Michigan, November 1951November 1951

On the evening of November 24, 1951, seven people scattered across four locations in southern Michigan reported seeing a large, bright object moving rapidly through the sky. The witnesses included military personnel at Selfridge Air Force Base, a soldier on leave near Battle Creek, civilian airport tower operators, and an experienced airline captain. All described the object as either cigar or football shaped, white or bluish-white in color. It moved horizontally at extreme speed, at what appeared to be a low altitude of 500 to 4,000 feet, depending on the observer's location and distance. No sound accompanied the object. Each sighting lasted only five to six seconds.

The object appeared to travel from northeast to southwest in a straight line. Time stamps from the separate reports spanned about five minutes, which investigators attributed to errors in the observers' watches. Assuming the Selfridge base clock was most accurate, the actual time of passage was estimated at roughly 6:20 p.m. local time. The object's apparent path suggested it traveled over Ontario, Canada, or upper New York State after leaving Michigan.

Investigators checked several potential explanations with negative results. No jet aircraft were known to be in the area. Radar stations detected no unidentified electronic returns matching the object. Michigan University Observatory reported no meteor activity or aurora phenomena for the time period. General Woods Corporation in Minneapolis confirmed it had released only one experimental balloon on November 24, and that balloon landed well before the sighting time. Weather was clear and exceptional at all observation points.

The file's official conclusion states that the object was "a large meteor-like object that probably passed over Ontario, Canada, or upper New York State." The investigators noted that although a more precise location might be possible by collecting additional reports from Canada, it would still not definitively identify the object unless it had been observed by trained astronomers. A later note indicated that the unidentified object seen over southern Michigan on November 24, 1951, was suspected to be "very large meteor or fire ball," with investigation continuing to further substantiate that conclusion.

The complete case file is reproduced below as held by the National Archives, spanning 18 pages.