10 Things That Will Happen if “The Big One”
Hits the West Coast 10. Aftershocks Further complicating rescue missions and evacuations
are aftershocks, which will continue for days afterwards. This will cause much more destruction and
notably, it will be hard to pull survivors from unstable buildings because an aftershock
could happen at any moment. This leads to more destruction, and more people
buried under rubble. As a result, the death toll will again rise,
either from people attempting rescues, or simply because people can’t get to them. Aftershocks are also known for causing landslides,
especially in areas with lots of hills. Hills, you probably realize, are found all
over the west coast. 9. It Will Cause a Devastating Tsunami For North
America’s West Coast The earthquake will, of course, cause a ton
of damage. Then, people along the west coast of northern
California, Oregon, Washington, and British Columbia will have about 10 to 15 minutes
to get to higher ground because a tsunami will be heading their way. Depending on where the wave makes landfall,
it could be 20 to over 100 feet tall, carrying debris like boats and cars. Inland, the giant wave will be travelling
at 12.5 miles per hour. That may not seem very fast, but a grown man
is knocked over by ankle-deep water traveling at half that speed. Unfortunately, many people are going to have
a hard time getting to high enough ground because a lot of the roadways in the earthquake
zone area will be destroyed. The good news is that only about 71,000 people
live year round along the west coast where the tsunami will hit. However, some areas of the coast are popular
tourist attractions. So while many people don’t live there year
round, thousands of people work in the area, and even more visit during the summer months. This will make evacuations much more difficult. For example, when people live in an area where
there’s some type of an inherent danger, they’re generally more prepared. However, it’s very doubtful tourists will
be prepared. They may not even know how to drive out of
town without their GPS, and this will only add more chaos to the already nightmarish
scenario. 8. Japan, Indonesia, The South Pacific, and Hawaii
Won’t Be Safe Either Not only will the rupture cause problems in
North America, but a giant tsunami will also be headed in the direction of Hawaii, Indonesia,
the South Pacific, and Japan. Luckily, these places will get a warning because
it will take the wave about 10 hours to travel there. However, the wave will still be over 10 feet
tall, and millions will be displaced. It’s believed that these countries will
be affected because they already experienced it just over 300 years ago. In 2005, researchers found evidence that seven
12-foot waves hit the village of Miho, Japan, in 1700. Those waves were caused by a Cascadia earthquake. 7. Seattle Will Collapse Seattle has a population of just over 686,000,
and a lot of those people will be displaced if the Cascadia Fault ruptures. When the earthquake starts, Seattle will be
devastated by landslides; somewhere in the neighborhood of 30,000 of them. Another problem that Seattle will face is
a phenomenon called soil liquefaction. The process happens when loosely packed and
waterlogged sediments that are at, or near, the surface lose strength. It’s similar to standing in ankle deep water
on a sandy beach. If you wiggle your toes while standing in
the water in the sand, your foot will sink. Well, in Seattle, this will happen with soil
that has buildings on top of it. That’s obviously not a good thing. In Seattle, about 15 percent of the structures
are built on liquefiable soil. This includes 17 daycares and the homes of
around 34,500 people. 6. Oregon Would Be Destroyed One of the states that will be the hardest
hit by a Cascadia earthquake is Oregon. The problem is that the Cascadia Fault wasn’t
discovered until 1970. Oregon didn’t have any earthquake measures
in place until 1974. As a result, the Oregon Department of Geology
and Mineral Industries estimates that 75 percent of all the structures in Oregon would fail
to withstand a Cascadia earthquake. This includes 3,000 schools, half the police
departments, and two-thirds of the state’s hospitals. Another problem with Oregon is that many of
the cities are fairly isolated. There are also only a few roads in the entire
state that lead east, away from the destruction. However, 38 percent of the state’s bridges
will be out of commission, along with the railroads, and airport runways. Another problem is that all liquid gas is
shipped in, so fuel shortages are very likely. This will all leave people stranded, making
it incredibly difficult for search and rescue workers to reach them. This could be even worse during the summer
months when 50,000 people visit the beaches on Oregon’s coast. If the earthquake were to happen on a beautiful
summer day, when the beaches are packed, it would be utter havoc. Another problem, which faces every state and
city on this list, is if the earthquake happened at night. Then, all of these problems would have to
be dealt with in the dark. 5. Canada’s Worst Natural Disaster Canada will also be hit hard by a Cascadia
earthquake. According to studies, it has the potential
to be the worst natural disaster in Canadian history. Vancouver Island, which has a population of
nearly 750,000, will have a lot of the problems that the other areas we’ve mentioned will
face. Just like Seattle, buildings will collapse
because of soil liquefaction. Like Oregon, the cities on the coast where
the tsunami will hit are popular tourist areas. Also, one of Canada’s most beautiful cities,
Victoria, which is the most populated city on the island with a population of 350,000,
is in the extreme zone for the earthquake. A problem with Vancouver Island is that it’s,
well…an island. The airport is right in the extreme danger
zone for the earthquake. And unfortunately, there’s no highway to
this danger zone. (Sorry, we had to.) The most common way on or off the island are
ferry systems, and those would have a two week disruption. This is going to make it incredibly difficult
to get hundreds of thousands of people basic supplies like food, water, and medicine. People in British Columbia are also unprepared. When last surveyed, about 70 percent of them
didn’t have an emergency kit. 4. The San Andreas Fault May Rupture Around the
Same Time If the earthquake and the tsunami from the
Cascadia rupture weren’t bad enough, there appears to be a link between the Cascadia
Fault and the San Andreas Fault. The San Andreas Fault runs 800 miles through
California. You may remember that it was the star of its
own summer blockbuster. Or maybe you don’t, because the movie was
so forgettable. Researchers believe that there is a connection. It turns out, 13 out of the last 15 earthquakes
caused by the San Andreas Fault were preceded by a Cascadia earthquake. While a San Andreas earthquake often happens
years later, it’s also possible that it could happen within hours. For this reason, even if it didn’t happen
immediately, Los Angeles, the second most populous metropolitan area and the city with
the second highest gross domestic product in the US, would need to be evacuated because
it isn’t exactly the most earthquake ready city in the country. Notably, all of the electricity, gas, and
water lines cross the San Andreas Fault. If an earthquake reaching an 8 on the Richter
scale happened, Los Angeles wouldn’t have any gas, water, or hydro for months. Many of the modern buildings would survive,
but older ones would be condemned as structurally unusable. It would take years, and billions of dollars,
to restore Los Angeles to resemble a shadow of its former self. 3. Disease Epidemic This type of disaster will be of unprecedented
levels in North America. For example, 400,000 people were displaced
by Katrina, but more than six times that amount will be displaced in the wake of a Cascadia
earthquake and tsunami. The problem is, with this displacement and
the inevitable disruption to essential services, there are often disease outbreaks and epidemics. This happens because it’s hard to get access
to clean water, overcrowding in shelters, and limited access to healthcare and medication. If the Cascadia earthquake happens before
proper safety precautions are taken, there will probably be outbreaks of diseases like
Salmonella, dysentery, and typhoid fever in the disaster areas. 2. The West Coast of North America Would Burn When describing what the west coast would
be like after a Cascadia earthquake, the director of FEMA in that area said that everything
west of Interstate 5 will be “toast.” And yes, that is literally the term he used. It may be toast because a major problem with
earthquakes is that fires break out. In areas like Seattle and the state of Oregon,
fire departments will also be in ruins. If they aren’t, many roads will be destroyed,
making it difficult to travel to fires to put them out. If they get to the scene, if they have an
earthquake resistant fire system, like Vancouver, and if it isn’t damaged, then they may be
able to put out a few fires. But it will still be very difficult to contain
cities full of small fires. These small fires will turn into big fires,
and the next thing you know whole blocks are gone. God forbid the fires spread to the forests
and the brush that cover the west coast. Which, by the way, are already predisposed
to forest fires. Things would be even more dire if an earthquake
happens while forest fires were already raging, because resources would be depleted. Things would only get worse if the San Andreas
earthquake happened around the same time. In Los Angeles, hundreds of fires would start. But they wouldn’t have access to water to
extinguish it, since the waterlines cross the San Andreas. 1. Death and Destruction As you probably gathered, a Cascadia earthquake
would be absolutely devastating to the west coast of North America. FEMA’s projections are rather alarming. In the United States alone, they estimate
that 10,000 people will die, 30,000 will be injured, and 2.5 million people will be displaced. They’ll need water, food, medicine, healthcare,
and shelter. Of course, if the San Andreas Fault was to
rupture around the same time, thousands more will be injured and killed. Millions more will be displaced. Even if the San Andreas earthquake doesn’t
happen, that area may have to be displaced until the cities are more earthquake proof. Following a Cascade earthquake, one is likely
to happen soon thereafter. Hopefully, a San Andreas earthquake doesn’t
happen until many years later. As for damages, according to FEMA estimates,
the earthquake and ensuing tsunami will cause $309 billion in damage. Every city within 100 miles of the coast will
suffer blackouts. Inland, power will be restored within days. But it will take months to get hydro and natural
gas back to areas near the coast. As for water systems, it’s estimated that
it will take at least three weeks for restoration. It could take seven months, or even up to
a year, to repair them. That’s a long time to live in an area without
running water, gas, or electricity. Especially if you’re trying to rebuild
a city.
Yeah, more or less this is accurate. I think some of the numbers are outdated, but also some of the risks are understated. For anyone interested, check out /r/CascadianPreppers
This video is trying to do some fear mongering, it doesn't mention the enormous resources Oregon has dedicated to trying to improve the quake resiliency.
If anything, Washington is in a worse spot IMHO, because their government fails to prepare at a state level in the same manner
#6 / 3:25 in the video if it doesn't jump there automatically
FYI usernames in post titles don't alert your target. Has to be in comments.