daftandbarmy
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Most of the BC coast would be toast after these big ones...
What if....A Super disaster? Impact on Canada or the world? Napkin speculation
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OldSolduer
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So I watched a show about Noah's Ark this morning. According to a historian there was an eruption so big it caused a tidal wave with a wave over 400 feet high. Really interesting stuff.
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There's this 1958 tidal wave caused by a rockslide that makes that look calm...
Lituya Bay’s Apocalyptic Wave
Nature does some really incredible things when pissed off.
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Researchers are suggesting that if/when "the big one" hits the Pacific North-West it could quite possibly trigger another "big one" along the San Andreas Fault causing devastation all along the Pacific Coast from BC to California.
They were drilling off Oregon. What they found could shake all of California
Scientists have uncovered evidence that megaquakes in the Pacific Northwest might trigger California’s San Andreas Fault. A research ship’s navigational error revealed paired sediment layers showing both fault systems moved together in the past. This finding hints that the next “Big One” could...
www.sciencedaily.com
daftandbarmy
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Researchers are suggesting that if/when "the big one" hits the Pacific North-West it could quite possibly trigger another "big one" along the San Andreas Fault causing devastation all along the Pacific Coast from BC to California.
They were drilling off Oregon. What they found could shake all of California
Scientists have uncovered evidence that megaquakes in the Pacific Northwest might trigger California’s San Andreas Fault. A research ship’s navigational error revealed paired sediment layers showing both fault systems moved together in the past. This finding hints that the next “Big One” could...www.sciencedaily.com
Meanwhile, in La La Land
The Most Doomed City in Canada
What the Big One will do to VictoriaVictorians live in one of the most doomed cities in Canada. It is a scientific certainty that the B.C. capital will be visited with a scale of civic destruction not seen in this country since the 1917 Halifax Explosion. Faced with a 50 per cent chance of a major quake happening within the next 80 years, it is more likely than not that many of the future victims of the Big One are already alive. Despite it all, Victoria often continues to act like a city that doesn’t stand on the brink of catastrophe.
The B.C. capital has the unique curse of being simultaneously threatened by several types of earthquakes at once. It is the closest Canadian population centre to the Cascadia Subduction Zone, the coming-together of two major tectonic plates that will eventually slip and yield “the Big One,” an earthquake expected to be a magnitude nine or greater. The city also sits directly atop a fault line, the Leech River fault, that can cause highly destructive shallow earthquakes. Victoria is also imperiled by “inslab” earthquakes—small slips from deep within the subduction zone that can radiate upwards.
Compounding the hazard is that Victoria is one of the oldest cities in Western Canada. The same brick buildings and historic homes that make the city a magnet for tourism are also the most vulnerable to the destructive power of an earthquake. Many of those buildings also stand atop soft soil expected to intensify the effects of any shaking.
A “Big One” level earthquake could be expected to kill up to 1,500 people in B.C., utterly dwarfing any disaster that has yet struck the province in modern times.
Earthquake damage map of Victoria in a worst case scenario. Anything coloured red is expected to suffer “complete” damage, meaning buildings will either collapse or require demolition after the fact.
OldSolduer
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Victoria people be like
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Meanwhile, in La La Land
The Most Doomed City in Canada
What the Big One will do to Victoria
Victorians live in one of the most doomed cities in Canada. It is a scientific certainty that the B.C. capital will be visited with a scale of civic destruction not seen in this country since the 1917 Halifax Explosion. Faced with a 50 per cent chance of a major quake happening within the next 80 years, it is more likely than not that many of the future victims of the Big One are already alive. Despite it all, Victoria often continues to act like a city that doesn’t stand on the brink of catastrophe.
The B.C. capital has the unique curse of being simultaneously threatened by several types of earthquakes at once. It is the closest Canadian population centre to the Cascadia Subduction Zone, the coming-together of two major tectonic plates that will eventually slip and yield “the Big One,” an earthquake expected to be a magnitude nine or greater. The city also sits directly atop a fault line, the Leech River fault, that can cause highly destructive shallow earthquakes. Victoria is also imperiled by “inslab” earthquakes—small slips from deep within the subduction zone that can radiate upwards.
Compounding the hazard is that Victoria is one of the oldest cities in Western Canada. The same brick buildings and historic homes that make the city a magnet for tourism are also the most vulnerable to the destructive power of an earthquake. Many of those buildings also stand atop soft soil expected to intensify the effects of any shaking.
A “Big One” level earthquake could be expected to kill up to 1,500 people in B.C., utterly dwarfing any disaster that has yet struck the province in modern times.
View attachment 96400
Earthquake damage map of Victoria in a worst case scenario. Anything coloured red is expected to suffer “complete” damage, meaning buildings will either collapse or require demolition after the fact.
Not to mention it has a decent chance of triggering the Yellowstone super volcano when/if it happens...Researchers are suggesting that if/when "the big one" hits the Pacific North-West it could quite possibly trigger another "big one" along the San Andreas Fault causing devastation all along the Pacific Coast from BC to California.
They were drilling off Oregon. What they found could shake all of California
Scientists have uncovered evidence that megaquakes in the Pacific Northwest might trigger California’s San Andreas Fault. A research ship’s navigational error revealed paired sediment layers showing both fault systems moved together in the past. This finding hints that the next “Big One” could...www.sciencedaily.com
I feel like the west coast of North America is in for a lot less help than they are probably expecting
KevinB
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Ash plume heights, hazards, and ashfall projections, oh my! What do volcanologists learn from ashfall maps?
How do volcanologists determine the height of eruptive plumes from Yellowstone’s past explosive eruptions? Ironically, you have to dig into the ground to get the answer.
I think the projections on USGS are very (very very) conservative.
Given the fact the Mount St. Helen’s data appears to be underrepresented.
daftandbarmy
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Anyone climbed the Barrier path before? Very steep... and geologically fragile. It holds back Garibaldi Lake, between Squamish and Whistler.
Gawd help Squamish, and points south including the east coast of Vancouver Island, if the earth sneezes
According to Quest student Greyson Herdman, the hazards of the lake are well known by the District of Squamish (DOS) but there’s not a lot the district can do. Herdman has been hired by the DOS to write a new flood report and has been examining the various water hazards the district faces.
“If the barrier were to explode or fall apart in an earthquake, the wave that would be produced by all that water flowing out of Garibaldi Lake down into Squamish would be 120 metres high,” he estimates.
“That’s what the DOS recognizes and doesn’t even talk about because we can’t do anything about it.”
www.squamishchief.com
Gawd help Squamish, and points south including the east coast of Vancouver Island, if the earth sneezes
Garibaldi Lake a ticking time bomb?
According to Quest student Greyson Herdman, the hazards of the lake are well known by the District of Squamish (DOS) but there’s not a lot the district can do. Herdman has been hired by the DOS to write a new flood report and has been examining the various water hazards the district faces.
“If the barrier were to explode or fall apart in an earthquake, the wave that would be produced by all that water flowing out of Garibaldi Lake down into Squamish would be 120 metres high,” he estimates.
“That’s what the DOS recognizes and doesn’t even talk about because we can’t do anything about it.”
Garibaldi Lake a ticking time bomb?
Quest professor receives funding to research lava barrier
www.squamishchief.com
daftandbarmy
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The 'Daily Wail' in the UK kicked off about a few tremors leading to an eruption ... rumours debunked by scientists...
“Some false reports are circulating that Mt. Rainier is suddenly showing seismic tremor activity — this is not true,” the organization wrote on its Facebook page. “The signal being referenced is actually radio interference, most likely due to rime ice buildup on the antenna of one of our seismic stations.”
Read more at: https://www.thenewstribune.com/news/local/article312981868.html#storylink=cpy
“Some false reports are circulating that Mt. Rainier is suddenly showing seismic tremor activity — this is not true,” the organization wrote on its Facebook page. “The signal being referenced is actually radio interference, most likely due to rime ice buildup on the antenna of one of our seismic stations.”
Read more at: https://www.thenewstribune.com/news/local/article312981868.html#storylink=cpy
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Parts of Victoria could use an enema like that….Meanwhile, in La La Land
The Most Doomed City in Canada
What the Big One will do to Victoria
Victorians live in one of the most doomed cities in Canada. It is a scientific certainty that the B.C. capital will be visited with a scale of civic destruction not seen in this country since the 1917 Halifax Explosion. Faced with a 50 per cent chance of a major quake happening within the next 80 years, it is more likely than not that many of the future victims of the Big One are already alive. Despite it all, Victoria often continues to act like a city that doesn’t stand on the brink of catastrophe.
The B.C. capital has the unique curse of being simultaneously threatened by several types of earthquakes at once. It is the closest Canadian population centre to the Cascadia Subduction Zone, the coming-together of two major tectonic plates that will eventually slip and yield “the Big One,” an earthquake expected to be a magnitude nine or greater. The city also sits directly atop a fault line, the Leech River fault, that can cause highly destructive shallow earthquakes. Victoria is also imperiled by “inslab” earthquakes—small slips from deep within the subduction zone that can radiate upwards.
Compounding the hazard is that Victoria is one of the oldest cities in Western Canada. The same brick buildings and historic homes that make the city a magnet for tourism are also the most vulnerable to the destructive power of an earthquake. Many of those buildings also stand atop soft soil expected to intensify the effects of any shaking.
A “Big One” level earthquake could be expected to kill up to 1,500 people in B.C., utterly dwarfing any disaster that has yet struck the province in modern times.
View attachment 96400
Earthquake damage map of Victoria in a worst case scenario. Anything coloured red is expected to suffer “complete” damage, meaning buildings will either collapse or require demolition after the fact.
OldSolduer
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So you are saying this is really bad....Anyone climbed the Barrier path before? Very steep... and geologically fragile. It holds back Garibaldi Lake, between Squamish and Whistler.
Gawd help Squamish, and points south including the east coast of Vancouver Island, if the earth sneezes
Garibaldi Lake a ticking time bomb?
According to Quest student Greyson Herdman, the hazards of the lake are well known by the District of Squamish (DOS) but there’s not a lot the district can do. Herdman has been hired by the DOS to write a new flood report and has been examining the various water hazards the district faces.
“If the barrier were to explode or fall apart in an earthquake, the wave that would be produced by all that water flowing out of Garibaldi Lake down into Squamish would be 120 metres high,” he estimates.
“That’s what the DOS recognizes and doesn’t even talk about because we can’t do anything about it.”
Garibaldi Lake a ticking time bomb?
Quest professor receives funding to research lava barrier
daftandbarmy
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It would probably result in a thousand or so dead, mostly in Squamish, depending on how/if the Barrier failure occurs of course.
Brad Sallows
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Temba, his arms wide, quietly amassing real estate on tectonically stable high ground...
daftandbarmy
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The inconvenient truth comes out yet again...
IBC urges federal action to improve preparedness and ensure financial resilience after a catastrophic quake
VANCOUVER, BC, Nov. 20, 2025 /CNW/ - British Columbia's newly released Disaster and Climate Risk and Resilience Assessment (DCRRA) report highlights the staggering toll a major earthquake would have on the province.
The report finds that 92% of the population of the province and 90% of provincial businesses are exposed to seismic risk. It goes on to note a magnitude-9 earthquake would:
For decades, Canada's insurers have sounded the alarm about the impacts a devastating earthquake would have on British Columbia and the broader Canadian economy, and with good reason: Natural Resources Canada estimates that the province has a 30 per cent chance of experiencing a significant earthquake within the next 50 years.
The property and casualty (P&C) insurance industry has a strong stake in Canada's earthquake preparedness. While the industry is among the most well-capitalized globally, a catastrophic earthquake would exceed the capacity of even the most resilient insurance system and trigger ripple effects across the economy. IBC has long advocated for a federal solution that would allow the government to step in alongside insurers following a catastrophic earthquake – protecting people, businesses, and the economy while supporting recovery. Canada remains the only G7 nation with significant earthquake risk that lacks such a mechanism.
"A catastrophic earthquake would threaten the stability of Canada's financial system and stands among the greatest risks to our economic resilience," said Liam McGuinty, Vice-President, Federal Affairs, IBC. "That's why IBC welcomed the recent federal budget's acknowledgment of the earthquake risk facing Canadians and the Canadian economy."
www.newswire.ca
New Report Shows 92% of British Columbians Face Earthquake Risk
IBC urges federal action to improve preparedness and ensure financial resilience after a catastrophic quake
VANCOUVER, BC, Nov. 20, 2025 /CNW/ - British Columbia's newly released Disaster and Climate Risk and Resilience Assessment (DCRRA) report highlights the staggering toll a major earthquake would have on the province.
The report finds that 92% of the population of the province and 90% of provincial businesses are exposed to seismic risk. It goes on to note a magnitude-9 earthquake would:
- Result in total economic losses of $128 billion;
- Reduce economic growth by half and result in 43,700 jobs lost over the subsequent 10 years; and
- Bring the potential for human and economic devastation that exceeds the combined impact of all disasters experienced in the province over the past 200 years.
For decades, Canada's insurers have sounded the alarm about the impacts a devastating earthquake would have on British Columbia and the broader Canadian economy, and with good reason: Natural Resources Canada estimates that the province has a 30 per cent chance of experiencing a significant earthquake within the next 50 years.
The property and casualty (P&C) insurance industry has a strong stake in Canada's earthquake preparedness. While the industry is among the most well-capitalized globally, a catastrophic earthquake would exceed the capacity of even the most resilient insurance system and trigger ripple effects across the economy. IBC has long advocated for a federal solution that would allow the government to step in alongside insurers following a catastrophic earthquake – protecting people, businesses, and the economy while supporting recovery. Canada remains the only G7 nation with significant earthquake risk that lacks such a mechanism.
"A catastrophic earthquake would threaten the stability of Canada's financial system and stands among the greatest risks to our economic resilience," said Liam McGuinty, Vice-President, Federal Affairs, IBC. "That's why IBC welcomed the recent federal budget's acknowledgment of the earthquake risk facing Canadians and the Canadian economy."
New Report Shows 92% of British Columbians Face Earthquake Risk
/CNW/ - British Columbia's newly released Disaster and Climate Risk and Resilience Assessment (DCRRA) report highlights the staggering toll a major earthquake...
www.newswire.ca
