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Pacific Northwest Seismic Network

USGS Earthquake News

  • SZ4D Virtual Town Hall: An Update and Discussion on the Developing Plans for an SZ4D Implementation
    We will hold a two hour virtual Town Hall, open to anyone who is interested. SZ4D planning is progressing rapidly, and our teams have been working hard to develop specific plans for the major research initiative we envision. We will provide an update…
    - 5 days ago 22 Feb 21, 1:45pm -
  • ShakeAlert Earthquake Early Warning Delivery for the Pacific Northwest
    As massive slabs of Earth squish into and grind past each other off the coast of the Pacific Northwest, many people may wonder when they will feel ensuing earthquakes.   Although the U.S. Geological Survey cannot predict where and when future…
    - 11 days ago 16 Feb 21, 5:30pm -
  • The Disaster that Helped the Nation Prepare for Future Earthquakes: Remembering San Fernando
    At 6 o’clock in the morning on February 9, 1971, the reservoir keeper of the Lower Van Norman Dam in Southern California tried to get out of bed.  He couldn’t. A magnitude-6.6 earthquake was shaking his home nestled at the bottom of the dam. A…
    - 23 days ago 4 Feb 21, 3:30pm -
  • Who’s Sharing? Inconsistent Eyewitness Accounts Can Affect How We Understand Earthquakes
    As early American pioneers forged a long, arduous path across the country during the Westward Expansion, an earthquake hit what is now the State of Oklahoma on October 22, 1822.   “The trembling and vibrating were so severe as to cause door and…
    - 29 days ago 29 Jan 21, 9:00pm -
  • Federal Agencies Partner to Strengthen ShakeAlert Earthquake Early Warning Capacity Along the West Coast
    This seismometer in the Shasta-Trinity National Forest in Northern California, along with more than 200 seismometers in various stages of implementation across California, Oregon and Washington, is the result of a close partnership between the U…
    - 44 days ago 14 Jan 21, 9:00pm -
  • Magnitude 6.4 Earthquake in Croatia
    A magnitude 6.4 earthquake struck near Petrinja, Croatia, about 30 miles southeast of the capital of Zagreb, on December 29, 2020 at about 6:20 am Eastern Time (12:20 pm local time). Seismic instruments indicate the earthquake originated at a depth…
    - 60 days ago 29 Dec 20, 8:30pm -
  • Follow Earthquake Tweets
    From Mindteaser Monday to Fault Friday, the Earthquake Twitter Team is off to a rollicking start. The team behind the account is dedicated to providing timely and accurate messages during working hours to help the public understand when, w…
    - 80 days ago 9 Dec 20, 5:15pm -
  • 2019 Ridgecrest, California Earthquake Sequence Geonarrative
    Shaded relief map views of the 2019 Ridgecrest sequence. Events are color coded by depth. Depth is referenced to a surface elevation of 0.7 km above sea level. Dot size does not scale with magnitude. Stars indicate Mw 6.4 and 7.1 epicenter locatio…
    - 85 days ago 4 Dec 20, 7:15pm -
  • Now Trending…Earthquakes
    According to a recently published study by U.S. Geological Survey scientists, the USGS real-time earthquake web pages also quake with activity following a seismic event. Look at these numbers: 3.6 billion total data requests, including 29 million pag…
    - 5 Nov 20, 7:30pm -
  • Magnitude 7 Earthquake Off the Coast of Greece and Turkey
    A magnitude 7 earthquake struck offshore of the city of Neon Karlovasion, Greece (north of Simos Island in the eastern Agean Sea) on October 30th, 2020 at 1:51 pm local time (11:51 UTC). Seismic instruments indicate the earthquake originated a…
    - 30 Oct 20, 3:00pm -