Radar detects object over Minnesota

Summary

In February 1953, a radar in Finland, Minnesota, detected an unidentified object 140 miles away on a heading of 155 degrees. The object appeared on the radar screen as twice the size of a normal aircraft. Although there was no visual confirmation, electronics specialists concluded the "blip" was caused by interference from another radar station. This case is a classic example of how radar systems can produce false signals due to interference.

The investigation included a detailed evaluation of the equipment and weather conditions, which showed no anomalies. Despite the operators not identifying the object, the report concluded there was no evidence of a supernatural or extraterrestrial phenomenon.