Well before you even start packing, question would be how will you get out? Car? Bike? Foot? Evacuation? Now depending on that what would you take would make a difference. In one hour you can pack a lot of stuff if you had to use the car. If you were beign evacuated most likely you will be limited to a small bag or back pack in order to make space for others. This is a real deal here. Thinking of NY and how 20 mile ride can change into 2-3 hour trip I can only imagine what would happen if we tried to get out in case of real emergency.
Matt