The Pacific Northwest is due for a Major Earthquake

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Published 2021-06-30
An 8.0-magnitude-plus earthquake hasn't rumbled beneath the Pacific Northwest since the 1700s. Now, the region is due for the next "big one" and a subsequent tsunami. Coastal Indigenous communities could be severely affected. (Already, the Shoalwater Bay Tribe is constructing a tsunami tower to give their residents a better shot at survival in the face of this kind of natural disaster.)

Clues from the past—paired with modern-day science—can help us better understand why this area is at risk and how to best mitigate an earthquake and tsunami's effects.

Chapters
00:00 Introduction
00:32 The Last Major Earthquake in the US
02:13 Evidence of Major Earthquake and Tsunami in the US
04:09 Indigenous Communities Prepare for Future Earthquake and Tsunami

earthquake tsunami warning, us earthquake, us tsunami, what causes a tsunami, how to survive a tsunami, what is a tsunami, what is an earthquake, what causes an earthquake

#earthquake #tsunami #naturaldisaster #novapbs

PRODUCTION CREDITS:

Produced by:
Angelica Coleman
Jay Colamaria

Production Assistance:
Lorena Lyon
Christina Monnen
Caitlin Saks

Music: APM

Archival:
Amiran White
Degenkolb Engineers and Rice Fergus Miller
Edgeworx Studios, LLC
Shoalwater Bay Indian Tribe
Storyblocks
Weave Ltd.

© WGBH Educational Foundation 2021

All Comments (21)
  • @rjs4667
    They have been saying the big one is coming since the 60s. It could be as close as tomorrow or 1000 years from now and it would still be just a blink of an eye for the Earth.
  • @SaintMartins
    Born & raised in the Pacific Northwest i've been hearing this all my life. I predict we won't be prepared b/c it's easy to become complacent & say "yeah, yeah, yeah, whatever" until it happens then we'll complain why nobody warned us. Just human nature isn't it?
  • @kdenishere
    A close family member (president of the mining association Canada) showed me maps of what would happen to the coast line of B.C if a magnitude 8.5 or above happened. It was absolutely shocking. If you're in North Van, Delta, Tsawwassen, or anywhere near Richmond, god be with you. These areas aren't on bedrock and will sink/landslide before a tsunami even hits. Everything will be under 75+ feet of water.
  • @xpan195
    0:49 wow that visual was a trip… that graph shows my anxiety levels when the water in the toilet rises instead of flushes
  • @StarMama90
    Watching this after a bunch of small earthquakes in northern CA today
  • @echospaw899
    I was born & raised, and still live here in Washington state for nearly 60 years. I find it interesting how so many people who live in our state will listen to warnings, and actually see signs with their own eyes, and yet... they still just go on about their merry little lives without a second thought. Those are the people who really are not prepared in some way in case of a disaster. And if they survive, they'll be some of the first ones running and screaming for help while standing in long lines to get it. Be prepared. Those people are the ones who will kill you out of desperation.
  • @disconer
    I knew someone who freaked about the 'big one' and spent thousands getting 'Earthquake Prepared' then shoved it our face that we're all doomed. 25 years later I asked whether the prep was worth it - got blocked >.<
  • @wiregold8930
    Brian Atwater is the geologist who figured out the 1700 tsunami mystery. We all owe him a huge thank you.
  • The Japanese thought they’d made themselves safe with a 10 meter tsunami defence wall. Except when the earthquake hit a few years ago the coastline dropped by several meters lowering the wall by the same amount
  • @1TexasKid
    I’ve been around the Olympic Peninsula. Coastal communities severely lack in emergency evacuation routes. Highways need to become freeway sized in order to move massive amounts of vehicles in a hurry. No stop signs or traffic lights to stop or delay emergency evacuation routes. Winding mountain Highway 101 is only 2 lanes in some areas. I experienced Texas coastal Hurricanes & Tornadoes. Emergency Evacuation easily crawls to a snail pace. There is little chance that most people will survive the big one.
  • @donneary7104
    Having survived the Slymar, Calif quake of 1971, which was a 6.6 quake, I can not imagine how terrifying that higher amount of 9.0 would be. During my experience, which happen right before dawn, myself and 8 month pregnant wife awoke, to crashing and shaking that gave me an impression that a speeding freight train was right outside my window. Looking out that window briefly, I watched as trees and telephone poles waved back and forth like like being moved by a giant hand. All the dishes and kitchen ware came crashing out of the cupboards. My large console TV tipped over and the bathroom sink pipe snapped with water shooting up like a fountain. We were taught to retreat to doorways in a quake, as it is reinforced and less likely to collapse. As I hugged my wife we were knocked off our feet several times and when I got back up I couldn't stop my knees from knocking, I was that scared. I was sure we were going to die that day. After shocks happened for days, maybe weeks. Each time I would wonder if this new quake would be my final. But we survived. Life goes on for the living. I pray the Pacific NW will somehow be spared this clamity.
  • @kellypbr7742
    They've been saying California is due for the big since the 1950's, I remember the paranoia it caused as a child.
  • @calilove6445
    8.2 today in Alaska. We haven't even seen the aftermath yet. Still waiting for more news. Tsunami warnings are in effect in Hawaii... stay safe everyone. 😪
  • @chrissymeri4957
    I am legitimately terrified of this happening in the very near future. I remember the one that happened when I was in fourth grade and my teacher was so scared. I couldn't concentrate for days after. Idk why but earthquakes terrify me so bad!
  • @ericjones1892
    Remember the one we had, which was a 6.8,they can happen at any time and to see the streets move like waves on the ocean that was scary
  • @bunnyniyori6324
    Well, that assumes it hits before the Pacific Northwest burns down first.
  • @juliegarbs4018
    I have heard this since the 70's. They don't know when its coming.
  • @Anna_Stetik
    They've been saying this for decades. Just live life, stop living in fear. We all lose things, we all die. Don't spend your life worrying about dying - that isn't living.