1963 03 9316919 17 55N57 40W SanJuan PuertoRico

Summary

An unknown object exploded in the sky over Puerto Rico in 1963. The report mentions an initial explosion followed by another when it struck the water near San Juan. The ship SS Plainsman alerted the Coast Guard, but no search results were received. Insufficient data prevented a clear evaluation of the event. Although several possibilities were considered, such as balloons or aircraft, no definitive conclusion was reached. The case remains unsolved.