Viewing archive of Thursday, 23 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 23 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 357 Issued at 2200Z on 23 Dec 2010IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z Solar activity was very low. A partial halo CME was
observed off the southwest quadrant of the sun on the SOHO/LASCO C2
imagery around 23/0736Z. The event was also observed on C3 and
STEREO ahead/behind COR2 imagery. The source of the event is a
possible disappearing filament just transiting around the visible
disk in the southwest.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 22-2100Z to 23-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet for day one (24 December). Quiet to slightly
unsettled levels are expected for day two (25 December) due to a
solar sector boundary crossing. Mostly quiet conditions are
expected to return for day three (26 December).
III. Event Probabilities 24 Dec to 26 Dec
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 23 Dec 080 Predicted 24 Dec-26 Dec 078/078/080 90 Day Mean 23 Dec 083
V. Geomagnetic A Indices
Observed Afr/Ap 22 Dec 001/000 Estimated Afr/Ap 23 Dec 001/005 Predicted Afr/Ap 24 Dec-26 Dec 005/005-007/007-005/005
VI. Geomagnetic Activity Probabilities 24 Dec to 26 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 10% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 15% | 05% |
| Minor storm | 01% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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