UFO identified as black weather balloon in Denver 1949

Summary

An FBI agent and witnesses observed a luminous object in Denver in 1949. The report details a blue-white round light at high altitude, ascending irregularly. Although initially thought to be a flying disc, the investigation concluded it was a black weather balloon launched by Stapleton station. Weather data confirmed clear conditions and excellent visibility, supporting the identification. Radar checks found no anomalous objects, reinforcing the conventional explanation.