A recent article in the USA Today suggested a limited number of U.S. reactors are in seismic zones which could place them at risk for a catastrophic failure like occurred in Japan.

The article goes on to include a link to allow readers to individually search locations for reactors closest to them and overlay recent seismic activity since 1973.  By limiting the search to earthquakes since 1973 it tremendously downplays the real risk.  Geologically speaking, 37 years is a blink in time, earthquakes happen as stress builds up, often over hundreds of years.

The article goes on to say that the Cascadia subduction zone has recently been discovered to have ruptured at least 20 times in the last 20,000 years, causing 9.0 earthquakes and devastating tsunamis to the west coast.  In the last 37 years it has been dormant but the risk is certainly not diminishing with every passing year, it grows.

Use the model provided in the link, but also do a little due diligence and research geologically relevant earthquake risk surrounding the nuclear plants. The results just might shake you up.