How far does a nuclear bomb effect in miles?

This damage can correspond to a distance of approximately 3 miles (4.8 km) from ground zero for a 10 KT nuclear explosion. Damage in this area will be highly variable, as shock waves bounce several times off buildings, terrain, and even the atmosphere. Heat is a problem for those closest to the explosion. Minor first-degree burns can occur up to 11 km (6.8 miles) away, and third-degree burns, which destroy and blister skin tissue, can affect anyone up to 8 km (5 miles) away.

Third-degree burns that cover more than 24 percent of the body would likely be fatal if people don't get immediate medical attention. For survivors of nuclear war, this persistent radiation hazard could pose a serious threat for up to 1 to 5 years after the attack. However, for more information on the current state of nuclear weapons in the world, including the scale of bombs, you can visit the Nuclear Notebook in the Bulletin of Atomic Scientists. The 1963 Limited Nuclear-Test-Ban Treaty ended atmospheric testing for the United States, Great Britain and the Soviet Union, but two major non-signatories, France and China, continued nuclear testing at a rate of approximately 5 megatons per year.

Using updated models of Cold War nuclear explosions, the Wellerstein simulator can roughly predict the number of casualties and injuries from a nuclear bomb in a given location, large or small. Essentially, I would like to avoid countries with access to nuclear weapons and those involved in nuclear agreements.

Bradford Tutwiler
Bradford Tutwiler

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