Viewing archive of Tuesday, 30 December 2008
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 2008 Dec 30 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 365 Issued at 2200Z on 30 Dec 2008IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z Solar activity was very low with no flares observed.
The visible disk remained spotless.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled all three days of the forecast
period (31 December - 02 January) due to a recurrent coronal hole
high speed stream that will rotate into a geoeffective position.
III. Event Probabilities 31 Dec to 02 Jan
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Dec 069 Predicted 31 Dec-02 Jan 070/070/070 90 Day Mean 30 Dec 069
V. Geomagnetic A Indices
Observed Afr/Ap 29 Dec 001/000 Estimated Afr/Ap 30 Dec 001/005 Predicted Afr/Ap 31 Dec-02 Jan 005/008-008/010-012/012
VI. Geomagnetic Activity Probabilities 31 Dec to 02 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 15% | 25% |
| Minor storm | 01% | 05% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 25% | 25% |
| Minor storm | 05% | 05% | 10% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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