How far above Nagasaki did the second atomic bomb explode?

The second atomic bomb, known as "Fat Man," was detonated approximately 1,650 feet (500 meters) above the city of Nagasaki, Japan, on August 9, 1945. This altitude was chosen to maximize the bomb's destructive power and blast radius. The explosion caused significant destruction and loss of life in the city, similar to the earlier bombing of Hiroshima.