Pacific Northwest Earthquake Information - from the PNSN Information on Pacific Northwest earthquake activity and hazards from the Pacific Northwest Seismograph Network (PNSN), which operates seismograph stations and locates earthquakes in Washington. The PNSN is operated jointly by the University of Washington and several other northwest institutions, and is funded by the US Geological Survey ...

The Pacific Northwest Seismograph Network PNW EARTHQUAKE INFORMATION RECENT EVENTS CATALOG The following catalog is for earthquakes (M ...