Tsunamis don’t look the way we picture them. Most people, if they imagined one coming, would picture a towering wall of dark water. The reality is stranger and, in some ways, more terrifying: a ...

Most tsunamis go unnoticed. Defined as a wave caused by a disturbance like an earthquake, landslide, or volcanic eruption, tsunamis often reach just a few inches in height, according to NOAA. But when ...

Some of the largest tsunamis in history have reached heights of tens of meters when they hit land. In extreme cases, such as landslide-triggered events, the water can surge far beyond typical levels.

Any large movement of land that causes major displacement of ocean water—from earthquakes, landslides, or volcanic eruptions—can generate a tsunami. Tsunamis generated in Alaska have caused damage and ...