Recent natural and manmade seismic activity. Click figure for details.
Quakes Near Volcanoes
Seismicity in Last 30 Days
Volcanoes without recent seismicity
Posted by A. Ling, 11/23/2014
The Seattle Times: USGS scientists think they've discovered the fault responsible for an 1872 earthquake that was one of Washington’s largest.
Posted by S. Malone, 11/08/2014
The Celebrity Examiner and Oregon Public Broadcasting have brief stories on the ongoing swarm just south of the Oregon-Nevada border. Even though this swarm is officially in Nevada's reporting region earthquakes in it are reported on the PNSN earthquake map and show up on many PNSN seismic stations in the area.
Here are the news releases on Nevada swarm from Oregon Department of Geology and Mineral Industries and Nevada Seismological Laboratory at University of Nevada, Reno.
Posted by A. Ling, 10/31/2014
"Without Warning!" tells the story of Cascadia High School student, Angie as she must go rescue her little sister after a large Cascadia Subduction Zone earthquake. The stroy also provide some tips to help you prepare for earthquakes and tsunmais. This publication is a partnership between Dark Horse Comics and the Oregon Office of Emergency Management (OEM) with support from Cascadia Region Earthquake Workgroup (CREW) and Federal Emergency Management Agency (FEMA).
Posted by A. Ling, 09/29/2014
Mount Ontake in Japan erupted without warning on Saturday. UW geologist George Bergantz explains the sudden eruption of Japan's Mount Ontake on King 5 news. This type of eruption, known as phreatic eruption, is uncommon, but it could happen in Washington.
Latest Seismo Blog Posts
November 18, 2014
by Steve Malone
October 16, 2014
by Angel Ling
The PNSN reduces risk within the states of Washington and Oregon by
- monitoring ground motions within the region in order to better understand earthquake and volcano hazards and their impacts on the physical, economic, political, and social environment,
- providing the most accurate information about earthquakes and volcanoes as rapidly as possible to public officials, the public, and for education, and
- advocating comprehensive and cost-effective measures for reducing the harmful effects of earthquakes and volcanoes.