MountAdams rises above Trout Lake on Nov. 24, 2023, in Klickitat County. MountAdams experienced the most earthquakes — six small magnitude — in one month during September since monitoring at ...
In September, six small earthquakes were detected at MountAdams, according to the U.S. Geological Survey Cascades Volcano Observatory (CVO) and Pacific Northwest Seismic Network (PNSN).
MountAdams, about 70 miles north of Portland, is one of the sleepiest active volcanoes in the Cascade Range. A small earthquake every few years is typical. But it’s shaken up expectations ...