What Is A Tsunami?
tsunami is a series of sea waves most commonly caused by an earthquake
beneath the sea floor or an underwater landslide. As the waves enter
shallow water, they may rise rapidly and inundate coastal areas with
the potential of endangering lives and creating significant property
damage. The first wave is often not the largest, and waves may
continue arriving for a number of hours. The time it takes for the
waves to reach their destinations depends on where the earthquake
far field or “Distant” tsunami is one that may be generated by a
very large earthquake in remote areas of the Pacific Ocean. Since
distant tsunamis such as this may take several hours to reach the
Southern California coast following the event, they allow time for
warnings to be issued to give coastal residents time to evacuate.
near field or “Local” tsunami is one that can hit the coast within
minutes following an offshore geological event. Residents of coastal
communities probably will feel such an earthquake. This type of
locally generated tsunami is possible at many points along the
Southern California coast and provides little time for warning the
population and less time for evacuation.
If you are near the coastline, an earthquake may be your only warning
of an approaching tsunami, so it is VERY important to act quickly.
How Can I
Prepare For A Tsunami?
feel an earthquake, duck, cover and hold until the shaking
stops. Count how long the shaking lasts. If severe shaking lasts 20
seconds or more, a tsunami might follow. If you are at the beach and
you notice the water has pulled back or run out, creating a vast
expanse of exposed beach, this is a warning that a tsunami may be
GO TO THE BEACH TO WATCH FOR, OR TO SURF, A TSUNAMI WAVE!
away from coastal or low-lying areas. Waves might continue for several
hours and travel several times faster than you can walk, run or drive.
you are that close, you will probably not escape the waves. Remember
that a tsunami is a series of waves. Often the first wave may
be the least dangerous. The waves may get progressively worse.
common sense. Do not endanger yourself by trying to surf a tsunami.
Because they are not like regular waves, they are impossible to surf.
They are much faster, higher and can come onshore filled with debris.
means that a significant distant earthquake has occurred. Tsunami
approach is not confirmed but is possible. Stay tuned to local radio
and TV stations for information. Prepare for a possible Tsunami
means that a tsunami approach has been confirmed. Stay tuned to local
radio and TV stations for information and be prepared to evacuate if
advised to do so by local authorities.
within the evacuation advisory area should immediately make their way
to higher ground. Tsunami “Safe Areas” may be indicated by signs
placed along roads at elevations of 90’ or more above sea level. Stay
tuned to local radio and TV stations for information about local
Tsunami Safe Areas:
are on a beach, a low-lying coastal area, or Pacific Coast Highway,
make your way AT ONCE to higher ground (at least 90’ above Sea Level).
Tune to local media for further information, and DO NOT RETURN TO
COASTAL AREAS until the all clear signal has been given by public
safety personnel. Local Evacuation Safe Areas include, but are not
Malibu Bluffs Park
Hughes Research Labs parking lot
Malibu Creek State Park
Salvation Army camps (behind Tapia Park)
TUNE TO LOCAL RADIO STATIONS FOR INFORMATION ABOUT OTHER EVACUATION
Evacuation Routes: These routes provide access to communities away
from coastal areas where shelter and support can be found.
Topanga Canyon Blvd.
Malibu Canyon Road
Encinal Canyon Road
Local Radio News Stations: