Washington’s intense bout with record-breaking temperatures likely triggered a glacial mudslide on Mount Rainer. Monitors registered the lahar Tuesday afternoon, saying it lasted for hours ...

Here's what western Washington residents should know about lahars Lahars, mudflows linked to volcanoes, can destroy buildings, cars, roads and bridges in one devastating sweep. Author: KING 5 Staff ...

During the Mount St. Helens eruptions, lahars flowed up to 60 miles destroying 200 homes. Lahars are one of the risks with a Mount Rainier eruption, so many foothill communities prepare.

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 ...

The expansion is part of “a broader effort to implement a Lahar Detection System for Mount Rainier,” according to a National Park Service news release.