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Tsunami

 

Additional Video
USGS Tsunami Preparedness along the West Coast, USA

Before a tsunami

  • Check to see if you live or work in a tsunami inundation zone. Click here for interactive inundation maps.
  • Plan an evacuation route from your home, school, workplace, or any other place you frequently visit that is in the inundation zone.
  • Learn the natural warning signs of a tsunami:
    • FEEL the ground shaking severely, or for a long time.
    • SEE an unusual disappearance of water, or oncoming wall of water.
    • HEAR a loud roaring sound coming from the ocean.
  • Prepare emergency kits for your home, automobile, and workplace.
  • Make a family communication plan.
  • Be aware and informed.
    • Purchase a hand crank (or battery operated) flashlight and radio, or purchase a National Oceanic and Atmospheric Administration (NOAA) weather radio receiver with an alert feature and Specific Area Message Encoding (SAME) to keep you informed of Tsunami Watches and Warnings.
    • Sign up to receive tsunami alerts at http://ptwc.weather.gov/subscribe.php

During a tsunami

  • If you are at the beach or near the ocean, and you feel the earth shake:
  • Evacuate immediately inland to higher ground, and take shelter. If you are unable to quickly move inland then a high, multi-story, reinforced concrete building may provide a safe refuge on the third floor and above.
  • DO NOT wait for official evacuation orders.
  • RUN if you see a tsunami coming!
  • Stay away from rivers and streams that lead to the ocean due to strong tsunami wave action and currents.

After a tsunami

  • Follow the advice of local emergency and law enforcement authorities. DO NOT return until local authorities say it is safe.
  • If the tsunami was generated by a local earthquake, be alert for aftershocks and stay tuned to local radio and television broadcasts for emergency information and recovery assistance.