Geologic Information Portal Update

We’ve updated our 1:24,000-scale surface geologic mapping on our Geologic Information Portal. This dataset is a compilation of 1:24,000-scale mapping of 7.5-minute quadrangles across the State. Suggested citation: Washington Geological Survey, 2019, Surface geology, 1:24,000–GIS data, November 2019: Washington Geological Survey Digital Data Series DS-10, version 3.1, previously released September 2017. Link

New Geologic Mapping Published!

We’re pleased to announce the release of two new geologic maps! Geologic map of the Adna 7.5-minute quadrangle, Lewis County, Washington Abstract: New 1:24,000-scale geologic mapping of the Adna quadrangle in southwest Washington focuses on improving geologic understanding of natural hazards that may pose a risk to people and infrastructure, including a proposed flood-retention structure […]

New Tsunami Simulation Videos Published

We have released new videos showing simulated tsunami wave amplitudes and current speeds for several locations along the Washington coast. Tsunamis are multi-wave events that affect coastal areas for many hours to potentially days after an earthquake happens. In order to show how tsunamis might affect a certain area over time we use computer models […]

Results of the 2017–2019 School Seismic Safety Project Published

We are pleased to publish the results of the 2017–2019 School Seismic Safety Project The School Seismic Safety Project (SSSP) is the first phase of a statewide effort to systematically evaluate Washington school buildings for seismic performance. Many of Washington’s K–12 students attend schools that may not withstand earthquake shaking. Washington State ranks second in the […]

May is Volcano Preparedness Month!

How can you prepare for a volcanic eruption? The active Cascade volcanoes that make our state so beautiful could erupt sometime in the future. How can you prepare for a volcanic eruption? How will you react if one of Washington’s volcanoes erupts? Volcano preparedness month is a time to inform yourself about volcanic hazards and […]

Tsunami Evacuation Walk Time Maps Published

We have published tsunami evacuation walk time maps for Port Angeles, Bellingham, Anacortes, and the towns of Aberdeen, Hoquiam, and Cosmopolis. The maps show the amount of time it would take to evacuate from within the modeled inundation zone of a Cascadia-sourced subduction zone earthquake. The maps show the extent of the tsunami inundation zone […]