As a geographer who has watched many videos on the potential for a megathrust earthquake in the Cascadia Subduction Zone, I found this brief video to be an excellent introduction to a complicated topic. It would benefit from editing to correct errors in pronunciation of place names and minor issues of content, such as when the tsunami hit the coast of Japan. Strong graphics and balanced commentary enhance the presentation, making the material easier to grasp. A list of suggested readings below the video would be useful for those who wish to explore the topic further. Overall, really well done!

I live in WA state and a study was done on the impacts to transportation after the big one hits, and they determined that all but two bridges and overpasses would collapse. Of the two bridges that could withstand the earthquake, one is used by trains and the other only leads to a small farming island of little importance. It will be completely devastating.

Great video! I remember reading that the Cascadia fault also has the potential to trigger the San Andreas fault line. Apparently 8 of the previous Cascadia quakes caused a chain reaction. If that were to occur, we could see the entire western coast of North America impacted from Canada to Mexico. Hope it doesn't happen in my lifetime!

Love seeing your graphics getting better with each video! And the research quality is keeping up! I can really feel how much work you've put into this one. Easily my favorite video on your channel so far!

I lived in SF for 30+ yrs. People often talked about "The Big One" but no one every worried about it and certainly never altered their lives about it. Buildings are built to withstand earthquakes. (Except Millenium Tower, heh, heh, heh.) Que sera as they say. The quake to worry about will be on the New Madrid Fault. All those midwestern towns and cities made up of old buildings of unreinforced masonry are going to tumble.

What has recently come into focus is that when the Cascadia shook back in 1700, the San Andreas, and the Hayward Faults also shook at the same time. I did my research and the USGS finally admitted this within the last 2 years. We always hear about Washington, Oregon, Canada being hit hard, but how hard with all of Northern and Southern, California also be hit by the MegaQuake and the Mega tsunami because we are going to get slammed also.

This was one of the best descriptions I've seen out of many dozen.

I live in central Oregon near Mt Bachelor. Not that far from Mt Hood. I feel tremors.

Love seeing these cascadia quake videos show up in my feed every few weeks now. She must be getting ready to blow soon. I live in Port Angeles 🎉🌊

Great vid man!

And yet, residents in Ocean Shores, WA, the city likely to have the highest fatality in a CSZ tsunami, has cut through the dunes in 5 places to allow tourist vehicles to drive on the beach. The worst vehicle cut is at Chance A La Mar West Blvd which has a max 17' elevation through dunes that are 23' high. When the subsidence drops the entire coastline 6' prior to the tsunami, the gaps will only be 11' elevation. No one in Ocean Shores, FEMA, WA EMD, etc. will explain why opening the dunes to a tsunami flow is acceptable. But they won't fix that.

The juan de fuca plate is like a giant wedge jammed in between the pacific and continental plates

Really well done. When transplants to California ask about the San Andreas I’m often asking if they’ve ever heard of the nightmare fuel that is the CSZ. The answer has always been no.

I live in oregon right close to the southern end of the cascades subduction zone. Southern oregon is beautiful

I grew up in Michigan and have never experienced earthquakes but I moved to Washington State in 2009. I’ve always been concerned about earthquakes here, thankfully I haven’t experienced one yet. Not that I could feel anyway but it’s scary to think about. I started to learn about them when I moved here so I wouldn’t be absolutely clueless when it does happen.

Here after the 4-5 good shakes on the north coast in Humboldt 😬

If I move to Seattle, it will be a 9 plus.

Absolutely a very shocking and sobering video! I was in San Francisco in October 89 at the World Series and survived that! I was in Anchorage AK in 2004 visiting my parents when the Indian Ocean Earthquake and Tsunami occurred!!! Luckily the Tsunami alert was canceled but felt Earthquakes albeit smaller the same day! In 2018 I was in Anchorage again with the 7.0 shaker! My parents were in the 64 Great Alaska Earthquake 9.2 and survived that! I was born 4 years later in 68!

First Nations knew,. There are stories. My grandfather had First Nation friends, and they told him the stories. He told us. In 1960

This will undeniably be a catastrophic event, but it might not be as bad as a repeat of the 1812 New Madrid earthquakes which will happen in the middle of North America and whose effects will be felt over a huge part of the USA.

I love your animations!

This is why I moved from the Pacific Northwest. When this thing finally slips it will be the worst earthquake in recorded US history (think the Tohoku Earthquake of 2011).

I know this is slightly nit picky, but Puget Sound is pronounced PewJet Sound. Not being a local you wouldn't have known that., so no biggie really. A lot of local names are from Native American culture, Puget Sound however is not one of them. The sound is named after Peter Puget who accompanied George Vancouver on his exploration of the areas waterways. Now on to the CSZ. When it ruptures, it will devastate pretty much the entire western coastline of the US and Canada (and possibly Mexico Russia, China etc from the Tsunami's), as well as wipe out pretty much everything west of Interstate 5 in Washington, Oregon, and Northern California. The damage to everything East of Interstate 5 will also be massive. The costs will be measured in potentially millions of lives and trillions of dollars. The CSZ is why I NEVER go to the coast.

brb packing my things

The Juan de Fuca moves in a clockwise direction because of the directions the other two plates are moving. This complicates things. The Geology of the Pacific Northwest and British Columbia is very complicated as well. Much of it is made up of terranes that formed in the Pacific because of volcanism or terranes from other places. Europe and Mexico part of the mix. The hot spot now in Montana is theorized to have been in the Pacific or created by picking up terranes.

Willamette Valley is pronounced will-AM-it =) I used to live there but now half way around the world... Though I miss it tremendously I feel safer with this distance from the impending Big One !!!

The explanation of the way rock behaves below the surface is intriguing

I've seen and read several presentations about the Cascadia subduction zone. They all have varying numbers of quakes accredited to the zone over the last 5000 years. The more conservative say these occur every 500 years or so. The ones that include more quakes put the period between quakes at about 250 years. If the latter, the northwest is overdue by 50 years with a better than 50 percent possibility of a major quake in the next few years. Also, the ones including more quakes have a number of smaller ones below the titanic 9+ level. A quake may occur that's well below that in strength. Say a 7 to 8. While still very destructive, it would be less so than a 9+.

I live on the south end of Vancouver Island and have definitely felt earthquakes, albeit small ones. We also get the occasional tsunami alert, and once a year at work, we go through our disaster plan. Hopefully "the big one" doesn't happen in my lifetime, but I have no control; all I can do is prepare as best I can.

The farralon plate remnants is now thought to be the source of stress build up in the new Madrid seismic zone. Interesting how both areas are waiting for the big one and are possibly caused by the same thing despite the distance.

Someone should make a video on the effects going East. The food, electronics, medical , roads, travel

How scary this fault is for being so quiet--even now.

Puget Sound is pronounced "PYOU-jet". It's Grays Harbor County, not Gray County.

Nicely done.

Interesting YT suggested this video for me, possibly b/c I just made my Big Seattle Earthquake prediction video a week ago. My research & maths point to very likely within 2 years - & possibly as soon as early 2024!

With that large an earthquake, wouldn't that increase chances for nearby volcanos to erupt?

This is very interesting on explaining how this forms two parallel mountain ranges, and why the coast ranges aren't volcanic. I don't remember ever seeing any one address this before.

I live in western Arkansas. We have the big fault near Mark Tree, Arkansas. In 1811-1812., it produced a series of sever quakes over a period of months. The Mississippi River ran backwards briefly during these quakes. This series of quakes was felt over large areas.

This...the Yellowstone...OMG 😮

Would Eastern Washington feel this?

I am curious to know how much of this Cascadia Fault snapped? (The entire length?) Can we figure out where on that fault was the epicenter? Also, compare that to the fault off the coast of Banda Ache and ask the same questions--just to get an idea of how big this coming quake will be.

This video includes new information I've never heard before. Including the "scraping" of the plate that creates the coastal mountains, and the estimated time for the northern stretch of the Cascadia Subduction Zone to rupture versus the southern stretch.

I live on central Vancouver Island near the north end of the subduction zone, I hope to not be alive when the next mega-quake hits here, it will likely be devastating

That was a really nice Video. I hope my comment helps the video get a bit more attention from the Algorithm so more people can see a well produced video :D

The last one of these that I watched said 12% in the next 50 years. This guy says 20-30%. That's a big difference.

Good thing General Aviation has a plan in place to help in the aftermath with the West Coast General Aviation Response Plan

Been saying this shit my entire life and they'll be saying it after I'm gone. Geological events are meaningless when your lifespan is a mere blip on a geological scale. Either it happens, or it doesn't. You can't even prepare for something like this.

Yellowstone going off is something to worry about more than this, it'll be easier to recover from a large earthquake than Yellowstone which will be worldwide devastation for decades.

I live on the coast, right at the southern tip of the JDF plate. We do get lots of little quakes here, but I guess we're due for a bigger one...

Nice another up and coming education channel all for it! The market is huge now but this is a good thing, just hard to grow tho

Check your narrator's pronunciation: The Willamette, the major river in Portland, Oregon, is pronounced Wil-LAM-met, and Puget Sound in Seattle, Washington, is pronounced PEW-jit Sound.

FYI, the earthquake that happened on Sunday March 14, 2117 at 1:32pm, which was luckily only an 8.4, struck 68 miles off the coast Washington. 4,825 people lost their lives. Timelines can change so hopefully officials can make the coast more safe before my time.

Bravo! Subscribed

Thankful Vancouver Canada allocate huge funding to do seismic upgrade to major infrastructures since 2014. But we still need more to prevent catastrophic events after a magnitude 9 or larger earthquake, such as emergency power and essentials for people to survive until the rescue arrived

Great video. FYI, it’s “will-am-it” not “willmit”, and “pew jit” isn’t “pug it”.

Great video! One of the better ones on this subject.

It may or may not be worse than the Anchorage quake, which was also subduction-caused. Kudos on pronouncing "Juan de Fuca" right!

What would a full margin tear on the SJDF fault look like for SF Bay Area.

Audio engineers may have been a little distracted by the visual representation.

You would do well to research the proper pronunciation of location names.

Wow, thanks for this video packed with scientific facts. I feel like I was in class.

where are the sources, especially Atwater findings and plot of historic earthquakes

If the new madrid fault goes off again it'll make this fault line look like childs play

2:48 *United States Geological Survey. Cool video and graphics. Keep em comin.

There will be 40 meter tsunamis since the energy stored is so great.

I live in Northwestern Calif. & all my life have heard about the BIG one. I'm pretty sure everyone from Canada to California knows it's bound to happen. The only question is when.

Would people be safe from a tsunami because of the high cliffs in most of that area?

I live in Indiana, so we don’t have to worry about this.

I would like to know why y'all saying 50 years. Its literally going to happen at anytime any day. The evidence of that is very clear

The sky is falling! The sky is falling! C'mon dude, even the experts can't predict.

I'm holding my breath starting...now.

Cascadia doesn't produce small quakes

Copalis Co-Pal-iss (like hiss, but without the h)

Anyone living on the coast is going to be F’d.

Good, informative content but I respectfully suggest that the background music should go.

Yellowstone I live 200 miles from there thats what I'm worried about savvy

I bet this NEVER happens.

I live on Southern Vancouver Island. Thank you for pronouncing 'Juan de Fuca' properly 😊

is this dutchsinse burner account?

That was 11 months ago

What would happen if CASCADIA and San Andreas go at the same time?

Quite interesting to learn that the 1700 Cascadia earthquake caused a tsunami on a Japanese island 10 hours before! I think it was 10 hours later.

..I don’t need ‘white flashes’ between ‘scenes’ in order to stay ..awake. Dang, had to cut this one short - though, I’m a former Oregonian having moved to solid ground.

You forgot to mention the many many times the South JDF has set off the San Andreas and that there have been full margin ruptures of both JDF and San Andreas at the same time. If you really get into it F.E.M.A is quoted as saying everything west of Freeway 5 will be toast if there is a full margin rupture that sound like fun NOT, it may even set off a few volcano's. Have a nice day all.

When California goes Yellowstone goes so we mine the fault lines at the salt n sea for lithium and subsidize electric cars.

This video MAY have contained some worthwhile information, however, your choice of music completely devalued anything you might have wanted to say, IF you even had something of value to say.

I kind of take "the big one is coming" with a grain of salt. 1966-67, California was in "imminent" danger of a major quake. One that would cause parts of the state to fall into the Pacific. Not saying a major quake isn't possible, but .........

I'm 65 so I hope this happens sooner rather than later.

Humans can predict what happened millions of years ago, and can predict earthquakes 50 years from now. But can't predict a rain storm a week or 2 from now

I hope there's no nuclear power plants in that area or the devastation will be atrocious

the sky is falling the sky is falling ^_-

When will we leave the coasts and go to safe distances inland from catastrophic storms, floods and earthquake regions. For some reason we we build all kinds of infrastructure and powerplants even reactors in an area prone to disaster that destroys that crap. Moving now will save lives and know it will happen again and again and again.

Very well done. No "fear mongering". It will eventually experience a "full rip" but most likely not in our lifetimes. Thanks for being truthful!!!!

hi

good video but you need to work on how to pronounce northwest place names.

Isn't every countries worst earthquake waiting to come. Time is nothing to nature.

When you do videos about America, we don't have Netflix. We are the miles inches based on. So when you make a video about America use? How many miles per how many inches are? How many feet?

Sounds like what just happened in Japan, a massive slip fault tsunami.

Copalis is pronounced 'Co-Pay-liss" and the 'S' in USGS is "Survey," not "Service." Also, Puget is pronounced "Pyoo-git." Willamette was also mispronounced.

Move now