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Snow Avalanche Slope (2D)

Interactive 2D snow avalanche simulator: tune slope angle, snowpack depth and weak-layer stability, watch shear stress vs. shear strength decide when the weak layer fails, and see the slab flow and entrain mass downslope.

Physics & Mechanics2DModerate60 FPS📱 Mobile-adapted❄️ Ice & Cold⇄ 3D version
2d-3d-snow-avalanche ↗ Open standalone

This 2D simulator visualizes a snow avalanche as a weak-layer failure problem: a cross-section of the snowpack sits on a slope whose angle you control, with a buried weak layer whose bonding strength you can weaken or reinforce. The live gauge tracks the shear-stress-to-shear-strength ratio in real time — driven by slope angle and snowpack depth on the stress side, and by weak-layer stability on the strength side — so a slope can release naturally once the ratio passes 1, or hold until a deliberate trigger tips it over. Once released, the slab accelerates downslope, entrains snow to grow heavier and faster, then slows and stops as the terrain flattens into the runout zone.

⚙ Under the hood

Tune slope angle, snowpack depth and weak-layer stability to see when shear stress overwhelms shear strength and triggers an avalanche that flows and grows downslope.

Avalanche DynamicsWeak LayerShear StressSlope Stability

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install

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