Depending on the type of disaster approaching,...Hurricane for example. I would definitely seek shelter far away from the low lying bays and other bodies of water. Make sure my family is safe and high and dry.
That would be Plan A and my first step. Also would make sure I gathered and had all of the essentials handy...Batteries, flashlights, plenty of fresh drinking water and if I could afford it at the time and they were in stock, would definitely consider a generator to run things like the furnace and frig.
Depending on how long we would be out of power, this would be a great addition to the emergency prep list. Also a good first aid kit wouldn't hurt either. In case something, or somebody goes bump in the night. By the way good question and one that everyone should think about more seriously, especially after the Hurricane Sandy aftermath.