Viewing archive of Tuesday, 26 December 2006
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 2006 Dec 26 2204 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 2006IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z Solar activity was very low. No new regions were
numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
The geomagnetic field was at quiet levels. The greater than 2 MeV
electron flux at geosynchronous orbit was at high levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled with isolated active conditions
for 27 December due to a recurrent solar sector boundary crossing.
Predominately quiet conditions are expected for 28-29 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 075 Predicted 27 Dec-29 Dec 075/075/075 90 Day Mean 26 Dec 082
V. Geomagnetic A Indices
Observed Afr/Ap 25 Dec 004/006 Estimated Afr/Ap 26 Dec 005/005 Predicted Afr/Ap 27 Dec-29 Dec 012/015-005/005-005/005
VI. Geomagnetic Activity Probabilities 27 Dec to 29 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 10% | 10% |
| Minor storm | 15% | 05% | 05% |
| Major-severe storm | 05% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 35% | 15% | 15% |
| Minor storm | 20% | 05% | 05% |
| Major-severe storm | 10% | 01% | 01% |
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