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National UFO Reporting Center
Sighting Report
Occurred : 5/15/2013 15:30 (Entered as : 05/15/13 15:30)
Reported: 12/25/2013 9:31:21 PM 21:31
Posted: 1/10/2014
Location: Denver, CO
Shape: Circle
Duration:1 minute
Silver circle with black triangle ahead of storm

There was one flat disk object. It flew directly overhead. From below, looking up, it was a silver/grey circle with a large black equilateral triangle across the center reaching its points to the edges of the circle. There was also a pattern of a few simple black lines across the grey area. It was traveling low and fast, just at the height and ahead of a thunderstorm rolling in. It appeared to either be being pushed by or trying to outrun the thunderhead. It was very easy and clear to see and I watched it for about a minute as it flew off into the distance.

Observer is a young 30s, mother, professional teacher with no previous UFO experiences. I'm just curious what it was because it was so obvious and clear. I assumed it was something to monitor the storm, but can't find info on any weather instruments that match the description.

((NUFORC Note: Witness indicates that the date of the sighting is approximate. PD))