Viewing archive of Monday, 20 November 2006
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 2006 Nov 20 2204 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 324 Issued at 2200Z on 20 Nov 2006IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z Solar activity was very low. A CME was observed, in
LASCO imagery, off the east limb at 20/1830 UTC. This event is
considered to be backsided and not expected to be geoeffective.
IB. Solar Activity Forecast
Solar activity is expected to be very
low with isolated C-flares possible from Region 923 (S06W88), until
it rotates around the west limb on 21 November.
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet on 21 and 22 November. On 23 November, quiet to
active conditions are possible as a recurrent coronal hole high
speed stream is expected to move into a geoeffective position.
III. Event Probabilities 21 Nov to 23 Nov
| Class M | 05% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 20 Nov 081 Predicted 21 Nov-23 Nov 075/070/070 90 Day Mean 20 Nov 079
V. Geomagnetic A Indices
Observed Afr/Ap 19 Nov 002/003 Estimated Afr/Ap 20 Nov 003/003 Predicted Afr/Ap 21 Nov-23 Nov 003/005-003/005-008/015
VI. Geomagnetic Activity Probabilities 21 Nov to 23 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 20% |
| Minor storm | 05% | 05% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 35% |
| Minor storm | 05% | 05% | 15% |
| Major-severe storm | 01% | 01% | 05% |
All times in UTC
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