Helens eruption, the US Geological Survey set up an lahar detection system at Mount Rainier in 1998, which since 2017 has been upgraded and expanded. About 20 sites on the volcano’s slopes and ...

There are more glamorous volcanoes to climb (Mount Rainier) or to ski (Mount Hood) or that have exploded in epically dramatic fashion in living memory (Mount St. Helens). Seismically, Mount Adams ...

there have been 10 quakes at Mount Adams — the state’s second-tallest volcano after Mount Rainier — so far this year. In September alone, there were six earthquakes at the volcano ...

"Our volcanoes chatter all the time," he said, adding that the nearby Mount St. Helens and Mount Rainier often experience 10 to 20 earthquakes per month. "Some volcanoes, like St. Helens, Rainier, and ...

It shows the underground plumbing system that provides molten and partly molten rock to the magma chamber beneath the Mount Rainier volcano in Washington state. The scale at left is miles depth.

"Our volcanoes chatter all the time," he said, adding that the nearby Mount St. Helens and Mount Rainier often experience 10 to 20 earthquakes per month. "Some volcanoes, like St. Helens ...