The resulting explosion had a blast yield equivalent to 21 kilotons of TNT, roughly the same as the Trinity blast, but was confined to the Urakami Valley, and a major portion of the city was protected by the intervening hills, resulting in the destruction of about 44% of the city.
A explosión resultante tivo un equivalente duns 21 quilotóns de TNT, case igual que a proba Trinity, pero quedou confinada ó val Urakami e unha gran parte da cidade quedou protexida polos montes intermedios, o que resultou na destrución do 44% da cidade aproximadamente.