Viewing archive of Friday, 23 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 23 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 327 Issued at 2200Z on 23 Nov 2007IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z Solar activity was very low.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 22-2100Z to 23-2100Z
The geomagnetic field was quiet to active with minor storm conditions
at high latitudes. Solar wind observations from the ACE spacecraft
indicate a continued influence of the coronal hole high speed
stream. Solar wind speeds began the past 24 hour period at 620 km/s
and are currently averaging around 550 km/s.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled for 24-26 November.
III. Event Probabilities 24 Nov to 26 Nov
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 23 Nov 070 Predicted 24 Nov-26 Nov 070/070/070 90 Day Mean 23 Nov 068
V. Geomagnetic A Indices
Observed Afr/Ap 22 Nov 006/013 Estimated Afr/Ap 23 Nov 010/010 Predicted Afr/Ap 24 Nov-26 Nov 008/010-008/015-008/010
VI. Geomagnetic Activity Probabilities 24 Nov to 26 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 05% | 05% | 05% |
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