Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea, and can also be triggered by large rock ...

The likelihood of a powerful earthquake ... risk ratios. But continuing aftershocks from the massive earthquake that struck on March 11, 2011, and left nearly 20,000 people dead in the tsunami ...

The next major Pacific Northwest earthquake could cause coastal land to sink by up to 6.5 feet in a matter of minutes — and ...

A big quake in the Pacific Northwest today could cause coastal land to sink rapidly — up to seven feet, a new study finds.

A new study is fueling speculation and fear about the risks of a major earthquake in the Cascadia subduction zone, including ...

A major earthquake in the Pacific Northwest could sink land and expand flood zones, putting thousands more at risk.

This should have West Coasters shaking in their shoes.

It's a matter of when -- not if -- a significant earthquake will shake the Pacific Northwest, and a new study says some areas ...

Officials fear a huge tsunami could be heading for Chile after a 7.5 magnitude earthquake struck off the coast of Argentina.

A strong offshore earthquake caused a tsunami scare in the far south of Chile and Argentina on Friday (May 2), with ...

A nightmarish scenario for the Pacific ... powerful earthquake that could kill thousands, shattering critical bridges, destroying undersea communication cables and producing a tsunami.

A magnitude 7.4 earthquake in Argentina prompted a tsunami warning along the coasts of Chile - thousands of people were told ...