What to know about avalanches, what causes them and how to stay safe

Associated Press (AP)EN 4 min read 100% complete by By THE ASSOCIATED PRESSFebruary 18, 2026 at 06:23 PM

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Avalanches, masses of snow moving down slopes, are most common in wilderness areas and pose a significant risk, causing an average of 25 deaths in the U.S. each winter. They occur when layers of snow on slopes of 30 degrees or more become unstable due to added weight or other triggers like movement or changing weather. Slabs, large layers of snow that break away, are the most dangerous type. Experts emphasize checking avalanche forecasts and carrying safety gear before engaging in backcountry activities like skiing or snowmobiling. While ski resorts often have mitigation systems, individuals should be aware that avalanches can reach speeds of up to 80 mph, making them impossible to outrun.

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Key Player Opposition Context

Usain Bolt 30% Chris Lundy 40% Colorado Avalanche Information Center 50% Sierra Avalanche Center ×260% United States 70% National Avalanche Center ×380%

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avalanches 100% avalanche safety 90% snow 70% snowpack 70% avalanche forecast 60% national avalanche center 60% slopes 60% slab avalanches 50% winter backcountry 50% avalanche mitigation 40%

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Negative

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Associated Press (AP)

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90%

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United States

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avalanches avalanche safety snow snowpack avalanche forecast national avalanche center slopes slab avalanches winter backcountry avalanche mitigation

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