You absolutely cannot survive for long without water. When planning for a disaster allot at least 1 gallon of water per person per day, with a minimum three-day supply. Since water can be stored indefinitely, it is especially important to keep some gallon bottles at home. Water is one of the first items to disappear from store shelves when a disaster occurs or is anticipated.
Plan to have at least a three-day supply of food on hand for each person in your family. Ready-to-eat meals can include canned items (be sure to pack a can opener), snack bars, cereal, dried fruit and any other item that can be stored at room temperature and does not need preparation.
According to the U.S. Department of Homeland Security, your First-Aid kit should contain plenty of sterile bandages, burn dressings and ointment, eye wash solutions, a thermometer, soap, prescription and over-the-counter medicines and supplies, and small tools, such as tweezers and scissors. While it is easy to skimp and buy a cheap, tiny First-Aid kit at your local discount store, make sure that whatever you purchase has enough supplies to last for several days and to assist several people.
Depending on the type of disaster or emergency, it may be necessary to have a way to filter the air you breathe to avoid contaminants such as dust, chemicals and smoke. The more advanced and better respirator you can pack the better. Dust masks and paper respirators that fit closely against your face will at least provide basic protection for large particulate matter, though they will not help you in the case of a chemical hazard.
Battery-Powered or Hand-Crank Radio
You can't depend on having electricity in a disaster so it is important to have either a battery-powered radio with plenty of extra batteries or a hand-crank radio. For weather disasters or emergencies it is useful to have a NOAA weather radio so you can receive the most current information for your area.
Make sure to have at least one flashlight and plenty of extra batteries during any disaster. You more than likely will not have electricity and will need to be able to move around and function in the dark.