Viewing archive of Tuesday, 27 October 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 Oct 27 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 300 Issued at 2200Z on 27 Oct 2009IA. Analysis of Solar Active Regions and Activity from 26-2100Z to 27-2100Z Solar activity was low. Region 1029 (N15W45) produced
several C-class events, the largest being a C 1.7 at 0924Z.
IB. Solar Activity Forecast
Solar activity is expected to be low.
C-class events are expected from Region 1029.
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
Geomagnetic field activity was quiet.
IIB. Geophysical Activity Forecast
Geomagnetic field activity is
expected to be quiet.
III. Event Probabilities 28 Oct to 30 Oct
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 27 Oct 082 Predicted 28 Oct-30 Oct 082/082/078 90 Day Mean 27 Oct 069
V. Geomagnetic A Indices
Observed Afr/Ap 26 Oct 003/003 Estimated Afr/Ap 27 Oct 005/005 Predicted Afr/Ap 28 Oct-30 Oct 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 28 Oct to 30 Oct
| 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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