A debris flow deposited several feet of sediment in parts of Mount Rainier National Park on Monday. There was some damage to Westside Road and Tahoma Creek trail.

The U.S. Geological Survey said it and other agencies were monitoring the situation and would issue additional alerts "as ...

Mt. Rainier National Park rangers closed the highway to Paradise, the park’s main visitor center, for several hours after a small flow of mud and debris dislodged some trees and rocks.

A fresh flow of mud and rocks poured down a Mount Rainier stream Thursday as melting glacier water stripped debris from the peak's flank. Sodden debris began to break loose Tuesday evening ...

Mount Rainier National Park, located southeast of Tacoma, is named after and is home to the beloved active stratovolcano Mount Rainier.

ORTING, Wash. - New technology is coming to Pierce County to warn people of a possible Mt. Rainier eruption or giant mudflows, known as lahars.There's been no recent seismic activity from Mt ...

A swarm of earthquakes under the largest volcano in the Cascade Mountain Range has some people wondering if it's rumbling ...

LONGMIRE — Melting glacier water continued to strip debris from a flank of Mount Rainier on Wednesday, sending car-sized boulders downstream and prompting rangers to close a popular trail. A series of ...

Water has gushed from a glacier on Washington’s Mount Rainier, damaging a road and trail as it flowed down.

Scientists fear Washington’s Mount Rainier could trigger a swift debris flow caused by melting snow and ice. An event could endanger nearby populated areas.