Tsunamis: Know What to Do Whiteboard

San Diego is known for great weather and
beautiful beaches, but did you know that there are natural hazards that threaten
our coasts? A tsunami is a series of travelling ocean waves, or surges, caused
by earthquakes, landslides and volcanoes on the ocean floor. Unlike regular ocean
waves, the tsunami acts more like a fast rising flood, with waves spanning
hundreds of miles. Even traveling up to 500 miles per hour. That’s as fast as a
commercial jet. As the waves get closer to the shore in shallow water they slow
down and reach heights of 20 to 50 feet. Depending on the source of the tsunami
you may have anywhere from hours to just minutes to react. So how can you know if
a tsunami is coming? Pay attention to the signs. The most dangerous place to be
during a tsunami is by the shore. If you’re near the coast and feel an
earthquake with strong shaking that lasts more than 20 seconds long, hear a
loud ocean roar or if you notice that the water starts to recede dramatically,
do not wait for an official tsunami warning. Keep calm and immediately move
inland, about one mile into higher ground, 100 hundred feet up on foot and stay there.
Follow tsunami evacuation route signs. If you can. Never go down to the shore to
investigate, and if you’re in a building move to the highest floor possible.
Monitor local news and radio stations for information and wait until emergency
officials say it is safe to return home. Tsunami waves and their dangerous
currents can last for hours or days and are usually filled with debris and other
dangerous materials. While tsunamis may be rare – whether you
live work or visit San Diego County’s 70 miles of beautiful coastline, it is
important to know your risks and be prepared. To learn more about tsunamis in
San Diego County and what you can do to be prepared
visit ReadySanDiego.org

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