[Prelimaurora] PRELIMINARY Daily Auroral Activity Report for 19 September

[Preliminary sightings of auroral activity]

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                        DAILY SUMMARY OF AURORAL ACTIVITY

                                19 SEPTEMBER 2006

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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)

0605 UTC - (N64.08 W145.58) - Delta Junction, AK 
           Comments: Saw that there was a decent solar wind magnitude all day
           above 600 km/s and basically planned on going outside an hour after
           sunset.  Actually probably around 0545 UTC, I could see a faint
           curtain in between some cirrus, but it was hard to tel due to
           twilight conditions.  Between 0605-0615 (10pm local), there was a
           faint greenish diffuse glow 20 degs to the northeast and this glow
           grew and grew until it was a curtain that covered a east to north
           portion of the horizon.  Beams started to appear (as if someone
           turned a spotlight on in the distance out of the east) and one
           large beam in particular that stretched across was zenithal. All of
           a sudden around 0630 UTC, the beams started to break up into
           smaller sections.  In some of the digital pics I can see a purple
           edge to the green.  Then after 0710 UTC, the activity diminished to
           a diffuse glow over northern horizon with a few localized pulses
           appearing and disappearing overhead underneath the  milky way! 
 

**  End of Aurora Report  **