Viewing archive of Friday, 10 December 2010
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 2010 Dec 10 2215 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
:::::::::: CORRECTED COPY :::::::::: SDF Number 344 Issued at 2200Z on 10 Dec 2010IA. Analysis of Solar Active Regions and Activity from 09-2100Z to 10-2100Z Solar activity was at very low levels. No significant
changes were noted on the disk or limb.
IB. Solar Activity Forecast
Solar activity is expected to remain
at very low levels for the next three days (11 - 13 December).
IIA. Geophysical Activity Summary 09-2100Z to 10-2100Z
The geomagnetic field was at quiet levels. Observations from the ACE
spacecraft indicated a steady change in the solar wind magnetic
field structure from positive (away) to negative (toward) at about
10/0500Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at mostly unsettled levels with isolated active
periods for the next three days (11 - 13 December) due to recurrent
coronal hole high speed stream effects.
III. Event Probabilities 11 Dec to 13 Dec
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 10 Dec 088 Predicted 11 Dec-13 Dec 088/088/089 90 Day Mean 10 Dec 083
V. Geomagnetic A Indices
Observed Afr/Ap 09 Dec 000/002 Estimated Afr/Ap 10 Dec 006/008 Predicted Afr/Ap 11 Dec-13 Dec 010/010-010/010-008/008
VI. Geomagnetic Activity Probabilities 11 Dec to 13 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 15% |
| Minor storm | 05% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 20% |
| Minor storm | 10% | 10% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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