Declassified UFO / UAP Document
Project 10073 Record — Sergeant Bluff, Iowa, 31 July 1966
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AI-Generated Summary
A 30-minute UFO sighting in Sergeant Bluff, Iowa, on 31 July 1966 was officially identified by the Air Force as a weather balloon released by the local U.S. Weather Bureau.
This document is a Project 10073 record and an associated Air Force incoming message regarding a UFO sighting reported on 31 July 1966 in Sergeant Bluff, Iowa. A single witness observed an object for approximately 30 minutes. The witness described the object as moving in a northerly direction, starting and stopping, circling to the left, and eventually rising and disappearing to the north. The object was reported to have alternating white, yellow, red, and green colors, but no sound was heard. The report includes detailed meteorological data for the time of the incident, noting clear skies and a large temperature inversion at higher altitudes. The official conclusion reached by the 30 Air Division Intelligence Officer, 1st Lt. Thomas W. Noy, was that the object was a weather balloon released by the U.S. Weather Bureau from the administrative office at the Sioux City Municipal Airport in Sergeant Bluff, Iowa.
THIS OFFICER FEELS THAT THE OBJECT SIGHTED WAS THE WEATHER BALLOON RELEASED BY THE U.S. WEATHER BUREAU LOCATED IN SERGEANT BLUFF, IOWA.
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Official Assessment
BALLOON
The object sighted was determined to be a weather balloon released by the U.S. Weather Bureau at the Sioux City Municipal Airport in Sergeant Bluff, Iowa.
Key Persons
- John R. LuedkeA2C, 4644 SPT SQ, Communications Center
- Thomas W. Noy1st Lt, USAF, Acting 30 Air Division Intelligence Officer