Tampa, FloridaJune 1949

On the evening of June 5, 1949, a bright object trailing white smoke appeared in the sky over Tampa and spread across central Florida, drawing thousands of eyewitnesses and dozens of inquiries to police, weather stations, and newspapers. The phenomenon became visible around 1945 hours (7:45 p.m.) and the trail remained visible for about 25 to 30 minutes, though the object itself disappeared more quickly. Multiple observers across a region stretching roughly 800 miles from Key West to St. Simon's Island, Georgia, reported seeing the event.

Witnesses gave varying but overlapping descriptions. Navy personnel at Miami said the object appeared as a "ball of fire" traveling in a straight line before vanishing behind clouds. They saw the trail form a shape like the letter Z, composed of white smoke that hung in the air without dissipating. Weather Bureau forecasters in Miami described it as "very brilliant and somewhat smaller than a full moon," and said it left a "luminous, weaving trail" that "fell vertically" before the object lit up the sky to the northwest. From Tampa, observers initially thought they were watching a falling airplane, given the smoke trail. The local Tampa Morning Tribune quoted authorities at MacDill Air Force Base who said the object was probably a meteor traveling at tremendous altitude and speed over the Cedar Keys area, roughly 50 to 60 miles distant from observers, which would explain the great length of the trail.

However, military observers on the ground near MacDill rejected the meteor conclusion. An air traffic controller at Tampa's International Airport watched the phenomenon for about 40 minutes and stated his belief that no meteor could account for what he saw. A captain stationed at MacDill, observing from two miles north of the base, described a spiral condensation trail that did not follow a regular pattern and seemed to occur at multiple altitudes. He reported seeing a mirror like reflection flash from part of the trail and noted that the object, visible for eight minutes and appearing about one inch in diameter from his position, seemed to be "spinning or spiraling towards the earth." Two minutes after the flash of light, the object disappeared about 15 degrees above the horizon. Ten aircrew members of the 307th Bombardment Wing, all eyewitnesses to the event, supported the report that the object's erratic course and behavior ruled out a standard meteor. One Capitol Airlines pilot reportedly saw the object pass him while flying at 10,000 feet and said it was at about 50,000 feet altitude, moving at tremendous speed.

Weather data recorded at MacDill at the time showed 15 miles visibility, a temperature of 74 degrees Fahrenheit, westerly winds at 9 miles per hour at the surface, and aloft winds from the northwest at 200 degrees at 20 knots at 35,000 feet. The Air Force intelligence officer compiling the reports noted the weather conditions and the wide geographic spread of sightings, from professional pilots and trained military observers, yet the file indicates the case was ultimately marked unidentified. The complete case file, reproduced below as held by the National Archives, spans 10 pages of original documentation.