Snowpack stability refers to the strength and cohesion of layers within a snowpack, which is the accumulation of snow on the ground. It is crucial for understanding avalanche risk, as unstable snowpacks can lead to sudden and dangerous snow slides. Factors affecting stability include temperature changes, wind, and the weight of new snowfall, which can create weak layers within the snow. To assess snowpack stability, experts often conduct tests such as the compression test or shear test. These tests help determine how easily layers can slide over one another. Monitoring snowpack stability is essential for skiers, snowboarders, and mountaineers to ensure safety in snowy environments.