MT. RAINIER, Wash. — A swarm of small earthquakes was detected at Mount Rainier Tuesday morning, according to the U.S. Geological Survey Cascades Volcano Observatory (CVO) and the Pacific Northwest ...

A new report from the Department of Natural Resources estimates that a volcanic mudflow, known as a ‘"lahar," from Mount Rainier could produce property losses of up to $6 billion to communities ...

If Mount Rainier were to erupt, hazard maps show that lahar could travel through river valleys to as far as Puyallup, Tacoma and Randle. Credit: USGS This map shows which areas could be at risk ...

Mount Rainier’s newly-approved lahar detection upgrades will have a quirk: A couple of stations planted right in the likely paths of mudslides. In other words, researchers will be putting their ...

“Lahars can flow many miles downstream from the volcano, making this the most threatening hazard in the Cascades.” More on Mount Rainier : Missing climber’s body found in crevasse; he was ...

Mount Saint Helens, Mount Adams, Mount Baker, and Glacier Peak are four of the active volcanoes in Washington state. The fifth, located less than 70 miles from Seattle, is Mount Rainier.

In the wake of the Mount St. 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.

“Lahars, or volcanic mudflows, are the primary volcanic hazard with the potential to impact people living, working, or recreating within or near the Mount Rainier National Park,” according to ...

Mount Rainier is considered one of the most dangerous volcanoes in the world due to its potential for lahars. A lahar is ice and snow from the mountain’s peak melting during an eruption and ...

Mount Rainier saw a swarm of hundreds of small earthquakes that started early Tuesday morning.The activity began just before 1:30 a.