Recent Earthquakes

Recent natural and manmade seismic activity.  Click figure for details.

 Quakes Near Volcanoes

Seismicity in Last 30 Days

Volcano Earthquakes
St. Helens
30 Days Ago Now

Volcanoes without recent seismicity

Adams, Baker, Jefferson, Crater Lake, Glacier Peak, Three Sisters

California Receives Federal Funding for Earthquake Early Warning System

Posted by A. Ling, 12/15/2014

The Los Angeles Times has a report on the appropriation of $5 million federal funding for earthquake early warning system (EEW) along the West Coast. California should begin to roll out EEW next year. Tom Banse of NW News Network interviews USGS geophysicist Doug Given and PNSN director John Vidale about the future EEW funding and development. 

Could More Instruments Warn of Northwest Mega-quake?

Posted by A. Ling, 12/04/2014

Glenn Farley of KING 5 is following up on Tom Banse's article about Obana et al. in BSSA. PNSN Director John Vidale talked about monitoring mega-earthquake in the Pacific Northwest on King 5 News.

Eerie Quiet at NW Fault Where 'Big One' May Shake

Posted by A. Ling, 12/02/2014

It has been three centuries since the last Cascadia Subduction Zone earthquake, which happened in January 1700. People wonder if the 'Big One' is coming soon. KOMO News has a report on an article in the Bulletin of the Seismological Society of America with results of ocean-bottom seismometer monitoring of the Cascadia Subduction Zone. The lack of interplate seimicity indicates that the dangerous Cascadia fault zone is completely locked. The release of this storing energy in the lock zone may lead to a big earthquake in the PNW. 

Location of Washington 1872 Earthquake Deduced

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.

Latest Seismo Blog Posts

Canadian ETS morphing to Washington one?

November 18, 2014

by Steve Malone

Over two weeks of tremor in central Vancouver Island has been progressing southward. Though we don't know about the geodetic component we suspect that this represents a slip event that is propagating southward. Since a southern Vancouver Island-Northern Puget Sound ETS is due about now the question is will this current activity continue all the way to southern Puget Sound. For some details.....

Great ShakeOut, Great success!

October 16, 2014

by Angel Ling

Congratulations and thank you for your participation in the Great ShakeOut Earthquake Drill! Hopefully it gave you a great opportunity to practice "Drop, Cover and Hold on", and review and update emergency preparedness plans and kits/supplies. Thanks again to make the Pacific Northwest safer. Read more to see what the Great Washington ShakeOut looks like at the PNSN!

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.