00:00Scientists are renewing urgent warnings about one of America's most dangerous and least discussed natural hazards,
00:07a megatsunami from the Cascadia subduction zone.
00:10The fault line runs 700 miles off the coasts of Oregon, Washington, and Northern California.
00:17And it has gone more than 320 years without a major rupture.
00:21Geological records show it produces magnitude 9 earthquakes roughly every 250 to 500 years.
00:28When it ruptures, scientists say waves topping 100 feet could slam coastal towns like Crescent City, California, and Seaside, Oregon,
00:36with less than 20 minutes to reach high ground.
00:39Alaska faces a separate growing danger.
00:42A thawing mountainside above Berry Arm Fjord could collapse without warning,
00:47generating waves estimated up to 1,000 feet high into active cruise ship lanes.
00:52Hawaii, positioned across the Pacific Ring of Fire, remains exposed to ocean-wide tsunamis from every direction.
01:00Three states, one ocean, and a geological clock, geologists say, is already well past due.
01:06Good to see you for today's future.
01:06Good to see you, everyone.
01:06I love you, everyone.
01:06I love you.
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