Viewing archive of Monday, 26 December 2005
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 2005 Dec 26 2203 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 2005IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z Solar activity decreased to very low levels. The six
spotted regions on the visible disk were limited to minor B-class
activity. Region 843 (N12E67) was numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be at
very low to low levels.
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
The geomagnetic field was at quiet levels today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet to unsettled levels on 27 December. A
recurrent high speed coronal hole stream is expected to become
geoeffective on 28 December and continue through 29 December.
Unsettled to active conditions with isolated high latitude minor
storm periods are expected to accompany the high speed stream.
III. Event Probabilities 27 Dec to 29 Dec
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 26 Dec 093 Predicted 27 Dec-29 Dec 095/095/100 90 Day Mean 26 Dec 084
V. Geomagnetic A Indices
Observed Afr/Ap 25 Dec 005/006 Estimated Afr/Ap 26 Dec 002/008 Predicted Afr/Ap 27 Dec-29 Dec 010/010-012/015-012/015
VI. Geomagnetic Activity Probabilities 27 Dec to 29 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 25% | 25% |
| Minor storm | 05% | 10% | 10% |
| Major-severe storm | 01% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 35% | 35% |
| Minor storm | 10% | 15% | 15% |
| Major-severe storm | 05% | 10% | 10% |
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