The map above simulates a 300-kiloton nuclear airburst over Miami, USA — roughly the size of a modern deployed warhead. The coloured rings show the estimated fireball, the zones of heavy, moderate and light blast damage, the reach of the thermal flash and the ionizing-radiation dose. Drag the marker or change the weapon in the full simulator to explore other scenarios.
The metropolitan area is home to about 6.2 million people — the rings above are drawn to real scale over their homes.
The marker is on downtown Miami. The 1.9 km zone of total destruction covers the Brickell financial district, Bayfront Park, the Kaseya Center arena and the Freedom Tower; the 4.7 km collapse ring reaches Little Havana's eastern blocks, Wynwood, the Port of Miami, Dodge Island and the western end of the MacArthur Causeway. Third-degree burns extend to about 7.5 km over Coconut Grove's northern edge, Little Haiti, Key Biscayne's approach and Miami Beach's South Beach across Biscayne Bay; the 14.5 km ring of broken windows reaches Coral Gables, Hialeah's southern edge, Miami International Airport and Mid-Beach.
About 6 million people live in the Miami metropolitan area along a narrow coastal strip; Biscayne Bay and the Atlantic take roughly half of each ring, so the population inside the circles is lower than the city's size suggests. The land is flat and barely above sea level. Miami was 370 km from the Soviet missiles in Cuba in October 1962 — the closest the world has come to nuclear war. See How a weapon would be delivered.
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