# How far does a nuclear blast extend?

## How far does a nuclear blast extend?

Although some windows may be broken over 10 miles (16 km) away, the injury associated with flying glass will generally occur at overpressures above 0.5 psi. This damage may correspond to a distance of about 3 miles (4.8 km) from ground zero for a 10 KT nuclear explosion.

### How fast does a nuclear blast travel?

All blast waves move at a velocity that depends upon the blast intensity, and they diminish in speed with distance from the explosion. A nuclear blast wave can start at 5 times the speed of sound about 6000 km an hour. Did some rough math and came up with about 45,000 mph.

#### How long does a nuclear winter last?

Surface temperatures would be reduced for more than 25 years, due to thermal inertia and albedo effects in the ocean and expanded sea ice. The combined cooling and enhanced UV would put significant pressures on global food supplies and could trigger a global nuclear famine.

How big is the smallest nuclear bomb ever made?

Nuclear bombs range in size from a few kilotons of TNT equivalent power to possibly over 100 megatons of TNT equivalent power. The smallest that we are more or less aware of were the (withdrawn from inventory more than 30 years ago) W54 series of warheads, with explosive blasts measured in the mere tons or tens of tons of TNT equivalent.

How big is a nuclear bomb compared to TNT?

The power of such weapons is usually measured either in kilotons (kT) or megatons (MT), being respectively 1000 tons or 1,000,000 tons of TNT equivalent. Nuclear bombs range in size from a few kilotons of TNT equivalent power to possibly over 100 megatons of TNT equivalent power.

## How much energy does an atomic bomb release?

The energy output of the reaction can range to the equivalent of about a ton of the explosive TNT up to 500 kilotons of TNT. The bomb also releases radioactive fission fragments, which result from the heavy nuclei breaking into smaller ones. Nuclear fallout mainly consists of fission fragments.

### How big was the nuclear bomb in Hiroshima?

Nuclear weapons are straight-up terrifying and one of those brutal facts of life most of us try to forget for our own sanity. The bomb that fell on Hiroshima, ironically called Little Boy, produced an explosion of 15 kilotons (or the equivalent of 13,600 tonnes (15,000 US tons) worth of TNT).