This page shows a simulation of the 100000 kt nuclear bomb (100000 kt) detonated over Pyongyang, North Korea. 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.
100 megatons was the design yield of the Soviet AN602 — the Tsar Bomba — before its final stage was throttled back to 50 for the 1961 test. No weapon of this size was ever deployed: the bomb weighed 27 tonnes, no missile could lift it, and the arms race moved towards many smaller warheads instead. This scenario is therefore a physical ceiling, not a military one. The rings are enormous: a fireball about 12 km across, total destruction (20 psi) to roughly 13 km, collapse of houses (5 psi) to about 32 km, third-degree burns on exposed skin to about 75 km in clear weather, and broken windows (1 psi) out to about 100 km.
What that means in Pyongyang
Centred on Kim Il-sung Square, the 13 km zone of total destruction covers the entire city on both banks of the Taedong, including Mangyongdae, Sunan airport's approach and the Ryugyong Hotel. The 32 km collapse ring takes in all of urban Pyongyang, Pyongsong and the surrounding districts — about 3.5 million people. Burns to 75 km reach the port of Nampo, Sariwon, Anju and Sinmak; the 100 km ring of broken windows covers much of South Pyongan and North Hwanghae provinces. For comparison, North Korea's own largest test in 2017 was roughly a thousand times smaller than this scenario. The 1.2-megaton B83 scenario shows a real weapon over the same city.
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