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Named weapon
B41 blast radius (25 Mt)
Last updated
B41 is listed here as the most powerful US bomb ever deployed, at 25 Mt. It is a retired class. The globe uses an airburst so the rings can be compared with Tsar Bomba.
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 | 5.2 km (3.2 mi) | Maximum luminous radius |
| 20 psi | 9.9 km (6.2 mi) | Heavy destruction |
| 5 psi | 21.6 km (13.4 mi) | Most buildings collapse |
| Thermal | 43.2 km (26.8 mi) | 3rd-degree burns |
| 1 psi | 49.7 km (30.9 mi) | Windows shatter |
Twenty-five megatons is in Tsar Bomba’s neighbourhood and still below that 50 Mt test. The radius ratio is much smaller than the yield ratio because of cube-root scaling.
No city was ever struck with this weapon. City links on this page are scale exercises.
If you want the actual largest explosion, use Tsar Bomba on Novaya Zemlya.
See this yield on a place
New York · Novaya Zemlya · Los Angeles · London
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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