Major areas of current research include determining why some large earthquakes do not generate tsunamis while other smaller ones do. This ongoing research is designed to help accurately …

Dec 5, 2024 · Your official U.S. government weather forecasts, warnings, meteorological products for forecasting the weather, tsunami hazards, and information about seismology.

Dec 8, 2025 · tsunami, catastrophic ocean wave, usually caused by a submarine earthquake, an underwater or coastal landslide, or a volcanic eruption. The term tidal wave is frequently used …

Oct 3, 2018 · A tsunami is a series of ocean waves that sends surges of water, sometimes reaching heights of over 100 feet (30.5 meters), onto land.

Feb 25, 2025 · A tsunami is a series of extremely long waves caused by a large and sudden displacement of the ocean, usually the result of an earthquake below or near the ocean floor.

Dec 8, 2025 · A powerful earthquake struck off northern Japan late Monday local time, triggering a tsunami of up to 28 inches in Pacific coast communities, the Japanese Meteorological Agency …

Tsunami waves are unlike typical ocean waves generated by wind and storms, and most tsunamis do not "break" like the curling, wind-generated waves popular with surfers. Tsunamis typically …

5 days ago · Read CNN’s Fast Facts to learn more about some of the worst tsunamis in history.

Tsunamis A tsunami is a wave generated in a body of water by a disturbance that moves the whole water column, from seafloor to ocean surface. Any physical force that displaces a …

A tsunami is one the most powerful and destructive natural forces. It is a series of waves (not just one) caused by a large and sudden displacement of the ocean. Tsunamis radiate outward in …