Unknown over Elk Mountain, WY
A witness account on file, unevaluated. Most of the archive rests here, and honestly so.
The report, as filed
The sky was partly cloudy, and the temperature was about 36 degrees. I was headed east on I80 just north of elk mountain Wyoming about 515am. When I looked southeast towards elk mountain, I notice a dark cloud over it. The second time I looked, I seen 3 to 4 purple or blue flashes that flashed within the cloud in a sequence that lasted about a second which illuminated the cloud to a greenish color. I've never seen anything like this before. The event startled me so much I almost lost control of my vehicle.
Held as-reported from National UFO Reporting Center (record NUFORC #132708). Witness text is preserved verbatim, including its spelling; nothing is edited beyond formatting.
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Routed to: Federal Aviation Administration · records window 2017-02-16 → 2017-03-05