This page shows a simulation of the "Fat Man" - Nagasaki bomb (20 kt) nuclear bomb (20 kt) detonated over 103.83429010698, 1.3024260204148. The map displays the estimated fireball, the zones of heavy, moderate and light blast damage, thermal radiation and ionizing radiation. Click «What does that mean?» for a detailed legend, or run your own detonation on the main page.