In the shadow of Washington State's Mount Rainier, about 90,000 people live in the path of a potential large lahar—a destructive, fluid and fast-moving debris flow associated with volcanic slopes. At ...

Mount Rainier is America's most dangerous volcano. Scientists warn lahars could devastate 150,000 people with little warning.

Washington’s intense bout with record-breaking temperatures likely triggered a glacial mudslide on Mount Rainer. Monitors registered the lahar Tuesday afternoon, saying it lasted for hours. Lahars, ...

A study published in Scientific Reports shows that catastrophic volcanic mudflows, known as lahars, can be effectively monitored with infrasound remote sensing technology. Infrasound airwaves are ...

In June 2024, early career geologist Gustavo Béjar López traveled to Guatemala for a project aimed at using artificial intelligence to automatically detect and potentially forecast deadly mudslides ...

SEATTLE — Editor's note: The above video on the USGS adding more lahar detection sites at Mount Rainier National Park originally aired June 8, 2021. SEATTLE - Western Washington is virtually ...

Perched on the volatile slopes of Volcán de Fuego in western Guatemala, geologist Gustavo Béjar López listened to the heartbeat of one of the world's most restless mountains, as he dug holes to place ...