I don't know about Chernobyl, but there should not have been any nuclear related evacuations for Fukushima. People who wanted to leave on their own could. Evacu

I don't know about Chernobyl, but there should not have been any nuclear related evacuations for Fukushima. People who wanted to leave on their own could. Evacuations might have been a good idea in some places for the worst flooding and earthquake zones, but I don't know that it was even possible to get that information in advance, and even if it was the Japanese government would probably not act on it, then or now.