The USGS says more earthquakes than normal were detected in September -- six in a month. Typically, they locate one every two ...

TRI-CITIES, Wash. - Mount Adams, the largest active volcano in Washington State, recently experienced an unusual increase in ...

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 ...