Basic Disaster Supply KitWater (one gallon per person per day for several days, for drinking and sanitation), food (at least one multi-day supply of non-perishable food), battery operated or hand crank radio and NOAA weather radio with tone alert, flashlight, first aid kit, additional batteries, whistle (for help signal). After severe weather conditions, clean drinking water may not be available. Keep two-week bottled water on hand, at least one gallon of water per person, per day. If a power outage leaves your region without power and without access to the grocery store, you'll appreciate having stored non-perishable food in advance.
If you have a evacuation, the Red Cross estimates that you will need enough food for three days; if you stay at home, make sure you have food ready to eat for about two weeks. While there's no way to know how long you'll need to survive on your own after a natural disaster or other emergency, planning a minimum of three days of survival is a good starting point.