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A sudden power surge during a routine test at Reactor Four triggered steam explo
Featured Event 1986 Event

April 26

Chernobyl Reactor 4 Explodes: Nuclear Disaster Unleashed

A sudden power surge during a routine test at Reactor Four triggered steam explosions that ruptured the vessel and ignited its graphite moderator, sending a radioactive plume drifting across the western Soviet Union and Europe. This catastrophe forced the evacuation and resettlement of 350,400 people from Belarus, Russia, and Ukraine between 1986 and 2000, with official data confirming that roughly 60% of the fallout settled on Belarusian soil.

April 26, 1986

40 years ago

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