Why Check Your Nuclear Fallout Risk?
In an increasingly uncertain world, understanding your nuclear fallout 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 Fallout Calculator Works
Our free nuclear impact calculator uses physics-based models to estimate blast zones, thermal radiation, and fallout patterns from a 2 megaton nuclear 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.Read your results — Instantly see your survival rate, threat level, and expected effects.What Factors Affect Fallout 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
| Zone | Survival Rate |
|---|
| Fireball | 0% |
| Severe blast | 0% |
| Moderate blast | ~5% |
| Thermal radiation | ~10% |
| Light blast | ~30% |
Check your nuclear fallout risk
Use our free calculator to see your survival rate
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