Threat Calculator

Set detonation point and shelter parameters.
Alt/Shift + Click on map to set bunker location.

💡 Recommendation for Little Boy (Hiroshima)

In this zone, a tightly sealed basement or windowless inner room is sufficient to protect against thermal radiation and flying glass.

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Survivability Analysis

📍 Distance from epicenter: 1.32 km
💥 Shockwave:11.7 / 25.0 psi
☢️ Isolation (PF):102x
Radiation at shelter location:
Outside: 539 RemInside: 5.31 Rem

💧 Water:360 л.
🥫 Food:300,000 kcal
Energy:180 kWh