What is a What should I do?
tsunami? If you feel the ground
start to shake, drop,
Put an emergency kit together
Assemble a three day supply of non-perish-
cover and hold on if
A tsunami is a series of sea waves able food, water, medical supplies and
you are inside. If you
usually caused by a displacement of clothes for each
are outside, watch
the ocean floor by an undersea earth- member of your
for falling objects until
quake. As tsunamis enter shallow water family. Kits may
the earthquake is over.
near land, they increase in height and can Salvation Army.
cause great loss of life and property damage. Immediately after the earthquake, move Information on
People on open beaches, in low-lying inland or to high ground, away from low putting a kit
areas, by bay mouths or tidal flats, and near lying areas. Evacuate on foot and grab together can
mouths of rivers draining into the ocean are your emergency kit as you leave. be found at
in greatest danger from a tsunami. your local
Do not wait for an official warning library, sheriff’s office, or by logging
because the tsunami may only be minutes
Tsunamis can occur any away. Do not pack or delay.
on to www.OregonGeology.com/emergen-
time of day or night
Do not return to shore after the first wave.
Wave heights from tsunamis occurring in
the Pacific over the last 80 years have been
More waves may be coming, even hours Two types of tsunamis
later. A distant tsunami caused by an undersea
between 20 to 45 feet at the shoreline. A few
waves however have been much higher—as Wait for an “all clear” from local officials earthquake far from the Oregon coast will
much as 100 feet because of local conditions. before returning to low lying areas. take several hours to come onshore. There
will typically be time for an official warning
Know the tsunami evacuation and evacuation to safety.
routes in your area. If you are For an earthquake near the
visiting the coast, make sure coast, a tsunami could come
you know how to get to high onshore within 15 to 20 min-
ground. utes after the earthquake,
before there is time for official
Remember, never go to the warning. The ground-shaking
coast to watch a tsunami.
of the earthquake may be the
Tsunamis move faster than a
only warning you get.
person can run.
Stay tuned to your radio, marine Destructive distant tsunamis
The tsunami that struck Hilo, Hawaii in radio, NOAA weather radio, or have struck the Oregon
1960 was caused by an undersea earth- television station during a tsuna- coast from as far away as
quake near Chile and caused 61 deaths. mi emergency. Alaska and Chile.
Oregon Emergency Management
3225 State Street, P.O. Box 14370
Salem, OR 97309
Oregon Department of Geology
and Mineral Industries
800 NE Oregon Street #28, Suite 965
Portland, OR 97232
If you feel the ground shake, (971) 673-1535
drop, cover and hold – then move http://www.oregongeology.com
quickly to higher ground and safety.
Nature of the Northwest Information Center
800 NE Oregon Street #5, Suite 177
Do not pack or delay. Go on foot Portland, OR 97232
and grab your emergency kit as (503) 872-2750
you leave. http://www.naturenw.org/
Do not wait for an official warn- International Tsunami Information Centre
ing because the tsunami may
Honolulu, HI 96850-4993
only be minutes away. (808) 541-1658
Do not return to shore after the
first wave. More waves may be
Wait for an “all
clear” from local
returning to low
maps are available for
many coastal communi-
ties. Contact your local Funded by the National Oceanic and Atmospheric Adminis-
tration under SO #OBLIG-2000-5332-0-0 through the Oregon
emergency services Department of Geology and Mineral Industries. Published by
office or sheriff’s office for the Oregon Department of Geology and Mineral Industries in
cooperation with Oregon Emergency Management.
a free copy. v.2 04-2006