The boulder, named Maka Lahi, measures an enormous 46 x 40 x 22 feet (14 x 12 x 6.7 metres) and lies more than 656 feet (200 metres) inland on the island of Tongatapu. Martin Köh ...

Tsunamis pose a risk to the entirety of the California coast. But should a major one strike, how bad could it be?

Although that shaking caused little major damage — the biggest tsunami wave it produced would have risen up to your knee — it wasn’t the main worry. Rather, seismologists were concerned that ...

The Cascadia Subduction Zone looks a little different than researchers thought. Here's what that means for "The Big One." ...

Earthquakes on subduction faults, where two plates collide and one is thrust beneath another, have a larger risk of creating big tsunamis than earthquakes on strike-slip faults, such as the San ...

The tsunami wave from an anticipated earthquake off the West Coast could reach 100 feet and permanently flood parts of the ...

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.

OLYMPIA, Wash. — The Department of Natural Resources released new tsunami evacuation maps on Friday so residents living along the coast can plan their route before a tsunami hits and know how ...

“The big flood and tidal wave tore up the land and changed the rivers. Nobody knows how many [people] died.” A sign warning of tsunami hazard is pictured at Narrows Brewing Company in Tacoma ...

Most tsunamis are caused by earthquakes, but anything that displaces a large amount of ocean water, including landslides, volcanoes and meteor strikes, can trigger a big wave. According to the ...

“When it comes to the Cascadia subduction zone — that big one we talk about so much — how that generates a tsunami is when plates slip, it moves a column of water above it,” Tappero says.