Merced, California UFO Sighting (April 4, 1949) — FBI Files
On April 4, 1949, an unidentified object was observed flying at low altitude over Merced, California, as documented in released FBI files.
Background
On April 4, 1949, in Merced, California, 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 heightened public and governmental interest in aerial phenomena. This era was defined by the first wave of “flying saucer” reports that swept the United States following the Kenneth Arnold sighting of June 1947 and the Roswell incident of July 1947. During this post-war period, the emergence of advanced aerospace technology and the early stages of the Cold War contributed to a climate of intense scrutiny regarding any unrecognized objects in the national airspace.
The geographic location of the sighting, Merced, sits within California’s Central Valley, a region characterized by vast agricultural expanses and relatively low light pollution during the mid-twentieth century. Such environments historically provided clear lines of sight for observers monitoring the night sky. The case was filed with the Federal Bureau of Investigation, whose Knoxville, Albuquerque, Los Angeles, and other field offices routed UFO reports to headquarters under the Bureau’s standing protocols for the protection of vital installations. This bureaucratic process highlights how domestic law enforcement agencies were integrated into the monitoring of unidentified aerial phenomena, treating such sightings as potential threats to national security or infrastructure.
The Incident
On the night of April 4, 1949, William Parrott observed a strange object while standing near his home in Merced, California. The observation began with an auditory component, as Parrott first noticed a clicking noise before the visual encounter commenced. He subsequently saw a solid mass in the sky, which he estimated to be approximately four or five feet in diameter. The object was flying at a low altitude, estimated to be less than 1000 feet. As the object moved in a westerly or northwesterly direction, it appeared to block out the light of the stars, creating a visual occlusion in the night sky.
The released documentation does not specify the total number of witnesses present during the event. The primary evidence for the incident rests on the written account provided to federal investigators, which captures the specific sensory details of the encounter.
Documentation and Verbatim Records
The official file contains specific testimony regarding the timing and nature of the sighting. The record states, “I had occasion to step from my home…on the night of April 4, 1949, at approximately 2220.” The observer noted the physical impact of the object’s movement on the celestial background, stating, “After about ten seconds…an object was observed blanking out stars…” Regarding the physical dimensions of the phenomenon, the file notes, “Its size can be estimated as four or five feet in diameter…”
Classification and Status
This case is classified as a visual sighting reported by ground or air observers. Within the broader context of mid-century aerial phenomena, the Merced sighting shares characteristics with other low-altitude, small-scale object reports that were often difficult to categorize using the technology of the time.
All records released under the PURSUE program are designated unresolved by the All-domain Anomaly Resolution Office (AARO) by default. The federal government has not concluded that the events were anomalous, has not concluded that they were conventional, and has not ruled out either possibility. Conventional candidates for sightings of this period include experimental aircraft, weather balloons, particularly the Project Mogul series in the late 1940s, and atmospheric optical phenomena such as sundogs and lenticular clouds. Additionally, astronomical objects including Venus, the Moon, and meteors near the horizon are frequently considered as potential explanations for such reports.