California Governor’s Office of Emergency Services
When to Stay versus When to Leave
Depending on the disaster, you may need to Shelter-in-Place or Evacuate. That is why it is
important to be informed of emergencies in your area by subscribing to your county’s
emergency alert and warning system. The alert and warning system(s) can aid you in your
decision to Shelter-In-Place or Evacuate.
Shelter-in-Place occurs when conditions require you to seek protection in your home, place
of work/business, or other locations. Reasons to seek shelter include chemical/pollutants in
the air, during an earthquake, tornado or hurricane, and active shooter threats.
To effectively Shelter-in-Place, you must first consider the hazard and then choose a place in
your residence or building that is safe for that hazard.
If instructed by emergency officials to Shelter-in-Place you should:
• Bring your family and pets inside immediately.
• Tune in to emergency broadcast stations to stay informed.
• If necessary, lock doors and windows.
• If sealing is required, use duct tape and plastic to seal off doorways, air vents, outlets,
windows, and fireplace dampers. Turn off air conditioning, forced-air heating systems,
exhaust fans, ceilings fans, and clothes dryers. Cover the space under the door with a
wet towel.
• If your children are at school, do not pick them up unless requested to do so, as they
may be Sheltering-in-Place until emergency officials release them.
Evacuations occur when the current environment becomes so dangerous that Sheltering-in-
Place is not safe. Disasters such as wildfire, floods, earthquakes, tsunamis, and volcanic
eruptions may require escape from an area deemed unsafe.
Evacuations can generally occur one of two ways, first via an Evacuation Warning
(voluntary/advisory) or second, via an Evacuation Order (mandatory). Local law
enforcement agencies will issue the warning or order if the situation requires it. If you believe
your safety may be compromised, evacuate early. There is no need to wait for an
evacuation warning or order to leave. Evacuation Warnings or Evacuation Orders may vary
in your jurisdiction so check with your local law enforcement office for more information.
• Evacuation Warning: This is time to prepare you, your family, and your pets to leave. It
is generally a voluntary order given when emergency officials believe the disaster or its
effects may expand into your area. They should be taken seriously as many factors
can affect the spread of an incident. If you have any access and functional needs,
such as medical or mobility issues, you should prepare to leave once an Evacuation
Warning is issued.
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