Articles · Earth and Geological
Everything about Landslide
7 articles across NWS
Downslope movement of rock, soil, and debris. Landslides occur in every U.S. state and cause billions in damage annually, often triggered by heavy rain or earthquakes.
Disaster History
Case studies and disaster history
Bingham Canyon Mine 2013: The World's Largest Landslide - Zero Deaths
On April 10, 2013, the world's largest non-volcanic landslide in modern history occurred at Bingham Canyon copper mine in Utah. 65 million cubic meters of rock. Two events, 90 minutes apart. 100 mph.
Gros Ventre 1925/1927: The Landslide That Created a Dam - and the Dam That Destroyed a Town
On June 23, 1925, a landslide dammed the Gros Ventre River in Wyoming. Engineers declared it 'safe, in fact permanent.' Residents who had wisely slept on high ground eventually went home. On May 18, 1
La Conchita 2005: The Same Slope, Ten Years Later, Ten People Dead
In March 1995, a landslide buried 9 homes in La Conchita, California. No one died. The county declared it a Geological Hazard Area. The geologists said it would happen again. In January 2005, it did -
Montecito 2018: The Community That Survived the Fire - Then the Mud
On January 9, 2018, five weeks after the Thomas Fire burned 282,000 acres above Montecito, California, a debris flow killed 23 people. The fire hadn't killed anyone. The burned slopes converted rainfa
The 2014 Oso Mudslide: America's Deadliest Landslide & the Warning Nobody Acted On
The 2014 Oso mudslide killed 43 people in 90 seconds. The slope had been flagged as Washington's highest landslide risk. Previous slides in 2006 prompted warnings that were never enforced. Here's what
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Preparedness
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