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Oso mudslide: What happened when the slope fell into the Stillaguamish River

Snohomish County mudslide


‘So many people yelling for help’

Survivors and rescuers tell their stories of that tragic day

Marcus Yam / The Seattle Times

MARCH 29, 2014: Rescue workers dig through a pile of debris to look for victims along Highway 530. A week earlier, on March 22, a massive mudslide ripped through the area, killing 43 people and destroying dozens of homes. This story, which recounts that tragic day, is based on Seattle Times interviews with survivors, rescuers and friends and family of the dead. It includes photos, video and emergency-dispatch audio.



Times Watchdog

‘Unforeseen’ risk of slide? Warnings go back decades

Marcus Yam / The Seattle Times

MARCH 24, 2014: While a Snohomish County official said the area hit by the mudslide "was considered very safe," the hillside's history of slides dates back more than 70 years. Above is a view of the mudslide along Highway 530, which sent a huge chunk of the hill into the Stillaguamish River.




The science of the slide

March 27, 2014

Laser maps reveal slide risk with startling clarity

People who lived near the hillside could see with their own eyes that it had slid before. But it takes a high-tech type of vision to fully grasp the danger.

Updates on search efforts were regularly posted in The Today File.

See all coverage from the slide and its aftermath →

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