Viewing archive of Thursday, 29 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 29 2204 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 363 Issued at 2200Z on 29 Dec 2005IA. Analysis of Solar Active Regions and Activity from 28-2100Z to 29-2100Z Activity was at low levels. Region 843 (N12E27)
produced the largest flare of the period, a C1/Sf event that
occurred at 28/2238Z. Region 844 (S15W59) is a Cao beta spot group
that was numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be at
low levels.
IIA. Geophysical Activity Summary 28-2100Z to 29-2100Z
The geomagnetic field was at quiet to unsettled levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at predominantly unsettled levels. Isolated active
periods may be possible on 30 December due to a favorably positioned
coronal hole. Quiet to unsettled levels are expected on 31 December
and 01 January as the coronal hole moves out geoeffective position.
III. Event Probabilities 30 Dec to 01 Jan
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 29 Dec 090 Predicted 30 Dec-01 Jan 090/090/085 90 Day Mean 29 Dec 084
V. Geomagnetic A Indices
Observed Afr/Ap 28 Dec 013/014 Estimated Afr/Ap 29 Dec 010/012 Predicted Afr/Ap 30 Dec-01 Jan 008/010-005/010-005/008
VI. Geomagnetic Activity Probabilities 30 Dec to 01 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 10% | 10% | 05% |
| Major-severe storm | 05% | 05% | 01% |
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