The NYTimes article about NSF dismantling the OOI system wasn't clear about what is actually happening. Yes, it's a really bad move for oceanography, but the part of OOI that monitors the Cascadia subduction zone is NOT being descoped. I went on KING5 News to discuss. youtu.be/NkTk60rxHVs?...

A massive rupture on the Seattle fault, which runs right under the Seattle metro area, could threaten millions and cause billions of dollars of damage. But it’s not just the biggest quakes scientists are concerned about. 🧪 eos.org/articles/on-...

Since around midnight PDT, there's been quite an active swarm of earthquakes at the Juan de Fuca Ridge, about 250 miles offshore WA. With 18 detected so far, up to M4.2, locations show that these are NOT at the Axial Seamount Volcano. They do not pose a hazard to the PNW onshore. ⚒️

Excellent article today in the NYTimes about the need for tsunami evacuation structures in the PNW.

Finally a convincing explanation for the existence of blueschist and eclogite belts. ⚒️

Magnitude 6.3 thrust earthquake in the Atacama area of central Chile this morning. This is in the area of a 1922 M8.4. Most subduction quakes are not foreshocks, but chances of a larger event in the short term are now a bit higher, statistically speaking. 👀 ⚒️ earthquake.usgs.gov/earthquakes/...

15 years ago right about this time of day, the Tohoku-oki earthquake was unleashed, with as much as 100 meters of fault slip documented at the Japan Trench. The resulting tsunami rocked Japan and the world, claiming ~18,000 lives. It was one of only 5 M9 quakes ever recorded. ⚒️

Ok, journals don't really appear as bound paper magazines anymore, but it's still pretty cool to get the cover image! Anna Ledeczi's paper on our newly identified paleo-megathrust in the heart of Olympic National Park is now formally out. Read it here: ⚒️ pubs.geoscienceworld.org/gsa/gsabulle...

Did you know that the Feb. 28, 2001 Nisqually earthquake was the costliest quake in the past 30 years of US history? On its 25th anniversary, the Puget Sound region isn't prepared for the inevitable next one. Here's my take for the @seattletimes-rss.bsky.social www.seattletimes.com/opinion/befo...

25 years ago, PNSN seismologists rolled into action to respond to the M6.8 Nisqually earthquake. Join us on Feb 24, 6:30-8 PM for a discussion and Q&A with earthquake experts on what we’ve learned since—and what we need to do to get ready for the next one: www.eventbrite.com/e/25-years-s...

SEAHAWKS ARE GOING TO SUPER BOWL LX!!!! Seattle Seahawks beat the LA Rams, 31 - 27! Hopefully you got to follow along and catch each incredible play of this nail-biting game in real time, but if not then find the whole-game archive at: pnsn.org/data-researc...

We're ready for you, 12s! The PNSN's field staff revisited Lumen Field this week to ensure our stations were functioning correctly so we can monitor all of the fan generated energy from today's Seahawks game vs the Rams. Make sure to follow our live seismogram during the game at seahawks.pnsn.org!

Rashid Shaheed got things started right away with an opening kickoff return touchdown, the 12s rocked the house, and the Seahawks never looked back! SEAHAWKS WIN 41-6 and move onto the NFC Championship Game! @seahawks @nfl

Follow along with ground motions at Lumen Field as the Pacific NW Seismic Network @pnsn1.bsky.social livestreams our seismometers in and next to Lumen Field! Seahawks up 17-6 late in 2nd qtr. Stream: seahawks.pnsn.org

TOUCHDOWN SEAHAWKS! Rashid Shaheed returns the opening kickoff for a touchdown! Great start, 12s! @seahawks @nfl @nflonfox

It looks like northern Japan coastal ports have seen tsunami waves arriving already, but so far just 30-70 cm high. Later-arriving peaks could be higher, but that is good news that the ultimate size will be moderate. I hope so! Damage reports sketchy so far, but also some reason for optimism.

I love this. @pnsn1.bsky.social

Some false reports are circulating that Mt. Rainier is suddenly showing seismic tremor activity — this is not true. The signal being referenced is actually radio interference, most likely due to rime ice buildup on the antenna of one of our seismic stations.

NOAA cut funding for critical parts of the tsunami and earthquake detection system in Alaska, primarily in the Aleutians. I spoke to Wash Post about negative impacts. But, hey, what are the chances of a deadly tsunami being triggered in Alaska? (Gift article, not behind paywall) ⚒️ wapo.st/4qKvavQ

This visualization of Japan’s M6.8 yesterday is phenomenal. Offshore S-net detected it and issued earthquake alert before any land station detection. Numbered circles show JMA intensity (not same as MMI). Offshore is where we need to be in Cascadia as well.

Today's Japan M6.8 is in an interesting spot: the zone of "missing" slip just north of the very large shallow rupture in the 2011 M9.

Quoted supporting our counterparts and friends at the Alaska Earthquake Center. The cost of the U.S. tsunami warning and mitigation effort is really a pittance. None of it has ever been adequately funded in any administration, and now things are worse. ⚒️ www.nbcnews.com/science/tsun...

Geno Suarez hits a Grand Slam to put the Mariners up 6-2 and seal Game 5 of the ALCS! "The City is Shaking!" #SeizeTheMoment

You feel that Seattle?! Check out that Polanco P-Wave! Polanco Game Winning Single, Crawford Scores, MARINERS WIN!! @Mariners are Toronto Bound! @Tmobilepark @FoxSports #SeisTheMoment #SeizeTheMoment

Dubs is ready to #ShakeOut... Are you? We’re just ONE WEEK away from the Great ShakeOut earthquake drill on October 16! Join Dubs in practicing Drop, Cover, and Hold On. Register your participation and explore all the ways you can boost awareness for this event at shakeout.org.

Interesting study! And this animation blending the model with the observed SWOT image is gorgeous.

Tsunami evacuation systems in Kochi City and Kure town, Shikoku Island. The 1946 Nankai Trough earthquake and tsunami swept ashore here, flooding all these areas - only the most recent of many over the past ~1300 years. The vertical evac towers are really impressive.

Yokonami melange, a paleo-megathrust, and so, so much chert, near Kure, Shikoku Island, Japan

We recently spent 2 weeks doing field work in a remote part of Olympic National Park, studying what we think is another part of the 'fossil' subduction plate boundary fault: a paleo-megathrust. The terrain was rugged and challenging, and the rocks were rewarding. Here's a taste. ⚒️

And Steve Malone is still analyzing volcanic earthquakes at PNSN in 2025!

This eruption is an interesting … coincidence?? Seismically triggered eruptions are not really my specialty, but I answered the phone on Sunday morning when @npr.org’s @gbrumfiel.bsky.social called, so here you go: Russian volcano erupts days after monster quake shakes www.npr.org/2025/08/03/n...

Here is @noaa.gov's model of the tsunami propagation from the people at PMEL, initiated with the earthquake location and then calibrated by the DART buoy observations. There is a wealth of great information at their website (link in thread). (1/6) ⚒️ www.youtube.com/watch?v=oOtJ...

Went on CBS Mornings today to talk about the tsunami and how it all unfolded. They had good questions. www.cbsnews.com/video/why-a-...

The M8.8 off Kamchatka appears to be the largest earthquake ever recorded that apparently didn't kill anyone. That's really remarkable, if true. ⚒️

I am glad @evanbush.bsky.social used this quote in this excellent @nbcnews.com story. This is a key message I really wanted to get across in interviews today. Article here: www.nbcnews.com/science/scie...

Wednesday evening, tsunami waves are still sloshing around at Port Angeles, WA ... 18+ hours after they first arrived. Source: @noaa.gov tide gauge website. ⚒️

NEW: A magnitude 8.8 megaquake blasted tsunami waves across the Pacific today. Here's everything you need to know about it, including: -Why it happened -Why it generated a widespread tsunami -Why the timing of this megaquake is a bit weird Me, for NatGeo www.nationalgeographic.com/science/arti...

Another earthquake story from @sciam.bsky.social by the always-excellent @squigglyvolcano.bsky.social explaining why the tsunami from the Russia quake wasn't as huge as the one from the 2011 Japan quake, for example. 🧪

Today's M8.8 (orange circle) and the 1952 M9.0 epicentral locations, separated by only 73 years. I wouldn't have thought that possible! Average recurrence intervals don't tell the full story. ⚒️

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.

I'm excited to announce that we are seeking an External Engagement Lead for the Pacific Northwest Seismic Network! PNSN is the trusted authority on earthquakes and related topics in the PNW. Help us shape earthquake preparedness, advocacy for resilience, and hazards information all across Cascadia.

The 2025 earthquake swarm is now the largest one ever recorded at Mt. Rainier. It exceeds even the 2009 swarm in cumulative magnitude and event number and rate. >340 quakes located by @pnsn1.bsky.social so far, with 1000s more detected. Still not showing signs of unrest. www.usgs.gov/observatorie...

Here is a good non-technical article explaining what is going on at Mt. Rainier today. Biggest swarm since 2009; not rising to the level of "unrest" and not concerning at this point. But very interesting and a sign that Rainier is absolutely an active volcano! ⚒️ www.seattletimes.com/seattle-news...

On 7/8/25, the USGS & PNSN detected a swarm of earthquakes at Mount Rainier starting at 1:29AM PDT. Currently, there is no indication that the level of activity is cause for concern, alert level & color code for Mount Rainier remain at GREEN/NORMAL. CVO Statement: volcanoes.usgs.gov/hans-public/...

Good news, I guess, but the fact that this is a real story about the government of the United States of America is absolutely bonkers.

Absolutely speechless as this press conference basically ignores that NSF is already working, living, loving this building. www.youtube.com/watch?v=Zdct...

I want to be super clear here: the main subduction fault (the “megathrust”) definitely exists! This article is about a different fault that branches (“splays”) off of it.

The PNW states use future subduction quake/tsunami scenarios to assess risk to the coast. The most-used scenario today involves a hypothetical massive splay fault extending all the way north to south. With new seismic reflection data, we have shown that the 'megasplay' is mostly non-existent. 1/4

CNN on the damage being done to natural hazard monitoring by this misguided administration. I'd say that one quote from me feels a little off – I don't expect Cascadia to be the "largest" we've ever seen on the planet – but the gist is on target. www.cnn.com/2025/05/20/c... ⚒️