Viewing archive of Sunday, 18 November 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 Nov 18 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 322 Issued at 2200Z on 18 Nov 2007IA. Analysis of Solar Active Regions and Activity from 17-2100Z to 18-2100Z Solar activity has been very low.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 17-2100Z to 18-2100Z
The geomagnetic field has been quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
forecast to be quiet for 19 November. A recurrent coronal hole high
speed stream is expected to rotate into a geoeffective position on
20 - 21 November creating unsettled conditions with the possibility
for isolated active periods for both those days.
III. Event Probabilities 19 Nov to 21 Nov
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 18 Nov 069 Predicted 19 Nov-21 Nov 069/069/069 90 Day Mean 18 Nov 068
V. Geomagnetic A Indices
Observed Afr/Ap 17 Nov 005/005 Estimated Afr/Ap 18 Nov 005/005 Predicted Afr/Ap 19 Nov-21 Nov 005/005-010/010-015/020
VI. Geomagnetic Activity Probabilities 19 Nov to 21 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 25% | 30% |
| Minor storm | 05% | 10% | 15% |
| Major-severe storm | 01% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 30% | 35% |
| Minor storm | 10% | 15% | 20% |
| Major-severe storm | 01% | 05% | 10% |
All times in UTC
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