Uploaded February 2026 | Updated September 2026, 2 weeks ago
Following the recent avalanche in California, many are asking: what causes an avalanche? Meteorologist Lindsay Storrs explains how avalanches form, what makes snowpack unstable, and the weather conditions that increase avalanche danger in mountain regions like the Sierra Nevada.
Following the recent avalanche in California, many are asking: what causes an avalanche? Meteorologist Lindsay Storrs explains how avalanches form, what makes snowpack unstable, and the weather conditions that increase avalanche danger in mountain regions like the Sierra Nevada.
