A 4.2 magnitude earthquake shook northern Lake County on Sunday night, with tremors felt in parts of Mendocino County, ...

Non-volcanic tremor ramp up precedes slow slip in Cascadia by about a day, indicating that brittle-creeping process ...

The last big, “megathrust” earthquake in the region, along the 600-mile-long Cascadia Subduction Zone, was in 1700. Experts say the likelihood in the next 50 years of a “megathrust” on the ...

The 4.5 magnitude earthquake originated at 5:02 a.m. 10 kilometers east of Orcas and was felt as far north as Vancouver and as far south as Seattle, according to an estimated shake map from the U.S.

This earthquake comes just hours after a 2.8 magnitude struck in Bremerton early on Thursday morning. The initial shake map from the Pacific ... This is called the Cascadia Subduction Zone.

This is called the Cascadia Subduction Zone. According to the Washington State Department of Natural Resources (DNR), earthquakes happen in Washington every day, but most are too small to be felt.

A preliminary earthquake measuring 3.5 on the Richter ... The quake is a reminder of the seismic activity in the region, where the Cascadia Subduction Zone has been known to produce periodic ...

A 4.8 earthquake west of Squamish, B.C., was recorded around 1:26 p.m., according to the Pacific Northwest Seismic Network. The quake had a depth of 10 kilometers. Reporters in the Cascadia Daily News ...

Earthquakes trigger tsunamis by causing the ocean floor to rise or fall, pushing water above to form a massive wave. But it isn't just California at risk. Washington sits along the Cascadia ...