Tidal Waves or Tsunamis

Compiled by Dick Oakes


A tidal wave, or "tsunami" (pronounced soo-NAM-ee), is actually a series of waves caused by an underwater disturbance. Although most tsunamis are associated with large earthquakes whose epicenters underlie or border the ocean floor. Some of these resulted in coastal waves of 100 feet high that smashed into land with tremendous destructive power. The major tsunami detection and warning system is the Pacific Warning System of the National Oceanic and Atmospheric Administration (NOAA), with headquarters at Ewa Beach Observatory near Honolulu, Hawaii.

Tsunami Warning

Safety Actions