Two employees at the Weather Bureau station in Richmond, Virginia were making pilot balloon observations in April 1947 when they reported seeing something else through the theodolite. It happened on three occasions. One observation is recorded at fifteen thousand feet with the object followed for about fifteen seconds, described as metallic and shaped something like an ellipse with a flat bottom and a round top. It appeared below the balloon and much larger than it, moving rapidly enough that the observers would not estimate a speed. The other observations were made the same way at twenty-seven thousand feet.
The date is the part worth pausing on, and the government's own analysts pause on it too. Writing in 1949, they note that these observations happened several months before any publicity about flying saucers appeared in an American newspaper. They raise it while dismissing the idea that witnesses were copying reports they had read: at Richmond there was nothing yet to copy.
What is on the record
One telling on one channel, with the witnesses recorded as the meteorologist and staff rather than by name, and two primary documents. The grade is official record.
The documents are US government analyses of flying object incidents from 1948 and 1949, and they were checked directly for this batch rather than accepted on their titles. The 1948 analysis describes the Richmond episode specifically, naming the Weather Bureau station, the theodolite, the three occasions and the shape, which is why this case keeps its document-corroborated tier where several others in this batch lost theirs. The two documents do not quite agree with each other. The 1948 paper records two employees and three sightings; the 1949 paper records one well trained observer with three and a second observer with one, making four. The archive reports the discrepancy rather than picking the version that reads better.
What the documents do not do is resolve the sighting. The 1948 paper files it among reports whose sources it treats as reliable, alongside others it grades lower but judges cannot be entirely ignored. That is a statement about the quality of the witnesses rather than about the object.
Why it sits where it does
L4, carried by government paperwork that describes this specific event. The observers were trained, instrumented and on shift, which is the strongest thing this file has. What passed over Richmond is not resolved here.