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How to Check Your Nuclear Impact Risk

Why Check Your Nuclear Impact Risk?

In an increasingly uncertain world, understanding your nuclear impact risk has never been more important. Whether you live near a military installation, a major city, or in a rural area, knowing the potential impact of a nuclear detonation can help you plan and prepare.

How the Nuclear Impact Calculator Works

Our free nuclear impact calculator uses physics-based models to estimate blast zones, thermal radiation, and fallout patterns from a range of real life warheads detonation. Here's how to use it:

  • Pick your warhead — Choose the warhead you would like to see modelled.
  • Place the impact site — Click anywhere on the interactive map to set the detonation point.
  • Set your location — Click a second point or search by address/zip code to mark where you are.
  • Detonate and read your results — Instantly see your survival rate, threat level, and expected effects.
  • What Factors Affect Impact Risk?

  • Distance from ground zero — The most critical factor. Even a few extra kilometers can dramatically change your survival rate.
  • Detonation type — Surface bursts create more radioactive fallout; air bursts maximize blast radius but produce less fallout.
  • Wind patterns — Fallout travels with prevailing winds and can affect areas hundreds of kilometers downwind.
  • Terrain and shelter — Being indoors, especially underground, dramatically improves survival chances.
  • Key Blast Zones to Understand

    ZoneSurvival Rate
    Fireball0%
    Severe blast0%
    Moderate blast~5%
    Thermal radiation~10%
    Light blast~30%

    Check your nuclear impact risk

    Use our free calculator to see your survival rate

    Open Calculator ☢