Logan, Utah UFO Sighting (September 8, 1947) — FBI Files (D3P169 var 2)
In September 1947, two couples in Logan, Utah, reported observing a dozen white, pigeon-sized objects flying in formation at high speeds.
Background
On September 8, 1947, in Logan, Utah, U.S. government investigators recorded an unidentified-object incident later released to the public on May 8, 2026, as part of the Presidential Unsealing and Reporting System for UAP Encounters (PURSUE). The incident occurred during a period of intense public and governmental preoccupation with aerial phenomena. This specific sighting was part of the first wave of “flying saucer” reports that swept the United States following the Kenneth Arnold sighting in June 1947 and the Roswell incident in July 1947. During this era, the sudden influx of reports led to widespread speculation regarding both extraterrestrial visitors and secret military technology.
The geographic setting of Logan, situated in the Cache Valley of northern Utah, placed the incident within a region characterized by clear mountain skies and significant visibility. At the time, the Federal Bureau of Investigation maintained a systematic approach to monitoring such reports. The case was filed with the FBI, and the Bureau’s standing protocols for the protection of vital installations dictated that field offices in Knoxville, Albuquerque, Los Angeles, and other locations route UFO reports to headquarters. This administrative structure ensured that any aerial phenomenon that could potentially threaten national security or sensitive infrastructure was centralized for federal review.
What the document records
The primary documentation regarding the event describes a visual encounter occurring on the evening of September 8, 1947. The report originated from two couples who were engaged in a game of bridge when they observed unusual activity in the night sky. According to the records, the observers witnessed multiple groups of flying objects moving through the atmosphere. The witnesses estimated the presence of approximately a dozen objects traveling in a coordinated formation at an altitude of two to three thousand feet.
The physical characteristics of these objects were noted with specific detail. The objects were described as being white in color and roughly the size of a pigeon. A significant detail provided in the report was the manner of their propulsion; the objects were observed moving at speeds greater than those of birds, yet they exhibited no visible wing movement. While the released document provides these specific visual descriptors, the total number of witnesses involved in the sighting is not specified in the official record.
Type of case
The Logan incident is classified as a visual sighting reported by ground observers. This category of encounter is common in the historical record of the 1940s, where stationary observers on the ground provided descriptions of transient aerial phenomena.
Status
All records released under the PURSUE program are designated as unresolved by the All-domain Anomaly Resolution Office (AARO) by default. The federal government has maintained a position of neutrality regarding the nature of the objects seen over Logan, having neither concluded that the events were anomalous nor confirmed that they were conventional. The possibility of either remains open within the official documentation.
When analyzing sightings from this mid-century period, researchers often consider various conventional candidates. These include experimental aircraft developed during the early stages of the Cold War, or weather balloons, specifically those associated with the Project Mogul series active in the late 1940s. Other potential explanations involve atmospheric optical phenomena, such as sundogs or lenticular clouds, which can create the illusion of moving objects. Additionally, astronomical objects like Venus, the Moon, or meteors appearing near the horizon are frequently cited as possible sources for reports of bright, moving lights in the night sky.