The second-tallest volcano in Washington had six recorded earthquakes, ranging from magnitude 0.9 to 2.0. Typically, earthquakes there happen once every 2-3 years.
MOUNT ADAMS, Wash. — Six earthquakes were recorded at Mount Adams in September, the most since monitoring began in 1982, according to the U.S. Geological Survey’s Cascades Volcano Observatory.
The agency and the Pacific Northwest Seismic Network recorded six earthquakes at its seismic station located about 7 miles southwest of the volcano’s summit, as well as other stations further from the volcano. Those earthquakes ranged from magnitude 0.9 to 2.0.
According to USGS, earthquakes at Mount Adams typically happen once every two
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