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 ...

An earthquake in Lake County Sunday evening was felt in parts of Sonoma and Mendocino counties. According to the United States Geological Survey (USGS), a 4.2 magnitude earthquake ...

An earthquake of magnitude 4.0 has shaken an area in the Mendocino National Forest. The quake, which hit at 7:13 p.m., was centered in 14 miles northeast of Pottery Valley, according to preliminary ...

An earthquake Sunday evening in Lake County was felt in parts of Mendocino and Sonoma counties. The magnitude 4.2 quake ...

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.