At 2:44 p.m. Tuesday, July 29, every cellphone within reach of Hawaii’s Emergency Management Agency blared with a warning sound designed to raise listeners’ adrenaline, and a message appeared, warning ...

A 7.8 magnitude undersea earthquake near Russia caused a tsunami scare. Here's why we fear the destructive waves ...

Tsunami's are caused by large scale disturbances on the seafloor.

Waves slam into a sea wall off Waikiki Beach after authorities downgraded earlier tsunami warnings following an earthquake off Russia’s Far Eastern Kamchatka Peninsula, in Honolulu, Hawaii, U.S., July ...