Back in time

Nuclear explosions, 1945 to 1998

Every nuclear explosion from the Trinity test in July 1945 to May 1998, the bombs dropped on Hiroshima and Nagasaki among them, placed at its test site.

Open the live map

What you see

  • Each explosion as a green mark sized by its yield in kilotons.
  • Click one for the country, the site, the type (tower, airdrop, underground and others), the yield and the purpose.
  • Opened from this page, the map plays 1945 to 1998.

Where the data comes from

  • SIPRI and FOAThe list of nuclear explosions compiled by SIPRI and the Swedish National Defence Research Institute (FOA), as published by TidyTuesday.

A closed list that ends in 1998, so North Korea’s tests from 2006 on are not in it.

Good to know

  • The United States made nearly half the explosions here, and the Soviet Union most of the rest, many at Semipalatinsk in today’s Kazakhstan.
  • The list’s licence is not stated.

The largest yields

The first recorded here in each decade

Goes well with