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Avalanche slope reference
Use the Avalanche slope reference to calculate practical planning results from your outdoor activity inputs.
Avalanche slope reference
Use the Avalanche slope reference to calculate practical planning results from your outdoor activity inputs.
Avalanche slope reference
Safety-related reference only. Follow official rules, local closures, professional training, and gear manuals first; stop the activity when risk signs appear.
Reference table
| < 25° | Generally lower angle terrain |
|---|---|
| 25-30° | Rare releases remain possible; avoid connected overhead terrain |
| 30-50° | Most slab avalanches initiate in this range |
| > 50° | Frequent loose snow movement; still hazardous terrain |
Source: Avalanche.org — Slope Angle ·
How to use it
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Field judgment comes first
Weather, fitness, gear condition, and local rules matter more than a number. For high-risk activities, follow trained procedures and official information.
Frequently asked questions
Is the result exact?
It is a reference calculation based on common formulas and rules of thumb. Field conditions and gear can change the result.
Is data sent to the server?
No. Calculations and file handling run in the browser only.