[Prelimaurora] PRELIMINARY Daily Auroral Activity Report for 18 December

[Preliminary sightings of auroral activity]

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                        DAILY SUMMARY OF AURORAL ACTIVITY

                                18 DECEMBER 2007

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SYNOPTICAL INFORMATION
----------------------

     Auroral activity is now summarized by the presence (or absense) of
ground-based sighting reports. Forecast conditions can be inferred through
the geomagnetic activity forecast section of the daily summary report of
solar and geophysical activity. Near real-time conditions can be determined
at: http://www.spacew.com/aurora/forumnotes.html. Current information
on CME impact predictions can be found at: http://www.spacew.com/cme.


               SUMMARY OF GROUND-BASED AURORAL ACTIVITY SIGHTINGS
               --------------------------------------------------

               (Sightings are preliminary and may be unverified)

0800 UTC - (N59.75 W151.75) - Homer-Anchor Point, Alaska 
           Comments: Just after 08:00 UT a low arc rapidly appeared where none
           was before filling in from east to west. Arc remained at about 10
           degrees alt.for the next four hours fading and brightening several
           times.  Modest breakup around 11:20 and pulsing, motled sky after
           11:30 to about 40 degrees alt. 
 

**  End of Aurora Report  **