Seismic Activity in Washington
Washington State faces significant earthquake risk from the Cascadia Subduction Zone, capable of producing magnitude 9+ earthquakes. The Seattle area also has local fault systems that pose additional risk.
Washington has a High seismic risk level based on historical earthquake data and proximity to active fault lines.
Over the past 30 days, there have been 3 recorded earthquakes in this region. The largest recent earthquake was a magnitude 2.8 event near 4 km W of Wauna, Washington.
