One thing that needs to be mentioned is ventilation for the exhaust gasses of these things.
The Pacific Northwest had a similar (but smaller) storm to this in 2006. We had much less sea damage, but more wind damage from trees falling over. Power out for 10+days for some people.
14 people dead in WA state, but 8 of these came from CO poisoning - 5 in 1 family because they ran the generator in their garage!
http://en.wikipedia.org/wiki/Hanukkah_Eve_wind_storm_of_2006
My in-laws used a generator for this time. They were out for 10 days, and needed to walk 2 miles each way (due to downed trees) to get gas for the darn thing. No-one thinks about the gasoline infrastructure needed to keep vehicles and generators going if the power is out for multiple days. New Jersey is finding this out right now!