Abstract: A critical alert notification system includes a mobile device and software and is used to trigger a preselected communication scenario in the event an emergency scenario has been selected. The software includes a database and automatically updates information in the database when a user of the critical alert notification system crosses a preset geographic boundary or perimeter. Panic buttons or icons are swiped, tapped, clicked or pressed to alert people and organizations of an emergency situation with a preselected communication scenario. The critical alert notification system tracks the user's geographic location in real time and triggers two events when the user crosses a preset geographic boundary. The first event is the mobile user interface automatically adjusts to reflect key details based on their current location and the second event turns on the ability to display their location to other users of the system when a user enters a geographic boundary.