Wyoming 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: Greys River Tetons Togwotee Pass Big Horns Sierra Madre Snowy Range

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Greys River

Pre-populated CalTopo Map

Tetons

Pre-populated CalTopo Map

Togwotee Pass

Pre-populated CalTopo Map

Big Horns

Pre-populated CalTopo Map

Sierra Madre

Pre-populated CalTopo Map

Snowy Range

Pre-populated CalTopo Map

Avalanche Report

2023-03-20 Avalanche Danger

• Moderate danger (9001' to 10500')
• Moderate danger (7501' to 9000')
• Low danger (below 7500')

a0-0e9001-10500f fff200
a0-0e7501-9000f fff200
a0-0e6000-7500f 50b848

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2023-03-21 Wind Slab

• All aspects (9001' to 10500')

a158-158e9001-10500f A200FF

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2023-03-21 Persistent Slab

• All aspects (9001' to 10500')
• All aspects (7501' to 9000')
• All aspects (below 7500')

a158-158e9001-10500f 0000FF
a158-158e7501-9000f 0000FF
a158-158e6000-7500f 0000FF

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Issued at: Monday, March 20, 2023 5:48AM
Issued by: BTAC

2023-03-20 Avalanche Danger

• Moderate danger (above 9001')
• Low danger (7501' to 9000')
• Low danger (below 7500')

a0-0e9001-20310f fff200
a0-0e7501-9000f 50b848
a0-0e6000-7500f 50b848

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2023-03-21 Wind Slab

• All aspects (above 9001')

a158-158e9001-20310f A200FF

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Issued at: Monday, March 20, 2023 5:41AM
Issued by: BTAC

2023-03-20 Avalanche Danger

• Moderate danger (above 8501')
• Moderate danger (7501' to 8500')
• No rating (below 7501')

a0-0e8501-20310f fff200
a0-0e7501-8500f fff200
a0-0e0-7501f 939598

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2023-03-21 Persistent Slab

• All aspects (above 8501')
• All aspects (7501' to 8500')

a158-158e8501-20310f A200FF
a158-158e7501-8500f A200FF

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Issued at: Monday, March 20, 2023 6:03AM
Issued by: BTAC

Report not available. See EWYAIX for more information.

Report not available. See EWYAIX for more information.

Report not available. See EWYAIX for more information.

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-03-21 07:40AM Shade	91 by 2 Copy to clipboard
2023-03-21 09:10AM Shade	107 by 18 Copy to clipboard
2023-03-21 10:40AM Shade	126 by 33 Copy to clipboard
2023-03-21 12:10PM Shade	152 by 44 Copy to clipboard
2023-03-21 01:40PM Shade	184 by 47 Copy to clipboard
2023-03-21 03:10PM Shade	215 by 42 Copy to clipboard
2023-03-21 04:40PM Shade	238 by 30 Copy to clipboard
2023-03-21 06:10PM Shade	256 by 15 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-21 07:40AM Shade	91 by 2 Copy to clipboard
2023-03-21 09:10AM Shade	108 by 18 Copy to clipboard
2023-03-21 10:40AM Shade	127 by 32 Copy to clipboard
2023-03-21 12:10PM Shade	152 by 43 Copy to clipboard
2023-03-21 01:40PM Shade	184 by 47 Copy to clipboard
2023-03-21 03:10PM Shade	214 by 41 Copy to clipboard
2023-03-21 04:40PM Shade	238 by 30 Copy to clipboard
2023-03-21 06:10PM Shade	256 by 15 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-21 07:30AM Shade	90 by 1 Copy to clipboard
2023-03-21 09:00AM Shade	106 by 17 Copy to clipboard
2023-03-21 10:30AM Shade	125 by 31 Copy to clipboard
2023-03-21 12:00PM Shade	150 by 42 Copy to clipboard
2023-03-21 01:30PM Shade	181 by 47 Copy to clipboard
2023-03-21 03:00PM Shade	212 by 42 Copy to clipboard
2023-03-21 04:30PM Shade	236 by 31 Copy to clipboard
2023-03-21 06:00PM Shade	255 by 16 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-20 07:30AM Shade	92 by 2 Copy to clipboard
2023-03-20 09:00AM Shade	109 by 18 Copy to clipboard
2023-03-20 10:30AM Shade	128 by 32 Copy to clipboard
2023-03-20 12:00PM Shade	154 by 42 Copy to clipboard
2023-03-20 01:30PM Shade	185 by 45 Copy to clipboard
2023-03-20 03:00PM Shade	215 by 40 Copy to clipboard
2023-03-20 04:30PM Shade	238 by 28 Copy to clipboard
2023-03-20 06:00PM Shade	256 by 14 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	106 by 17 Copy to clipboard
2023-03-20 10:20AM Shade	124 by 33 Copy to clipboard
2023-03-20 11:50AM Shade	149 by 44 Copy to clipboard
2023-03-20 01:20PM Shade	181 by 49 Copy to clipboard
2023-03-20 02:50PM Shade	213 by 44 Copy to clipboard
2023-03-20 04:20PM Shade	237 by 31 Copy to clipboard
2023-03-20 05:50PM Shade	255 by 16 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	107 by 18 Copy to clipboard
2023-03-20 10:20AM Shade	125 by 33 Copy to clipboard
2023-03-20 11:50AM Shade	150 by 45 Copy to clipboard
2023-03-20 01:20PM Shade	183 by 49 Copy to clipboard
2023-03-20 02:50PM Shade	214 by 43 Copy to clipboard
2023-03-20 04:20PM Shade	238 by 31 Copy to clipboard
2023-03-20 05:50PM Shade	256 by 15 Copy to clipboard

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