Fukushima's problem was caused by flooding in the basement where diesel generators were.
Not according to Kirk Sorensen, a nuclear technologist who operates the site energyfromthorium.com who for Forbes wrote the article Explainer: What Caused The Incident At Fukushima-Daiichi. At first he writes "The tsunami destroyed the diesel generators that provide power to drive the pumps that circulate the water coolant through the reactor that removes decay heat." But a bit later he writes generators ran "until their day tanks emptied" of diesel fuel. If emergency generators were running then they could have been refueled. The hard part would of been finding the people who were willing to put their lives at risk. However anyone who supports nuclear power should be so willing, if they aren't willing to put their own lives at risk why do they support putting other people's lives at risk?
All of the mentioned things could potentially cause enough problems in nuclear plants, but they would need to huge (like >7.75 magnitude earthquake *directly* under the reactor)
The title of the article Earthquake threat to nuclear reactors far higher than realized sums it up pretty well. Risk from earthquake is up to 24 tymes higher than previously thought.
people should be smart enough to shutdown the reactor & do other preparations in time as hurricanes can be detected way earlier than tsunamis/earthquakes.
And what of tornadoes? They aren't as predicable as hurricanes. And at specific points they strike they are more powerful than hurricanes.
The biggest reason I oppose nuclear power though is because nuclear power is Hooked on Subsidies
"How do France (and India, China and Russia) build cost-effective nuclear power plants? They don’t. Governmental officials in those countries, not private investors, decide what is built. Nuclear power appeals to state planners, not market actors."
If all energy subsidies were dropped, including for fossil fuels and nuclear power then geothermal, solar, wind, and other clean(er) energy sources would be more cost competitive. Coal get tens of billions of dollars in subsidies. Without government loan guaranties Wall Street would not finance nuclear power. And if fossil fuels had to pay all of it's costs, instead of passing on external cost to others, their cost would be higher.
Falcon