Studying tree rings helped scientists pinpoint when Mount Rainier last sent a lahar down its steep slopes, which could help planners anticipate future mudflows.

Millions of tonnes of ash and rock from an erupting Philippine volcano could bury nearby communities due to heavy rain, authorities said Saturday, as tens of thousands flee over fears of a deadly ...

Something stirred beneath Mount Rainier this summer, sending over 1,000 earthquakes through the ground in weeks—the largest swarm ever recorded at this towering volcano. Seismometers glowed with ...

Scientists are on high alert after a series of earthquakes struck Mount Adams, the largest active volcano in Washington state. The volcano, known for its potential to trigger landslides and mudflows, ...

TEMPO.CO, Jakarta - Indonesia’s Meteorology, Climatology, and Geophysics Agency (BMKG) has issued a warning of possible volcanic mudflows and flash floods on the slopes of Mount Semeru, one of the ...