Castle Bravo
Disaster
Castle Bravo was the first in a series of high-yield thermonuclear weapon design tests conducted by the United States at Bikini Atoll, Marshall Islands, as part of Operation Castle. Wikipedia
Location: Bikini Atoll
Date: March 1, 1954
Weight: 23,500 pounds
Coordinates: 11°41′50″N 165°16′19″E / 11.69722°N 165.27194°E
Test series: Operation Castle
Yield: 15 megatons of TNT (63 PJ)