Abstract: A comprehensive system and method for monitoring a geographic person location, periodically warning a person of emergency situations in the geographic location, and transmitting requests for assistance in emergency situations. The system comprises a warning unit 12 that is carried by the person or that is located in mobile units 20 or in buildings or houses 19. The warning unit 12 includes a geographic satellite receiver 38, a receiver circuit that receives broadcast warning signals defining dangerous situations and geographic locations of the situations, a computer controller including a processor 42 and a memory 44, an alarm indicator 64 or 66 that indicates when the person is in danger, and a transmission circuit that generates and transmits signals requesting assistance and signals warning of the dangerous situations in a vicinity of the person carrying the portable warning unit 12 along with the current geographic location of the person. The system further comprises a command center 10.