warning plan(A scheme or method of acting developed in advance to notify as quickly as possible the affected population of any sudden, urgent and usually unexpected occurrence requiring immediate action)
emergency plan(Program of procedures to be undertaken in the event of a sudden, urgent and usually unexpected occurrence requiring immediate action, especially an incident of potential harm to human life, property or the environment)
risk exposure plan(A scheme or method of acting that takes effect if the probability of harm to an area or its population increases beyond a normal level)