Sighting Details
Report #9151
Filed by: unknown
WHEN
July 31, 1998, 4 a.m.
Duration: 1:00:00
WHERE
Grass Valley, CA
39.21916670° | -121.06000000°
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WHAT
Shape: Light
Description:
"Saw a light in sky. It did a strange turn. Heard a slow hum not like airplane. Hum lasted for over half an hour. Light reappeared"
