RoCo Alert will be used to send messages pertaining to the health, safety or welfare of a community being affected by a potential, emerging, or imminent emergency event. Public health and safety-related messages may also be sent during or after an emergency to keep you informed of important information. RoCo Alert uses geomapping technology to create emergency areas, and then calls all the telephone numbers assigned to addresses within those areas. Messages may be based on broad areas or very specific areas, depending on the severity of an emergency.