The Fukushima nuclear reactor plant event, which appears to have lost its backup power supply because it was impacted by a Tsunami isn't just restricted to Japan. Take for example the 4 reactors (2 working and 2 planned) in Florida at Turkey Point.
http://en.wikipedia.org/wiki/Turkey_Point_Nuclear_Generating_StationA similar result could occur if the site was hit by a Tsunami.
http://www.youtube.com/watch?v=3lwAt-Wg3uI