Immediate Shelter
Disasters and/or emergencies can occur at any time or anywhere. One of the basic safety techniques you can use to protect you and your family is "Shelter in Place." Shelter in Place means to seek immediate shelter and remain inside rather than evacuate.
This basic safety technique can save your family's life during emergencies such as chemical releases and weapons of mass destruction incidents (Nerve agent, radiological, and biological).
Evacuation
However, there may be times when you must evacuate from the building you are in, some of the examples are: you have sufficient notice of a potential hazard and you can evacuate safely, you are in a mobile home or similar structure during tornado and/or thunderstorms, the structure you are in is being flooded, on fire, or in danger of collapsing, and/or you are told to evacuate by public safety officials.