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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 ...

At 2 a.m. on July 8, 2025, instruments across Washington State picked up an unusual signal from Mount Rainier. Over the following weeks, the volcano generated 10,834 small earthquakes, the largest ...

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 ...

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 ...

Mount Rainier has rattled through thousands of tiny earthquakes this year, a reminder that America’s most lethal volcano is ...