ANSS - Advanced National Seismic System

Pacific Northwest Region

Region Partners

Pacific Northwest Seismograph Network Logo


Damaging earthquakes are well known in the Pacific Northwest, including several larger than magnitude 7. In 1965, a magnitude 6.5 earthquake shook the Seattle, Washington, area causing substantial damage and seven deaths. This event spurred the installation of the Pacific Northwest Seismograph Network (PNSN) in 1969 to monitor regional earthquake activity. Starting with five seismometers the PNSN has grown to include over 220 seismograph stations in Washington and Oregon. The PNSN is centered at the University of Washington's Dept. of Earth and Space Sciences and operated jointly by the University of Washington and the University of Oregon. It is funded by the U.S. Geological Survey, U.S. Department of Energy, and the University of Washington.

The PNSN mission is to provide data and information products to help scientists study Pacific Northwest earthquake and volcanic hazards and to assist the emergency managers, press and public to understand and mitigate those hazards.  The PNSN collects and analyzes data for basic and applied research and to provide rapid and accurate information on earthquakes and volcanic activity in Washington and Oregon to emergency managers and the public after felt events.

Pacific Northwest map Map Key

Contact Info

  • Seismology Lab
    University of Washington Dept. of Earth and Space Sciences
    Box 351310
    Seattle, WA 98195-1310

    Phone: (206) 543-7010
    FAX: (206) 685-5788

    Directions From I-5 Southbound:
    Take the NE 45th Street exit (#169).
    Turn left onto NE 45th Street.
    Continue east about one quarter mile to 15th Avenue NE and turn right.
    Head south on 15th Avenue three blocks to NE 41st Street.
    Turn left at Gate #1 into the Central Plaza Garage.
    Stop at the gatehouse inside the garage for directions and a parking permit ($7.00).
    The Seismology Lab is located in room 146 of the QRC (Quaternary Research Center) in building ATG (Atmospheric Science and Geophysics).