Severe Tropical Storm Opong (international name Bualoi) intensified, packing maximum sustained winds of 110 km. per hour (kph ...

The US Geological Survey (USGS) has just installed some of the first sensors of their kind on the east side of the mountain.

Mount Rainier was quiet Wednesday morning. The lahar siren at a Puyallup fire station was not. The lahar-warning system at the station at 311 W. Pioneer went off about 10 a.m. The Puyallup Police ...

Jan 29 (Reuters) - A volcanic mudslide from New Zealand's 2,800 metre Mount Ruapehu is likely to be triggered in the coming weeks as melting snow fills the summit's swollen crater lake, local media ...

Mount Rainier is central to Tacoma’s identity, so much so that it appears on the city’s logo. But as CNN recently reported, the striking mountain is also an active volcano — and no one knows when it ...

Pierce County re-tested its lahar warning siren Tuesday morning--and this time it worked. Last week, a test failed when a defective audio file caused only short blips to emit from the speakers meant ...

Experts say it is only a matter of time until Mount Rainier, one of the most dangerous volcanos in the US, unleashes itself upon the Pacific Northwest. This huge, active stratovolcano looms over ...