Regarding Fukushima

A massive undersea quake that hit in March 2011 sent a tsunami barrelling into Japan's northeast coast.

As well as killing thousands of people and destroying communities, the waves also swamped the cooling systems at the Fukushima nuclear plant, sending three reactors into meltdown.

The nuclear disaster, the world's worst since Chernobyl, displaced tens of thousands of people and rendered tracts of land uninhabitable, possibly for decades.
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Strong 7.0-magnitude quake hits off Japan coast: USGS

Actually, because one of the meltdowns was nuclear weapons grade plutonium reprocessor, they will be uninhabitable for thousands of years not just decades without deaths from radiation and or genetic damage or both.