PRELIM Earthquake: M3, 35.4 km WSW from Centralia, WA at 2025/12/19 15:29 PST http://www.pnsn.org/event/62210922 Did You Feel It?: https://zpr.io/HfZ5VRG8XZyP

For #FieldworkFriday, we want to extend our thoughts to those in Stehekin and throughout Washington who have been impacted by recent flooding. During our installation of DREAM this summer we met so many friendly, welcoming & helpful people in that unique and resilient community.

PRELIM Earthquake: M3.3, 3.8 km W from Concrete, WA at 2025/12/15 08:29 PST http://www.pnsn.org/event/62209782 Did You Feel It?: https://zpr.io/wqAk46Nqzrx9

PRELIM Earthquake: M3.3, 3.8 km W from Concrete, WA at 2025/12/15 08:29 PST http://www.pnsn.org/event/62209782 Did You Feel It?: https://zpr.io/wqAk46Nqzrx9

PRELIM Earthquake: M3.1, 4.2 km W from Concrete, WA at 2025/12/15 07:06 PST http://www.pnsn.org/event/62209737 Did You Feel It?: https://zpr.io/6PBUecTHfkc8

Happy #FieldworkFriday! PNSN.org has a new look and tons of new features, including unique stations pages. These pages have site info, a map, a QuickShake seismogram, a list of recently detected quakes, and in some cases a handful of photos. Check out the page for RCM here: pnsn.org/station/RCM

We’re excited to share that the newly redesigned PNSN.org will officially go live on Thursday, December 11th. Our team has been working behind the scenes to modernize the site while keeping the tools and resources our community relies on.

Happy #FieldworkFriday! It can be challenging to work in the snow, and also a whole lot of fun! We left our mark in view of the White Pass Ski Area High Camp webcam this week after a trip to WPEQ. The lettering looks even better in night vision with Mt Rainier in the background.

Happy #FieldworkFriday and belated Thanksgiving! The PNSN would like to share our gratitude for our site hosts, partners, staff, and dedicated field team from UO, UW, and USGS. With cooperation we're able to maintain a reliable network of 700+ stations across the PNW.

PRELIM Earthquake: M3.5, 12.6 km S from Penticton, BC at 2025/11/27 23:19 PST http://www.pnsn.org/event/62215471 Did You Feel It?: https://zpr.io/gexDWw5Y3Ut2

PRELIM Earthquake: M3.4, 52.2 km NE from Forks, WA at 2025/11/27 09:15 PST http://www.pnsn.org/event/62215426 Did You Feel It?: https://zpr.io/sHyvBUNtru8P

PRELIM Earthquake: M3.4, 17.4 km NNW from Salem, OR at 2025/11/23 07:58 PST http://www.pnsn.org/event/62214776 Did You Feel It?: https://zpr.io/GpVzH8fwXmnE

Happy #FieldworkFriday! Mt. Rainier’s highest, most rugged station, STAR, made headlines this week after its signals were misinterpreted as unusual activity. In reality, the data reflect cold and icy conditions at 11,000' of elevation, not volcanic unrest.

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.

Happy #FieldworkFriday! At OTR, on the Olympic Peninsula, our comms tower was wiggling when we climbed it, so we swapped all the bolts and really wrenched them down. This will ensure a stable tower and a safe worksite for years to come. It's the little details that matter!

Happy #FieldworkFriday! As we trudge through fall and approach winter the field team finds themselves fighting against the sunset. Add in the 1hr loss of light from Daylight Savings Time last weekend and we know we’re not the only folks working in the twilight hours.

Happy #fieldworkfriday and Happy Halloween! Still picking out a costume? Check out some suggestions modeled by our talented PNSN field staff. Maybe a soggy construction worker? A peak-obsessed helicopter pilot? A granola backcountry hiker?

PRELIM Earthquake: M3.4, 86.3 km W from Astoria, OR at 2025/10/29 07:01 PDT http://www.pnsn.org/event/62208971 Did You Feel It?: https://zpr.io/uWZ5EBETdKWP

Happy #FieldworkFriday! Last week was packed! But despite a full week of monitoring @Mariners.com games to the Great ShakeOut earthquake drill, our field team still headed out. These cows at PASS didn't know a thing about the Mariners or ShakeOut, but were glad we came for a visit.

PRELIM Earthquake: M3.1, 37.5 km N from Victoria, BC at 2025/10/21 05:30 PDT http://www.pnsn.org/event/62196992 Did You Feel It?: https://zpr.io/4tRirXXRwg4T

What's bigger than a Geno Suárez 2nd Inning Home Run to take a 1-0 lead? An 8th Inning GRAND SALAMI to put the @Mariners up 6-2! This visual comparison of both seismograms shows the moment's magnitude of Geno's Grand Slam was 3x bigger than his first homer. #seizethemoment @mlb

Live seismogram from station RIZZS of Geno's Grand Salami with synced audio from Rick Rizzs on the @seattlesports710 radio broadcast! The @mariners and PNSN named the station in @TMobilePark after the one and only Rick Rizzs because of the energy he brings to the broadcast. # SeizeTheMoment

Cal's HR was BIG... Geno's Grand Slam was even BIGGER! 30min seismogram from the end of Game 5. 🔱 Mariners Win!!! "The City is Shaking!" #SeizeTheMoment @Mariners @MLB @TMobilePark @FoxSports

Mariners Win!!! "The City is Shaking!" # SeizeTheMoment @Mariners @MLB @TMobilePark @FoxSports

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

Cal Raleigh ties it up 2-2 with a BIG home run! # SeizeTheMoment @Mariners @TMobilePark @FoxSports

Geno Suarez HOME RUN! Mariners up 1-0! # SeizeTheMoment @Mariners @TMobilePark @FoxSports

Happy #FieldworkFriday! Our experiment at @TMobilePark has been awesome, but we really want to see the seismic record of an ALCS Game 5 WIN. One more time @Mariners Fans, BRING THE ENERGY! Follow along at mariners.pnsn.org #seizethemoment @mlb @foxsports

Never Forget #Believe #SeizeTheMoment

@PNSN is onsite at T-Mobile Park. Check out the seismogram from Naylor’s 2nd inning home run! LET’S GO @Mariners mariners.pnsn.org

PNSN is back at the ball park for game four of the ALCS! Root for the @mariners and watch our live seismogram streaming from T-Mobile Park. Here: mariners.pnsn.org #SeizeTheMoment

Did you DROP, COVER, and HOLD ON yet today? If not, don't worry - it's never too late to practice earthquake safety! Try doing your own drill at your home, office, or school and take part in the #GreatShakeOut alongside millions of others.

It's time! Where ever you are DROP, COVER, and HOLD ON. Take part with people all over the world in the Great ShakeOut and practice your earthquake safety!

Today at 10:16am is the Great Shakeout, and Dubs is ready to Drop, Cover, and Hold On! Practice your earthquake safety alongside Dubs and millions of others in the biggest earthquake drill in the world. For more information on the Great Shakeout, go here: www.shakeout.org/index.html

Julio Rodriguez HOME RUN! You don't need to be a scientist to see a BIG moment like that. Great start to game 3! # SeizeTheMoment @Mariners @TMobilePark @FoxSports

We’re back for more @Mariners fans! Bring the energy to @TMobilePark tonight! You can track follow along at mariners.pnsn.org to watch the live seismogram from station RIZZS recording from the 3rd base tunnel. #seizethemoment #ALCS @mlb @foxsports

Recent @Mariners games have been shaking things up enough for our seismometers to notice but those waves are all in good fun. It's a great reminder that real quakes can happen anytime. Join us tomorrow (10/16) for @ShakeOut and practice what to do when the ground really moves.

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

RIVAS RUMBLE! Single to Left brings in Polanco to tie up at 2-2! # SeizeTheMoment @Mariners @TMobilePark @FoxSports

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

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

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.

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

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...

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!

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.

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.

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

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.

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!