A map has shown an underwater fault line that could trigger a catastrophic earthquake that could cause a 100ft tsunami with ...

The researchers were then able to create a map of the zone. Researchers found that the Cascadia zone is “much ... of course, ...

The most recent risk assessment, outlined in maps published by the California Geological Survey, illustrate the devastation possible from extreme-but-realistic scenarios.

The quake prompted a brief “Tsunami Threat” for Tonga ... also prompt U.S.G.S. scientists to update the shake-severity map. An aftershock is usually a smaller earthquake that follows a ...