Canada Avalanche Danger Report Interactive Map

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"Where's the danger?" Here are autogenerated DEM Shading rules for each advisory zone that allow for quickly adding avalanche danger and problem layers to CalTopo maps.

Show Instructions

Digital Elevation Model (DEM) shading let's you create custom shading schemes based on elevation, slope, aspect and tree cover.

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Avalanche Report

The selected elevation bands are not meant to be exact, but represent a characteristic of the terrain which varies locally.

The highest band, ATL (Above Tree Line), typically includes alpine areas beginning as the treeline transitions into open slopes extending to ridges and peaks.

The middle band, NTL (Near Tree Line), is typically a narrow transition zone between dense forests and treeless alpine areas.

The lowest band, BTL (Below Tree Line), typically extends from valley floors or snowline to near treeline.

Adjusting bands

The default elevation bands may not be accurate for the current zone, you can adjust the bands by dragging the sliders.

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Usage

You'll find that Terrain Modeling in the left pane will show layers that can be turned on and edited. The right pane will show Custom Layers that can be toggled on or off.

Select A Zone: Canada zone Canada zone Canada zone Canada zone Canada zone Canada zone Canada zone Canada zone Canada zone Canada zone Canada zone

Avalanche Report

Pre-populated CalTopo Map

2026-04-28 Avalanche Danger

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• Spring Conditions (above 9001')
• Spring Conditions (7501' to 9000')
• Spring Conditions (below 7500')

Issued at: Thursday, April 30, 2026 4:00PM
Issued by: Avalanche Canada

Avalanche Report

Pre-populated CalTopo Map

2026-04-28 Avalanche Danger

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• Spring Conditions (above 9001')
• Spring Conditions (7501' to 9000')
• Spring Conditions (below 7500')

Issued at: Thursday, April 30, 2026 5:00PM
Issued by: Avalanche Canada

Avalanche Report

Pre-populated CalTopo Map

2026-04-28 Avalanche Danger

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• Spring Conditions (above 9001')
• Spring Conditions (7501' to 9000')
• Spring Conditions (below 7500')

Issued at: Friday, May 01, 2026 5:00PM
Issued by: Avalanche Canada

Avalanche Report

Pre-populated CalTopo Map

2026-04-28 Avalanche Danger

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• Spring Conditions (above 9001')
• Spring Conditions (7501' to 9000')
• Spring Conditions (below 7500')

Issued at: Wednesday, April 29, 2026 8:00AM
Issued by: Avalanche Canada

Avalanche Report

Pre-populated CalTopo Map

2026-04-28 Avalanche Danger

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• Spring Conditions (above 9001')
• Spring Conditions (7501' to 9000')
• Spring Conditions (below 7500')

Issued at: Monday, April 13, 2026 4:00PM
Issued by: Avalanche Canada

Avalanche Report

Pre-populated CalTopo Map

2026-04-28 Avalanche Danger

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• Spring Conditions (above 9001')
• Spring Conditions (7501' to 9000')
• Spring Conditions (below 7500')

Issued at: Tuesday, May 05, 2026 3:30PM
Issued by: Avalanche Canada

Avalanche Report

Pre-populated CalTopo Map

2026-04-28 Avalanche Danger

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• Spring Conditions (above 9001')
• Spring Conditions (7501' to 9000')
• Spring Conditions (below 7500')

2026-05-05 Wet Loose

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• All aspects (above 9001')
• All aspects (7501' to 9000')
• All aspects (below 7500')

Issued at: Monday, May 04, 2026 4:00PM
Issued by: Avalanche Canada

Avalanche Report

Pre-populated CalTopo Map

2026-04-28 Avalanche Danger

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• Spring Conditions (above 9001')
• Spring Conditions (7501' to 9000')
• Spring Conditions (below 7500')

Issued at: Monday, April 27, 2026 4:00PM
Issued by: Avalanche Canada

Avalanche Report

Pre-populated CalTopo Map

2026-04-28 Avalanche Danger

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• Spring Conditions (above 9001')
• Spring Conditions (7501' to 9000')
• Spring Conditions (below 7500')

Issued at: Monday, April 27, 2026 4:00PM
Issued by: Avalanche Canada

Avalanche Report

Pre-populated CalTopo Map

2026-04-28 Avalanche Danger

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• Spring Conditions (above 9001')
• Spring Conditions (7501' to 9000')
• No rating (below 7500')

Issued at: Monday, April 27, 2026 4:00PM
Issued by: Avalanche Canada

Avalanche Report

Pre-populated CalTopo Map

2026-04-28 Avalanche Danger

Copy to clipboard

• Spring Conditions (above 9001')
• Spring Conditions (7501' to 9000')
• Spring Conditions (below 7500')

Issued at: Monday, April 27, 2026 4:00PM
Issued by: Avalanche Canada

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