Oregon Avalanche Map Layers

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"What's the danger?" Here are autogenerated DEM Shading rules for each advisory zone that allow for quickly adding avalanche danger, problems, and sun angle layers to CalTopo maps. Reports sourced from avalanche.org.

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

Danger report updates are fetched at 7:33pm and 7:33am. The selected elevation bands are not meant to be exact, but represent a characteristic of the terrain which varies locally.

The highest band typically includes alpine areas beginning as the treeline transitions into open slopes extending to ridges and peaks.

The middle band is typically a narrow transition zone between dense forests and treeless alpine areas.

The lowest band typically extends from valley floors or snowline to near treeline.

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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: Central Cascades Newberry Mt Hood Southern Oregon Blues Elkhorns Northern Wallowas Southern Wallowas

Avalanche Report

Pre-populated CalTopo Map

2024-12-21 Avalanche Danger

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• Moderate danger (above 5001')
• Moderate danger (4001' to 5000')
• Low danger (below 4000')

2024-12-21 Wind Slab

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• NW to SE aspects (above 5001')
• NW to SE aspects (4001' to 5000')

2024-12-21 Deep Persistent Slab

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• All aspects (above 5001')

Issued at: Friday, December 20, 2024 8:40PM
Issued by: COAA

Avalanche Report

Pre-populated CalTopo Map

2024-12-21 Avalanche Danger

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• Moderate danger (above 5001')
• Moderate danger (4001' to 5000')
• Low danger (below 4000')

2024-12-21 Wind Slab

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• NW to SE aspects (above 5001')
• NW to SE aspects (4001' to 5000')

Issued at: Friday, December 20, 2024 9:03PM
Issued by: COAA

Avalanche Report

Pre-populated CalTopo Map

2024-12-21 Avalanche Danger

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• Moderate danger (above 5001')
• Moderate danger (4001' to 5000')
• Low danger (below 4000')

2024-12-21 Wind Slab

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• All aspects (above 5001')
• All aspects (4001' to 5000')

2024-12-21 Wet Loose

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• All aspects (4001' to 5000')
• All aspects (below 4000')

Issued at: Friday, December 20, 2024 6:11PM
Issued by: NWAC

Avalanche Report

Report not available. See SOAIX for more information.

Avalanche Report

Pre-populated CalTopo Map

2024-12-21 Avalanche Danger

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• Low danger (above 5001')
• Low danger (4001' to 5000')
• Low danger (below 4000')

Issued at: Friday, December 20, 2024 7:00AM
Issued by: WAC

Avalanche Report

Pre-populated CalTopo Map

2024-12-21 Avalanche Danger

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• Moderate danger (above 5001')
• Moderate danger (4001' to 5000')
• Low danger (below 4000')

2024-12-21 Wind Slab

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• All aspects (above 5001')
• All aspects (4001' to 5000')

Issued at: Friday, December 20, 2024 7:04AM
Issued by: WAC

Avalanche Report

Pre-populated CalTopo Map

2024-12-21 Avalanche Danger

Copy to clipboard

• Moderate danger (above 5001')
• Moderate danger (4001' to 5000')
• Low danger (below 4000')

2024-12-21 Wind Slab

Copy to clipboard

• All aspects (above 5001')
• All aspects (4001' to 5000')

Issued at: Friday, December 20, 2024 7:00AM
Issued by: WAC

Avalanche Report

Pre-populated CalTopo Map

2024-12-21 Avalanche Danger

Copy to clipboard

• Moderate danger (above 5001')
• Moderate danger (4001' to 5000')
• Low danger (below 4000')

2024-12-21 Wind Slab

Copy to clipboard

• All aspects (above 5001')

2024-12-21 Wet Loose

Copy to clipboard

• SE to W aspects (below 4000')

Issued at: Friday, December 20, 2024 7:00AM
Issued by: WAC

Zone

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