Geologists say Saturday's massive mudslide in Washington state was probably triggered when the Stillaguamish River undercut a slope already weakened by the relentless rainfall of recent weeks.

Mudslides can happen during any big rain event, as long as certain conditions are met. According to the National Weather Service, rainfall at the rate of .8 inches an hour could trigger another debris ...

SANTA BARBARA, Calif. – The number of missing after a California mudslide has fluctuated wildly, due to shifting definitions, the inherent uncertainty that follows a natural disaster, and just ...

Mudslides often sweep through mountainous regions like those in San Bernardino County after wildfires burn away vegetation that normally would shore up steep terrain and absorb storm runoff. SAN ...

A county official said Wednesday that people living in the path of Saturday's massive mudslide "knew the risk" and that sometimes catastrophes "just happen." Snohomish County Emergency Management ...

Washington state, with its many steep slopes, streams and rivers and some of the heaviest annual rainfall in the country, is a mudslide waiting to happen. Add in soil erosion from logging, as was ...

Mudslide on road to rest area at Hanging Lake on Tuesday, May 2, 2023. Courtesy/ USFS Access to the Hanging Lake Trail in Glenwood Canyon has remained closed all this week due to a large mudslide that ...

Search Query Show Search. News ...

This archived news story is available only for your personal, non-commercial use. Information in the story may be outdated or superseded by additional information. Reading or replaying the story ...