Viewing archive of Sunday, 22 November 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 Nov 22 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 326 Issued at 2200Z on 22 Nov 2009IA. Analysis of Solar Active Regions and Activity from 21-2100Z to 22-2100Z Solar activity was very low. No flares occurred during
the past 24 hours. Region 1033 (N18W05) was the only spotted group
on the disk but appeared to have decayed to spotless plage by the
end of the period.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 21-2100Z to 22-2100Z
The geomagnetic field was quiet during the past 24 hours. Solar wind
speeds were somewhat elevated during the past 24 hours with
velocities ranging between 460-560 km/s. Nonetheless the
interplanetary magnetic field was generally weak (typically 3-4 nT)
and the fluctuations in the southward component, Bz, were also weak
(typically between +/- 3 nT).
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet for the next three days (23-25 November).
III. Event Probabilities 23 Nov to 25 Nov
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 22 Nov 076 Predicted 23 Nov-25 Nov 075/075/075 90 Day Mean 22 Nov 072
V. Geomagnetic A Indices
Observed Afr/Ap 21 Nov 006/008 Estimated Afr/Ap 22 Nov 005/005 Predicted Afr/Ap 23 Nov-25 Nov 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 23 Nov to 25 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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