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### Latest Earthquakes

### Latest Earthquakes

View the latest earthquake events and information from the past 24 hours, 7 days, or 1 month.

Earthquake Hazards Program

Search the Earthquake Catalog

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publication        January 1, 2000        Liquefaction evidence for the strength of ground motions resulting from Late Holocene Cascadia subduction earthquakes, with emphasis on the event of 1700 A.D.

publication        October 2, 2017        Influence of the megathrust earthquake cycle on upper-plate deformation in the Cascadia forearc of Washington State, USA

publication        June 19, 2015        Chance findings about early holocene tidal marshes of Grays Harbor, Washington, in relation to rapidly rising seas and great subduction earthquakes

publication        August 26, 2020        Developing post-alert messaging for ShakeAlert, the earthquake early warning system for the West Coast of the United States of America

Activity        February 2, 2022        Pacific Northwest Workshop - 2006

Activity        February 2, 2022        Pacific Northwest Workshop - 2012

publication        December 31, 2013        Re‐estimated effects of deep episodic slip on the occurrence and probability of great earthquakes in Cascadia

publication        January 1, 2008        Broadband characteristics of earthquakes recorded during a dome-building eruption at Mount St. Helens, Washington, between October 2004 and May 2005

publication        January 1, 1996        Earthquake-induced burial of archaeological sites along the southern Washington coast about A.D. 1700

publication        July 12, 2023        Slip deficit rates on southern Cascadia faults resolved with viscoelastic earthquake cycle modeling of geodetic deformation

publication        January 1, 1978        Earthquake history of Washington

publication        May 12, 2014        Technical implementation plan for the ShakeAlert production system: an Earthquake Early Warning system for the West Coast of the United States

publication        January 1, 2008        3D crustal structure and long-period ground motions from a M9.0 megathrust earthquake in the Pacific Northwest region

publication        November 1, 1993        Klamath Falls earthquakes, September 20, 1993 — Including the strongest quake ever measured in Oregon

State News Release        July 27, 2015        Media Advisory: Cascadia Quake and Orphan Tsunami — Public Lecture

publication        January 1, 2004        Depth to the Juan de Fuca slab beneath the Cascadia subduction margin– A 3-D model for sorting earthquakes

staff profileEvelyn Roeloffs

Program        June 26, 2019        Information by Region - Washington

publication        July 1, 2004        The Catfish Lake Scarp, Allyn, Washington: Preliminary field data and implications for earthquake hazards posed by the Tacoma fault

General        August 1, 2023        22-39. Exploring the final frontier of seafloor deformation

publication        November 1, 2008        Earthquakes generated from bedding plane-parallel reverse faults above an active wedge thrust, Seattle fault zone

publication        January 1, 2002        Simulation of broadband ground motion including nonlinear soil effects for a magnitude 6.5 earthquake on the Seattle fault, Seattle, Washington

Data Release        January 26, 2021        Multichannel minisparker, multichannel boomer, and chirp seismic-reflection data of USGS field activity 2017-612-FA collected in Puget Sound and Lake Washington in February of 2017

publication        January 1, 1999        Surface seismic measurements of near-surface P-and S-wave seismic velocities at earthquake recording stations, Seattle, Washington

Research        May 1, 2015        Seismology in the City

publication        April 1, 2013        Source mechanisms of persistent shallow earthquakes during eruptive and non-eruptive periods between 1981 and 2011 at Mount St. Helens, Washington

publication        January 1, 1994        Earthquakes in Washington and Oregon, 1872-1993

publication        January 1, 1991        Earthquake hazards in the Pacific Northwest: An overview

Research        October 15, 2020        18-2. Earthquake ground motions and seismic hazard in the Pacific Northwest

publication        December 20, 2017        P- and S-wave velocity models incorporating the Cascadia subduction zone for 3D earthquake ground motion simulations, Version 1.6—Update for Open-File Report 2007–1348

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