Oregon Avalanche Map

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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 Blues Elkhorns Northern Wallowas Southern Wallowas

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Central Cascades

Pre-populated CalTopo Map

Newberry

Pre-populated CalTopo Map

Mt Hood

Pre-populated CalTopo Map

Blues

Pre-populated CalTopo Map

Elkhorns

Pre-populated CalTopo Map

Northern Wallowas

Pre-populated CalTopo Map

Southern Wallowas

Pre-populated CalTopo Map

Avalanche Report

2023-03-21 Avalanche Danger

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

a0-0e5001-20310f f7941e
a0-0e4001-5000f f7941e
a0-0e0-4000f 50b848

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2023-03-20 Wind Slab

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

a293-158e5001-20310f A200FF
a293-158e4001-5000f A200FF

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2023-03-20 Cornice Fall

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

a339-158e5001-20310f 0000FF
a339-158e4001-5000f 0000FF

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Issued at: Sunday, March 19, 2023 9:09PM
Issued by: COAA

Report not available. See COAA for more information.

Issued at: Wednesday, November 30, 2022 9:12AM
Issued by: COAA

2023-03-21 Avalanche Danger

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

a0-0e5001-20310f fff200
a0-0e4001-5000f fff200
a0-0e0-4000f 50b848

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2023-03-20 Wind Slab

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

a158-158e5001-20310f A200FF
a158-158e4001-5000f A200FF

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Issued at: Sunday, March 19, 2023 6:30PM
Issued by: NWAC

Report not available. See WAC for more information.

Issued at: Monday, March 20, 2023 7:00AM
Issued by: WAC

Report not available. See WAC for more information.

Issued at: Monday, March 20, 2023 7:00AM
Issued by: WAC

Report not available. See WAC for more information.

Issued at: Monday, March 20, 2023 7:00AM
Issued by: WAC

Report not available. See WAC for more information.

Issued at: Monday, March 20, 2023 7:00AM
Issued by: WAC

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-03-20 07:20AM Shade	91 by 1 Copy to clipboard
2023-03-20 08:50AM Shade	107 by 17 Copy to clipboard
2023-03-20 10:20AM Shade	126 by 31 Copy to clipboard
2023-03-20 11:50AM Shade	151 by 42 Copy to clipboard
2023-03-20 01:20PM Shade	182 by 46 Copy to clipboard
2023-03-20 02:50PM Shade	212 by 41 Copy to clipboard
2023-03-20 04:20PM Shade	236 by 30 Copy to clipboard
2023-03-20 05:50PM Shade	255 by 15 Copy to clipboard

Time of day	Lighting (Az/Z)
2022-12-01 07:30AM Shade	122 by 1 Copy to clipboard
2022-12-01 09:00AM Shade	139 by 13 Copy to clipboard
2022-12-01 10:30AM Shade	159 by 22 Copy to clipboard
2022-12-01 12:00PM Shade	182 by 24 Copy to clipboard
2022-12-01 01:30PM Shade	204 by 21 Copy to clipboard
2022-12-01 03:00PM Shade	223 by 12 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-20 07:20AM Shade	91 by 1 Copy to clipboard
2023-03-20 08:50AM Shade	108 by 17 Copy to clipboard
2023-03-20 10:20AM Shade	127 by 31 Copy to clipboard
2023-03-20 11:50AM Shade	152 by 41 Copy to clipboard
2023-03-20 01:20PM Shade	182 by 45 Copy to clipboard
2023-03-20 02:50PM Shade	212 by 40 Copy to clipboard
2023-03-20 04:20PM Shade	236 by 29 Copy to clipboard
2023-03-20 05:50PM Shade	255 by 15 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-21 07:10AM Shade	92 by 2 Copy to clipboard
2023-03-21 08:40AM Shade	108 by 17 Copy to clipboard
2023-03-21 10:10AM Shade	128 by 31 Copy to clipboard
2023-03-21 11:40AM Shade	153 by 41 Copy to clipboard
2023-03-21 01:10PM Shade	184 by 45 Copy to clipboard
2023-03-21 02:40PM Shade	213 by 40 Copy to clipboard
2023-03-21 04:10PM Shade	237 by 28 Copy to clipboard
2023-03-21 05:40PM Shade	256 by 14 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-21 07:10AM Shade	92 by 2 Copy to clipboard
2023-03-21 08:40AM Shade	108 by 18 Copy to clipboard
2023-03-21 10:10AM Shade	127 by 32 Copy to clipboard
2023-03-21 11:40AM Shade	153 by 42 Copy to clipboard
2023-03-21 01:10PM Shade	184 by 45 Copy to clipboard
2023-03-21 02:40PM Shade	214 by 40 Copy to clipboard
2023-03-21 04:10PM Shade	237 by 29 Copy to clipboard
2023-03-21 05:40PM Shade	256 by 14 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-21 07:00AM Shade	90 by 1 Copy to clipboard
2023-03-21 08:30AM Shade	107 by 16 Copy to clipboard
2023-03-21 10:00AM Shade	126 by 31 Copy to clipboard
2023-03-21 11:30AM Shade	151 by 41 Copy to clipboard
2023-03-21 01:00PM Shade	181 by 45 Copy to clipboard
2023-03-21 02:30PM Shade	211 by 41 Copy to clipboard
2023-03-21 04:00PM Shade	236 by 30 Copy to clipboard
2023-03-21 05:30PM Shade	255 by 15 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-21 07:00AM Shade	90 by 1 Copy to clipboard
2023-03-21 08:30AM Shade	107 by 17 Copy to clipboard
2023-03-21 10:00AM Shade	126 by 31 Copy to clipboard
2023-03-21 11:30AM Shade	151 by 41 Copy to clipboard
2023-03-21 01:00PM Shade	181 by 45 Copy to clipboard
2023-03-21 02:30PM Shade	212 by 41 Copy to clipboard
2023-03-21 04:00PM Shade	236 by 30 Copy to clipboard
2023-03-21 05:30PM Shade	255 by 15 Copy to clipboard

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