Among the lessons of Sandy, the frankenstorm, is that nuclear power plans are very much vulnerable, what implies that sooner than later one will just go very much wrong, as happened in Chernobyl and Fukushima. I sincerely expect that this is not the case with the affected US plants but the fact is that at least two of them are having problems already.
New Jersey's Oyster Creek NPP, the oldest nuclear station still at work in the USA, and New York's Indian Point and Nine Mile Point NPPs are in alert and in the two last cases in automatic shutdown (Oyster Creek was already shut down for refueling). All them have suffered too much water and/or winds for what they can actually withstand without problems. Less dramatic problems were reported at Limmerick reactor in Pennsylvania.