00:00Scientists are issuing a fresh warning about one of America's most dangerous hidden threats.
00:05The Cascadia subduction zone stretches nearly 700 miles off the Pacific Northwest coast.
00:11If this fault ruptures in a magnitude 9 earthquake, it could unleash a massive tsunami.
00:16Some models suggest wave run-up in certain locations could reach extraordinary heights.
00:22Communities across Oregon, Washington, California, and Alaska would face the greatest risk.
00:28Emergency officials are updating tsunami evacuation maps for the first time since 2019.
00:34Scientists are also monitoring how El Nino conditions may influence coastal flooding risks.
00:39The last major Cascadia rupture occurred in 1700.
00:43Experts say another will happen again someday.
Comments