap 29 Oct-31 Oct 010/015-008/008-005/005
VI. Geomagnetic Activity Probabilities 29 Oct to 31 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 10% |
| Minor storm | 15% | 10% | 05% |
| Major-severe storm | 05% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 15% | 10% |
| Minor storm | 20% | 10% | 05% |
| Major-severe storm | 05% | 01% | 01% |
All times in UTC
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