Happy #FieldworkFriday! This winter season keeps providing, with some incredible hoar frost by site ODUC. It grows in low temp & high moisture areas, where sunlight & precipitation haven't yet reached. Sol Duc Valley had perfect conditions for growing these crystals as of late!

In 2024 the PNSN located 3,272 earthquake within Washington and Oregon. Another pretty typical year for seismicity in the PNW. Check out our most recent blog post which reviews our 2024 Earthquake Catalog.

ICYMI: Sunday, January 26th marked the 325th anniversary of the last great Cascadia Subduction Zone earthquake. Watch our video with PNSN Director, Harold Tobin & UW College of the Environment to learn about the history and lasting impacts of the event!

PRELIM Earthquake: M3.0, 7.6 km SW from Prineville, OR at 2025/01/29 12:30 PST Did You Feel It?:

PNSN Director, Harold Tobin, talks about last great earthquake along the Cascadia Subduction Zone on the 325th Anniversary, January 26th 2025. This video was made in collaboration with @UWEnvironment.

Today is the 325th anniversary of the last Cascadia Subduction Zone megaquake. Are you seeing Rumblings: Preparing for Cascadia at the Art House today? Please be prepared and know before you go! Find earthquake preparedness tips in the Seismo Blog:

RT @UOHazardsLab: You can now buy tickets for additional screenings of “Rumblings: Preparing for Cascadia” on the Art House website! Showti…

Just in the last few days, our field technicians replaced batteries at LONE, swapped a cell modem at BEER, and did maintenance at BASIN! (3/3)

PRELIM Earthquake: M3.0, 6.7 km ENE from Fall City, WA at 2025/01/20 17:03 PST Did You Feel It?:

PRELIM Earthquake: M3.6, 7.4 km ENE from Fall City, WA at 2025/01/20 13:35 PST Did You Feel It?:

@CaltechSeismo Through the crisis, the seismic network and the @USGS_ShakeAlert system have continued to operate without interruption. That’s a credit to the hard work and resilience you all are showing in southern California.

Happy #FieldworkFriday! New station METAL needed a visit to fix a power issue that presented itself once snowy winter conditions had set in. Sites that work well in spring/summer/fall weather can sometimes act up in the winter. Any day we visit a site on skis is a good day!

🎥Want to see the Rumblings: Preparing for Cascadia documentary at the Art House on 1/26? We added a second screening at 2:30pm to accommodate high demand! 🎟️Reserve your free tickets at Cosponsored by @UOHazardsLab, @UOAlert, @cascadiaEQs, and @UO_MNCH

Happy #FieldworkFriday! The PNSN Field Team definitely hit the ground running during the first full week of 2025! We visited sites all across the network; ANGUS, OSR, BILS, LWCK, METAL, MRN, DBO, GRSDL, NECAN, LONE, and OLBLU. What a great way to start the year!

RT @NFL: 14 years ago, @MoneyLynch gave us one of the greatest playoff moments of all-time... The Beast Quake

This event is co-sponsored by @UOHazardsLab, @cascadiaEQs, @UO_MNCH, and @UOAlert.