Pacific Northwest Seismic Network
@pnsn1.bsky.social
7.6K followers 11 following 120 posts
The Regional Seismic Network for Washington and Oregon. We operate almost 700 seismic stations and are the authoritative source for information about earthquakes in both states.
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pnsn1.bsky.social
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
Seismogram showing ground motion at T-Mobile Park for game-winning single by Seattle Mariner Jorge Polanco, JP Crawford scores! MLB poster for PostSEAson 2025 that reads Seis the Moment with a small seismogram between the Seis and the The.  Has website for PNSN seismograms of the game. mariners.pnsn.org
pnsn1.bsky.social
RIVAS RUMBLE! Single to Left brings in Polanco to tie up at 2-2!

# SeizeTheMoment

@Mariners @TMobilePark @FoxSports
pnsn1.bsky.social
Hey Mariners fans! We installed the Richter Rizzs seismic station at T-MobilePark yesterday. You can track the energy in the ballpark live at mariners.pnsn.org! Let's rock T-Mobile Park! #SeisTheMoment #SeizeTheMoment
Seattle Mariners lead radio announcer Rick Rizzs is kneeling in front of banners that state Richter Rizzs and are in front of a green seismometer with a Pacific Northwest Seismic Network sticker on it. 
MLB poster for PostSEAson 2025 that reads Seis the Moment with a small seismogram between the Seis and the The. 
5 minutes of a seismogram from the seismic sensor installed at T-Mobile Park.
pnsn1.bsky.social
Happy #FieldworkFriday Mariners fans! Cal Raleigh said he could feel the ground shaking in Game 2, so PNSN came to take a closer look! We installed a seismometer right here in T-Mobile Park to record seismic energy during game 5. Seattle, we want to feel this place rocking! #SeizeTheMoment
PNSN install team standing along dugout with the empty green seats of TMobile Park behind them. PNSN Field Engineer installing seismic instrument on concrete ground. Tool bag in foreground, black wall in background. Looking over the right shoulder of PNSN Field Engineer working on laptop with green seismic instrument in background. Green seismic instrument on ground, Grey and blue cable extending from rear.
pnsn1.bsky.social
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.
Image with Dubs the Husky and PNSN Team Member doing a drop cover and hold on drill. Text about ShakeOut noting date (October 16, 2025) and link (shakeout.org). Bottom part of image shows cartoon Drop, Cover, Hold On panels.
pnsn1.bsky.social
PRELIM Earthquake: M3, 61.7 km S from Port Angeles, WA at 2025/10/08 17:56 PDT
http://www.pnsn.org/event/62191312
Did You Feel It?: https://zpr.io/yZSLb6cACnup
Map with a star marker for the magnitude 3 earthquake located 61.7 km S from Port Angeles, WA
pnsn1.bsky.social
Happy #FieldworkFriday! In case you missed these stunning views of the BURLY install from a few weeks ago, take a look at a few more of the photos taken by UW Photographer Mark Stone. Check out the whole collection here: uwphotos.smugmug.com/UPhoto-Job-A...
The sun is low on the horizon, shining over a mountain ridge where a few field technicians work on a seismic station. In the distance are further criss-crossing ridges. Field engineers working on silver swing set seismic power box. Field engineers attaching cable to silver seismic sensor. Field engineer working on front of solar panels and one field engineer on ladder behind it. Forest in background.
pnsn1.bsky.social
Who’s ready to #ShakeOut!? @DubsUW sure is! The Great @ShakeOut earthquake drill is just 2 weeks away, on October 16. Every year, millions across the globe participate. When the ground starts shaking, the best way to protect yourself is simple: DAWG (Drop), COVER, and HOLD ON!
The University of Washington husky mascot, DUBS, sits on an office chair with a computer screen behind him reading "Get Ready to ShakeOut." A banner at the top encourages viewers to join the Great ShakeOut, and three graphics at the bottom explain how to Drop, Cover, and Hold On.
pnsn1.bsky.social
Happy #FieldworkFriday, and good morning from Mt. Olympus! The field team visited station OSD in Olympic National Park this week to get it back online. This remote site required a helicopter ride to get to, but the effort paid off with a successful visit and beautiful views.
pnsn1.bsky.social
Happy #FieldworkFriday! What a treat it is having a professional photographer around! UW photographer Mark Stone joined our field team to document the full install at site BURLY. The site is now up and running, and all photo credit and thanks go to Mark Stone and UW Photography.
Silhouette of the upper body of one of the field staff looking off into a sunset. Landscape showing several green mountain ranges, with Mt. Rainier in the far background. A rain shower descends in the distance over the mountains, and a rainbow peeks out from the clouds on the right. Shot taken looking up from a trench dug into the dirt, the focus is on the roots coming out of the ground. In the background and blurred, one of the field staff stands over the trench with a power tool in his hand. Four members of the field staff stand in front of the completed station, smiling. Behind them are rolling green hills and a slightly cloudy blue sky.
pnsn1.bsky.social
PRELIM Earthquake: M3.1, 12.9 km SE from Port Townsend, WA at 2025/09/15 18:29 PDT
http://www.pnsn.org/event/62189991
Did You Feel It?: https://zpr.io/ZT2M4acwvfvM
Map with a star marker for the magnitude 3.1 earthquake located 12.9 km SE from Port Townsend, WA
pnsn1.bsky.social
Happy #FieldworkFriday! At station TEHA this week we saw a great example of one type of the cultural noise that our stations record when a Chinook helicopter flew over as we were showing off our QuickShake web tool to school admins and reporters from the Tacoma News Tribune.
pnsn1.bsky.social
Happy #FieldworkFriday! Watch out - helicopter incoming! Last month, the field crew at MNRL employed the use of several helicopter trips to take heavy materials in and out at the remote site. With their help, field staff saved their backs hauling things in and were able to get some great shots!
pnsn1.bsky.social
Happy #FieldworkFriday! It takes a bit of determination sometimes to visit our sites - and it's not all just climbing mountains or riding in helicopters. The access gate for station REDMT is its own beast, shown clearly here by field engineer Nicholas. What a workout!
pnsn1.bsky.social
Happy #FieldworkFriday! Rain or shine, our field staff are on the job! They endured the whole breadth of weather the PNW has to offer while installing site MNRL earlier this month. The result of all this hard work was a beautiful new site ready to report back to us at the PNSN.
Three fieldwork technicians smile and pose in front of Mt. St. Helens in the background. Several field technicians work on the site MNRL. Two are working on the ground in a trench, while the others are climbing on the metal frame of the site itself. It is very cloudy with dense fog in the background. Four field technicians work on digging a trench on top of a hill. One uses a jackhammer while the others have shovels. It is a sunny day with some white clouds. One field technician stands next to a trench dug into the ground with tubing running alongside it. He looks off into the distance at some thick clouds rolling over large forested hills.
pnsn1.bsky.social
PRELIM Earthquake: M3, 2.4 km SE from Mount Vernon, WA at 2025/08/21 01:01 PDT
http://www.pnsn.org/event/62174381
Did You Feel It?: https://zpr.io/MDQFxEMhGFDi
Map with a star marker for the magnitude 3 earthquake located 2.4 km SE from Mount Vernon, WA
pnsn1.bsky.social
PRELIM Earthquake: M3.7, 52.9 km N from Forks, WA at 2025/08/18 19:17 PDT
http://www.pnsn.org/event/62173216
Did You Feel It?: https://zpr.io/824MsaTgfmtz
Map with a star marker for the magnitude 3.7 earthquake located 52.9 km N from Forks, WA
pnsn1.bsky.social
Happy #FieldworkFriday! We didn't have to worry too much about this NetQuakes instrument, as apparently it had a cute calico guardian watching over! Many NetQuakes stations are in homes, living alongside both human & animal residents while they report data back to us at the PNSN.
A very cute calico cat lays behind the monitoring instrument, both nestled under the stairs in a basement. A calico cat walks behind the NetQuakes monitoring instrument box. It is placed under the stairs in a basement. A calico cat lies behind the Netquake monitoring instrument box under the stairs in a basement.
pnsn1.bsky.social
Happy #FieldworkFriday! Staff recently went out to site RADR, where the wildflowers are blooming in their full summer glory. Some of that brush needed to be cleared, however, so field staff conquered that as well as worked on the radios.
Front facing view of the solar panels attached to the RADR site. Wildflowers and brush surround the panels. It is a clear blue day. The solar panels of site RADR sit on a metal frame, pointing towards the right. Wildflowers and brush surround the site. A large metal radio tower sits on top of a small grey building. A metal chainlink fence surrounds the building, and a white truck is parked outside of it. A man stands at the gate of the fence, turned away. A large brown dog stands at his feet. Site RADR faces away, the backs of the solar panels are shown mounted to the metal frame. Behind the station sits a grey box with more solar panels facing away, this is the GPS station. Both stations are surrounded by brush and wildflowers, and there are rolling green hills in the distance.
pnsn1.bsky.social
Seismologists here at the PNSN have been keeping up with picking and analyzing the data from the Mt. Rainier earthquake swarm. Read more about it on our newly updated Seismo blog at:
www.pnsn.org/blog/2025/07...
pnsn1.bsky.social
PRELIM Earthquake: M3, 3.7 km SSE from Poulsbo, WA at 2025/08/02 09:20 PDT
http://www.pnsn.org/event/62164416
Did You Feel It?: https://zpr.io/uw4a5FUmgmGT
Map with a star marker for the magnitude 3 earthquake located 3.7 km SSE from Poulsbo, WA