Guides to nuclear blast effects and fallout
These guides explain nuclear blast radius, fallout and the assumptions behind the simulator. They distinguish reference calculations from the information needed to assess a real incident.
Nuclear bomb blast radius explained
Read pressure thresholds, compare reference radii by yield, and understand why fireball, thermal and blast contours differ.
How to read a nuclear fallout map
Explore effective wind, normalised H+1 rates, fission assumptions and the limits of smooth textbook contours.
Methods, sources and limitations
Inspect the model’s equations, source references, supported range, validation limits and effects it does not calculate.
Education and preparedness are different tasks
An educational map helps make scale understandable. It cannot assess a current emergency or select a safe location. For practical instructions, use CDC radiation-emergency guidance and your local authorities. General UK preparedness advice is available from the Government’s Prepare website.