A tsunami is a series of waves created when a body of water, such as an ocean, is rapidly displaced by an earthquake, volcanic eruption or other underwater explosion, landslide, or other large impact. Nuclear weapon tests at sea have the potential to generate a tsunami. The effects of a tsunami can range from unnoticeable to devastating.
A tsunami wave has a short height compared to its very long length, often hundreds of miles long. This is why tsunamis can be difficult to see from the land or air.
Determine if your neighborhood is in a potential tsunami inundation zone on the internet by going to Cal EMA’s “My Hazard” website: http://myhazards.calema.ca.gov/
To check and see if your neighborhood is in the area that could be evacuated when there is a Tsunami warning and where to go please see the attached maps: HMB Evacuation Zone Shelter, Pacifica Evacuation Zone Shelter, South Coast Evacuation Zone Shelter.
Find out more about tsunamis at Ready.gov.
See Frequently Asked Questions about tsunamis at NOAA.gov.