This webpage from the Centers for Disease Control and Prevention offers links to information about diabetes care during a disaster. "During natural disasters, emergencies, and hazards people with diabetes face particular challenges to their health care. If you are an evacuee or are in an emergency situation, it is of prime importance to identify yourself as a person with diabetes and any related conditions, so you can obtain appropriate care. It is also important to prevent dehydration by drinking enough fluids, which can be difficult when drinking water is in short supply. In addition, it is helpful to keep something containing sugar with you at all times, in case you develop hypoglycemia (low blood glucose). To prevent infections, which people with diabetes are more vulnerable to, pay careful attention to the health of your feet, and get medical treatment for any wounds."
Centers for Disease Control and Prevention (U.S.): http://www.cdc.gov/