Which evacuation category requires action within 4 hours?

The category that requires action within 4 hours is the Priority evacuation category. This classification indicates a significant level of urgency where the situation necessitates prompt action to ensure safety or address critical needs. In the context of evacuation protocols, Priority typically involves scenarios where there is a potential risk to life or health that needs to be managed swiftly but does not reach the extreme urgency of immediate action needed in more critical situations.

Understanding this distinction is vital for effective emergency management and ensuring that resources are allocated appropriately based on the level of risk and need for timely response. By categorizing evacuations in this way, organizations ensure that they can respond to emergencies in a structured manner, prioritizing actions based on the imminence of the threat a particular situation poses.