That’s an unusual amount of seismic activity at the 12,276-foot volcano in southwest Washington, marking the most earthquakes at the mountain in a month since monitoring began there in 1982. Even so, ...

New research led by the University of Arizona and published in the journal Science Advances shows a seismic event around 1,100 years ago likely involved faults rupturing together or back-to-back ...

The 3.7 magnitude quake hit just after 2 a.m. Friday between Richmond and Ladysmith, B.C., very close to the U.S.-Canada ...

Earthquakes typically occur only once every three years at Mount Adams, but the region was hit with six in just one month.

Mount Adams, the long-dormant volcano in Southwest Washington, recently experienced some unusual seismic activity.

Six earthquakes were recorded at Mount Adams in September — the highest number in a single month since records began in 1982.

There have been three earthquakes in the Puget Sound region in less than a week, two have hit Bremerton in two days.

Were you woken up early Thursday morning? An earthquake hit near the San Juan Islands around 4 a.m. The United States ...

The Pacific Northwest got some early shakes Thursday morning with a 4.0 magnitude earthquake in the waters between San Juan ...

No damage was reported after an earthquake shook parts of Vancouver Island and British Columbia's Lower Mainland on Thursday ...

For much of Tacoma, the liquefaction susceptibility is considered “very low,” according to a map available on DNR’s website.

There were reports of shaking in Victoria and Vancouver, as a magnitude 4.0 earthquake hit early Thursday morning ...