Viewing archive of Saturday, 26 December 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 Dec 26 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 360 Issued at 2200Z on 26 Dec 2009IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z Solar activity was very low. New Region 1039 (S26E45)
was numbered today as a three-spot, Bxo-beta spot group. During the
period, several low-level B-class flares occurred from Region 1039.
The largest of these was a B4.8 at 1657Z.
IB. Solar Activity Forecast
Solar activity is expected to be very
low, with a slight chance for an isolated C-class flare.
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet for the next three days (27-29 December).
III. Event Probabilities 27 Dec to 29 Dec
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 26 Dec 076 Predicted 27 Dec-29 Dec 076/077/078 90 Day Mean 26 Dec 074
V. Geomagnetic A Indices
Observed Afr/Ap 25 Dec 003/002 Estimated Afr/Ap 26 Dec 002/005 Predicted Afr/Ap 27 Dec-29 Dec 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 27 Dec to 29 Dec
| 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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