Mount Rainier looms over the Pacific Northwest, its snow-capped summit visible from Seattle on clear days. At 14,411 feet, ...

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 ...

The snowcapped peak of Mount Rainier, which towers 4.3 kilometers (2.7 miles) above sea level in Washington state, has not produced a significant volcanic eruption in the past 1,000 years. Yet, more ...

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 ...

OLYMPIA, Wash. (AP) -- A new report estimates that property losses from a massive mudflow at Mount Rainier could reach $6 billion in western Washington's Puyallup Valley. Major mudflows, known as ...