Tsunamis can happen on any U.S. coast, according to the government's Ready Campaign. The Pacific and Caribbean coastlines, however, are at the greatest risk. So what's the difference between a watch ...

Tsunami alerts lit up Siri Zama's phone on Tuesday. The 28-year-old high school teacher in Kapolei, Hawaii, fled inland. "It was raining, and the clouds got real dark. It was just a little scary. I ...

When an earthquake threatens to turn part of an ocean into fast-moving walls of water, tsunami warning scientists can do nothing for the first five minutes except wait for information. But within the ...