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Named weapon
W88 blast radius (455 kt)
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W88 is this list’s most powerful US submarine-launched ballistic-missile yield at 455 kt. It is the modern strategic comparison many city users are reaching for after Little Boy.
Educational estimate only. Blast and heat rings use simplified yield scaling. They ignore terrain, weather, shielding, and weapon design. Casualty counts use WorldPop 2020 residents on an approximately 1 km grid and ignore time of day, commuting, shelter, and evacuation. This is not a targeting or civil-defense tool. About the model.
| Effect | Ground range | What the model means |
|---|---|---|
| Fireball | 1.0 km (3,415 ft) | Maximum luminous radius |
| 20 psi | 2.6 km (1.6 mi) | Heavy destruction |
| 5 psi | 5.7 km (3.5 mi) | Most buildings collapse |
| Thermal | 8.3 km (5.1 mi) | 3rd-degree burns |
| 1 psi | 13.1 km (8.1 mi) | Windows shatter |
Drop W88 on the same Times Square pin as Little Boy and the inner rings leave Midtown. That exercise is why both presets exist.
The model still ignores shielding, weather, and building codes. A larger number is not a better prediction; it is a larger illustration.
B83 (1.2 Mt) is the next jump still listed as a US bomb class on this globe.
See this yield on a place
New York · Los Angeles · London · Tokyo
Other weapons
Little Boy · Fat Man · W76-2 · W76-1 · W87 · W88 · B83 · B53 · Ivy Mike · Castle Bravo · B41 · Tsar Bomba
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