#megathrust
This is a VERY large earthquake, possibly/probably among the 10 largest ever recorded. A clear subduction zone megathrust event. And it is another M>8.5 event with a notable foreshock (the recent M7.4 in same location), like Tohoku in 2011.
July 30, 2025 at 12:36 AM
One word: megathrust
December 16, 2025 at 7:23 AM
Would the TABD solution for Hurricane Maria trigger a Cascadia Megathrust earthquake? It's complicated. /s
September 6, 2026 at 2:17 PM
Also in googling said earthquake, I discovered that the technical name for The Big One is a "megathrust event." I can see why they went with The Big One
July 20, 2026 at 3:54 PM
Don’t need to get ready if you stay ready and the Aleutian-Alaska Megathrust Fault does exactly what it says on the can.
September 24, 2026 at 1:41 AM
"megathrust motions" oh my💥
two bodies grinding against each other, striking and slipping, generally do not cause tsunamis, which are associated with megathrust motions of one body plunging beneath another and now we see why geologists were among the first to join this notoriously horny website
December 5, 2024 at 8:21 PM
MASSIVE TECTONIC PLATES COLLISION CAUSING DEVASTATING MEGATHRUST EARTHQUAKE
September 1, 2024 at 5:55 AM
🧪⚒️

A M6.8 earthquake struck offshore New Zealand's South Island yesterday. Fortunately, shaking was not damaging, and the associated tsunami was quite small (~10 cm).

The earthquake occurred along the enigmatic Puysegur Trench. Was it caused by slip on the megathrust? We take a look.
M6.8 earthquake rattles New Zealand's South Island, raises minor tsunami
A megathrust event, or in the overriding plate? We take a look.
earthquakeinsights.substack.com
March 25, 2025 at 7:24 PM
Our new paper on earthquake records in the Cascadia Subduction Zone is out today!

The goal of our work is to reduce uncertainty in the timing and frequency of large earthquakes by investigating how and where subduction earthquake-triggered deposits are formed. 🧪⚒️🌊

www.science.org/doi/10.1126/...
Widespread abyssal turbidites record megathrust earthquake-triggered landslides and coseismic deformation in the Cascadia subduction zone
Lower slope failures produce abyssal turbidites that record shaking and coseismic deformation during megathrust earthquakes.
www.science.org
January 14, 2026 at 9:31 PM
CNN Indonesia
BMKG reveals worst scenario Megathrust, earthquake M9.2-Tsunami 10 meters
via CNN Indonesia
(Translated)
CNN Indonesia
BMKG reveals worst scenario Megathrust, earthquake M9.2-Tsunami 10 meters
project-push.tk.gg
September 24, 2026 at 7:32 AM
Tsunami waves of the M8.8 Kamchatka megathrust #earthquake are now arriving at Crescent City, CA. Current peak to trough wave height is about 1 meter.
#tsunami ⚒️🧪
July 30, 2025 at 8:21 AM
Sustainable Switch: Russia's quake caused by a 'megathrust fault' reut.rs/4oq0bnO
Sustainable Switch: Russia's quake caused by a 'megathrust fault'
Breaking down the ripple effects of an earthquake off Russia's Far Eastern Kamchatka which was felt as far away as Japan, French Polynesia and Chile.
reut.rs
August 4, 2025 at 4:25 PM
Das #Erdbeben in #Japan ist n bisschen anders als die meisten schweren Beben, die in Japan auftreten. Das war nämlich nicht an der Plattengrenze, wo eine Erdplatte abtaucht, sondern an einer Verwerfung in der Platte darüber, die durch die Kollision gestaucht wird.
Also kein Megathrust wie sonst.
January 1, 2024 at 10:23 AM
its not time for that yet though. i am still waiting for the cascadia megathrust earthquake
August 31, 2026 at 9:36 PM
A good reminder for us in the PNW, as well - when the megathrust hits, preparedness will save lives.
If you're a Californian and noticing the nasty horrific Quake shit, as you are...

It's a good time to review your Earthquake survival kit.

You should have AT BARE MIN....
June 26, 2026 at 2:54 PM
hmm. i don’t like it
Nankai megathrust earthquakes - Wikipedia
en.wikipedia.org
April 20, 2026 at 10:50 AM
daily reminder we're all gonna fucking die in the cascadia megathrust event
ponder.ooo ponder @ponder.ooo · Aug 18
this city is not ready for the earthquake
August 18, 2026 at 8:43 PM
Call me a subduction zone megathrust earthquake the way I
July 30, 2025 at 1:17 AM
The Earthquake Insights article about the Mw8.8 Kamchatka earthquake is, as always, really informative. ⚒️🧪 #geology

open.substack.com/pub/earthqua...
M8.8 earthquake strikes offshore Kamchatka
A dangerous subduction megathrust ruptures once again
open.substack.com
July 30, 2025 at 6:27 AM
I mean to think there was enough deep-rich tropical moisture to trigger a tornado that violent, that far north... that's about as rare as a megathrust earthquake in the Gulf of Trump!
June 9, 2026 at 6:17 AM
megathrust is crazy
October 23, 2025 at 7:58 PM
what if... a disaster novella or longer set in the *future*

imagine: Cascadia Megathrust Earthquake, 2302 AD
June 13, 2026 at 9:04 PM
In addition to many M7+ earthquakes, this boundary has also hosted half a dozen M8+ earthquakes. Red circles mark the epicenter above the site where fault rupture began, and yellow shows the area on the megathrust fault that ruptured.
July 16, 2025 at 11:13 PM
Washington Post covered our new study mapping the Cascadia subduction megathrust in much better detail than before. Changes our understanding of key apsects of megathrust geometry and segmentation. Non-paywalled link: wapo.st/4cca8hy ⚒️⛴️
Scientists map one of Earth’s top hazards in the Pacific Northwest
A catastrophic earthquake and tsunami will one day hit the Pacific Northwest as tectonic plates slip at the Cascadia subduction zone off the coast.
wapo.st
June 8, 2024 at 5:45 PM
⚒️ 🧪

A M8.8 earthquake just ruptured the subduction zone offshore Russia’s Kamchatka peninsula. This is one of the world’s truly huge earthquakes, and a triggered tsunami is currently traveling across the Pacific ocean.

This same fault ruptured on July 20th in a M7.4, and last August in a M7.1.
M8.8 earthquake strikes offshore Kamchatka
A dangerous subduction megathrust ruptures once again
earthquakeinsights.substack.com
July 30, 2025 at 4:05 AM