Comprehensive tsunami alert system via mobile devices

A non-transitory computer program product for location-based tsunami alerting, the computer program product embedded in a processor of a mobile computing device and comprising a set of instructions that when executed in the processor causes the processor to:

• receive one or more sets of geographical coordinates, each set of geographical coordinates corresponding to a zone of danger resulting from a tsunami;
• compute a geographic zone of danger based on the one or more sets of geographical coordinates;
• determine a current geographic location for the mobile computing device;
• responsive to determining that the current geographic location of the mobile computing device is in the computed geographic zone of danger, calculate a shortest safest path to direct the mobile computing device and also a user of the mobile computing device out of the computed geographic zone of danger;
• render, in the mobile computing device, a set of personalized navigational instructions from the determined geographic location for the mobile computing device to a geographic location outside of the computed geographic zone of danger,
• wherein the set of personalized navigational instructions includes at least one of a visual map and a path corresponding to step-by-step textual instructions along with a current pointer that points the user of the mobile computing device in a direction of the shortest safest path to get out of the computed geographic zone of danger based on the determined current geographic location of the mobile computing device and
• wherein the current pointer points to a first zone of safety;
• and,
• responsive to tracking the mobile computing device changing direction away from the first zone of safety, determine a second zone of safety that is closer to the current geographic location of the mobile computing device.