PNSN

@PNSN1

Pacific Northwest Seismic Network (PNSN), monitoring earthquakes & volcanoes in WA and OR. Contact us: http://pnsn.org/contact-us.

Seattle, WA

Joined November 2011

142Following

24KFollowers

Pinned

PNSN@PNSN1 · May 23

Happy #FieldworkFriday! The Stehekin DREAM has come true! This site has been in the works for years and was finally installed last week at the northern tip of Lake Chelan. DREAM is online and helping to provide a more detailed picture of seismicity in the North Cascades.

PNSN1's tweet image. Happy #FieldworkFriday! The Stehekin DREAM has come true! This site has been in the works for years and was finally installed last week at the northern tip of Lake Chelan. DREAM is online and helping to provide a more detailed picture of seismicity in the North Cascades.

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PNSN@PNSN1 · 8 h

Happy FieldworkFriday! We a GoPro to the skids of a helicopter for a recon flyover of St. Andrews Rock (STAR). The station is hard to spot on the ridge line that the helicopter circles. Flying above Mt Rainier really puts into perspective just how big this volcano actually is!

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PNSN Retweeted

Oregon Hazards Lab@UOHazardsLab · Jul 22

Did you hear today's story about OHAZ on @KLCCOregon? KLCC joined the HBO seismic site upgrade last week! Learn from @uoregon undergrads why they like working at OHAZ and how @pnsn1 seismic monitoring stations and @USGS_ShakeAlert improve resilience. klcc.org/disasters-acci…

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PNSN@PNSN1 · Jul 19

NEW Earthquake: M3.5, 32.6 km W from Penticton, BC, 4km deep at 2025/07/19 04:38 PDT V3 pnsn.org/event/62146337 Did You Feel It?: zpr.io/55Y8HsNm4ZJW

PNSN1's tweet image. NEW Earthquake: M3.5, 32.6 km W from Penticton, BC, 4km deep at 2025/07/19 04:38 PDT V3
pnsn.org/event/62146337
Did You Feel It?: zpr.io/55Y8HsNm4ZJW

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PNSN@PNSN1 · Jul 18

Happy #FieldworkFriday! Oh deer! The team ran into a handful of deer while installing new site ODEER on the Olympic Peninsula. It is extremely important to respect our wildlife and keep interactions to a minimum, but that doesn’t stop curious critters from checking us out!

PNSN1's tweet image. Happy #FieldworkFriday! Oh deer! The team ran into a handful of deer while installing new site ODEER on the Olympic Peninsula. It is extremely important to respect our wildlife and keep interactions to a minimum, but that doesn’t stop curious critters from checking us out!

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PNSN@PNSN1 · Jul 14

Position opening at the Pacific Northwest Seismic Network. For more information and to apply please visit bit.ly/4lHmP8M

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PNSN@PNSN1 · Jul 11

Happy #FieldWorkFriday! Two new seismic stations are now online: CRESC and CHUTE. @uocas students Karlee and Charlie installed the seismometers! The PNSN fosters undergrads' professional development by hiring summer field technicians at both our @uoregon and @uofwa offices.

PNSN1's tweet image. Happy #FieldWorkFriday! Two new seismic stations are now online: CRESC and CHUTE. @uocas students Karlee and Charlie installed the seismometers! The PNSN fosters undergrads' professional development by hiring summer field technicians at both our @uoregon and @uofwa offices.

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PNSN@PNSN1 · Jul 9

Director Harold Tobin with @SeattleTimes about the ongoing EQ swarm at Mt Rainier: seattletimes.com/seattle-news/e… It’s the biggest swarm since 2009, we’re closely monitoring the EQ activity, but we don’t see anything to elevate the level of concern about volcanic activity at this time.

PNSN1's tweet card. Hundreds of earthquakes are detected at or near Mount Rainier each year, with "swarms" typically occurring once or twice annually. No need to panic.

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PNSN@PNSN1 · Jul 8

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 and color code for Mount Rainier remain at GREEN/NORMAL. volcanoes.usgs.gov/hans-public/no…

PNSN1's tweet image. On 7/8/25, the USGS &amp; 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 and color code for Mount Rainier remain at GREEN/NORMAL.
volcanoes.usgs.gov/hans-public/no…

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PNSN@PNSN1 · Jul 4

Happy #FieldworkFriday! We're showing off our red white and blue this week: Red Mountain (REDMT), White Pass (WPEQ), and Old Blue Mountain (OLBLUE). Have a safe and happy 4th of July weekend! 🇺🇸 🎆

PNSN1's tweet image. Happy #FieldworkFriday! We're showing off our red white and blue this week: Red Mountain (REDMT), White Pass (WPEQ), and Old Blue Mountain (OLBLUE).

Have a safe and happy 4th of July weekend! 🇺🇸 🎆

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PNSN@PNSN1 · Jul 1

NEW Earthquake: M3, 37.1 km SSE from Adel, OR, -1km deep at 2025/07/01 10:34 PDT V2 pnsn.org/event/62129897 Did You Feel It?: zpr.io/HdBd4Fhqzkn6

PNSN1's tweet image. NEW Earthquake: M3, 37.1 km SSE from Adel, OR, -1km deep at 2025/07/01 10:34 PDT V2
pnsn.org/event/62129897
Did You Feel It?: zpr.io/HdBd4Fhqzkn6

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PNSN@PNSN1 · Jun 27

Happy #FieldworkFriday! Last week, we highlighted the installation of our newest volcano broadband monitoring station LAVA near the beautiful Mount Hood. Here is some more footage of the work done by our awesome field staff to bring this site to life!

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PNSN@PNSN1 · Jun 24

Anyone in OR, WA, or CA can get earthquake early warning alerts on their phones! @USGS_ShakeAlert detects earthquakes and can alert people before shaking arrives. Almost 600 PNSN seismic stations send real-time ground motion data to #ShakeAlert #EEW. 🔗sgs.gov/FAQ/BeShakeAle…

PNSN1's tweet image. Anyone in OR, WA, or CA can get earthquake early warning alerts on their phones! @USGS_ShakeAlert detects earthquakes and can alert people before shaking arrives. Almost 600 PNSN seismic stations send real-time ground motion data to #ShakeAlert #EEW. 🔗sgs.gov/FAQ/BeShakeAle…

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PNSN@PNSN1 · Jun 13

Happy #FieldWorkFriday! An unexpected (but very cute) guest joined our field staff last week on the way to site TWL1. While this tiny bear cub showed up by itself, we bet Momma Bear was somewhere close by! Springtime always brings lots of cute new faces to our local wilderness.

PNSN1's tweet image. Happy #FieldWorkFriday! An unexpected (but very cute) guest joined our field staff last week on the way to site TWL1. While this tiny bear cub showed up by itself, we bet Momma Bear was somewhere close by! Springtime always brings lots of cute new faces to our local wilderness.

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PNSN@PNSN1 · Jun 6

Happy #FieldworkFriday! As part of our preventative maintenance, sites that experience high temp fluctuations, like station HTW, have a gravel-backed wall built along the southern side. This sun blocking barrier helps keep the equipment cool and extends the life of our equipment.

PNSN1's tweet image. Happy #FieldworkFriday! As part of our preventative maintenance, sites that experience high temp fluctuations, like station HTW, have a gravel-backed wall built along the southern side. This sun blocking barrier helps keep the equipment cool and extends the life of our equipment.

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PNSN@PNSN1 · Jun 3

PRELIM Earthquake: M3.1, 4.5 km W from Mount Vernon, WA at 2025/06/03 01:59 PDT pnsn.org/event/62121826 Did You Feel It?: zpr.io/DRgCfPsq8EuP

PNSN1's tweet image. PRELIM Earthquake: M3.1, 4.5 km W from Mount Vernon, WA at 2025/06/03 01:59 PDT
pnsn.org/event/62121826
Did You Feel It?: zpr.io/DRgCfPsq8EuP

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PNSN@PNSN1 · May 30

Happy #FieldworkFriday! Field technicians installed a wind turbine at site GORGE this week. It should help the station generate power in addition to the solar panels, in case of inclement weather. This site has lots of wind - great for testing our turbine!

PNSN1's tweet image. Happy #FieldworkFriday! Field technicians installed a wind turbine at site GORGE this week. It should help the station generate power in addition to the solar panels, in case of inclement weather. This site has lots of wind - great for testing our turbine!

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