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 forecast …

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

Dec 30, 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 for …

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.

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 consist of …

Oct 3, 2018 · These awe-inspiring waves are typically caused by large, undersea earthquakes at tectonic plate boundaries. When the ocean floor at a plate boundary rises or falls suddenly, it …

When a slab of rock crashed into a remote Greenland fjord, it did more than send water racing up the valley walls. The collapse triggered a 650-foot mega-tsunami that set the entire planet ringing ...

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 all directions …

Jul 30, 2025 · Tsunami fears put West on high alert An 8.8 magnitude earthquake that struck the Russian coast triggered a tsunami warning in Hawaii on Tuesday. It has been downgraded to an …

A tsunami is a vast volume of seawater in motion, extending from the surface to the ocean floor. It is a series of long-period waves created by an abrupt disturbance that displaces a large amount of water.