Again, TV and radio are your best defenses here. You don't want to wait until the flood waters are on your doorstep to take action. TV stations will have helicopters and other aircraft in the air surveying the damage as soon as the weather clears. Keep on top of the reports these aircraft provide so you know whether there are additional threats to your home. If it hasn't for whatever reason, you may have to evacuate to a shelter after the storm blows over.
Most areas have many public shelters, usually at local schools, playground gymnasiums, etc.
Start with one of these, get the family settled, then you can see about finding a motel or making other arrangements for an extended stay. If your home has sustained water damage, start the process of pulling up the carpet and drying out sheetrock and insulation immediately. If your home has experienced a power outage, there could be a number of potential causes. High winds could have forced a shutdown of a generating plant, knocked down lines somewhere in-between the plants and your home, a transformer on your block could have blown, or the lines on your street could be down. If there is a problem with one of the generating plants, power will be re-routed from other plants.