Tsunami Resources

Tsunami waves travel at speeds of 300-600 miles per hour (483-966 km/hr), and the first wave may not be the largest one. Although most tsunamis are caused by earthquakes in oceanic and coastal regions, they can also be triggered by underwater landslides and submarine volcanic eruptions that are powerful enough to displace the surrounding water.

Related Hazards

Precautions

What to Do During a Tsunami

For more Information

NOAA's Tsunami.gov

International Tsunami Information Center

Tsunami Awareness Program - Hawaii

Q&A: What is a “Tidal Wave”?

Although commonly used in the past, the term “tidal wave” is incorrect - it's a misnomer. Tides result from gravitational influences of the moon, sun, and planets. Tsunami waves are not caused by or related to the tides, but instead are generated by disturbances that displace ocean water, such as earthquakes, and undersea landslides or volcanic eruptions.