12 April 1977 10:37
Oxelosund, Sweden
Shrill whistling sound. UFO hovered four seconds. Disc diameter four m, had antenna with sphere on top. When UFO departed strong noise was heard causing windows to vibrate. Left to southeast.
A hovering flying disc was observed. One brown disc, about 20 feet across, around 300 feet away, was observed in overcast weather by one female witness, an experienced observor, in a city for six seconds (Lindmark; Mattsson). A whistling sound was heard.
Hynek rating: DO: Daylight Objects
Vallee rating: FB1: A simple sighting of a UFO traveling in a straight line across the sky.
Other sightings in this areaGoogle map of this location.
Sources:
- 43 - 500 - 625 - 676
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