Wyoming Avalanche Maps

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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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Pre-populated CalTopo Map

Pre-populated CalTopo Map

Pre-populated CalTopo Map

Pre-populated CalTopo Map

Pre-populated CalTopo Map

Pre-populated CalTopo Map

Greys River
Avalanche Report

2023-04-02 Avalanche Danger

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

a0-0e9001-10500f f7941e
a0-0e7501-9000f fff200
a0-0e6000-7500f fff200

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2023-04-02 Wind Slab

• All aspects (9001' to 10500')
• NW to S aspects (7501' to 9000')

a158-158e9001-10500f A200FF
a293-203e7501-9000f A200FF

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2023-04-02 Persistent Slab

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

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

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Issued at: Saturday, April 01, 2023 7:14AM
Issued by: BTAC

Tetons
Avalanche Report

2023-04-02 Avalanche Danger

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

a0-0e9001-20310f f7941e
a0-0e7501-9000f fff200
a0-0e6000-7500f 50b848

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2023-04-02 Wind Slab

• All aspects (above 9001')
• NW to S aspects (7501' to 9000')

a23-23e9001-20310f A200FF
a293-203e7501-9000f A200FF

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2023-04-02 Persistent Slab

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

a158-158e9001-20310f 0000FF
a158-158e7501-9000f 0000FF

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Issued at: Saturday, April 01, 2023 7:07AM
Issued by: BTAC

Togwotee Pass
Avalanche Report

2023-04-02 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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2023-04-02 Wind Slab

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

a113-113e8501-20310f A200FF
a293-203e7501-8500f A200FF

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2023-04-02 Persistent Slab

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

a158-158e8501-20310f 0000FF
a158-158e7501-8500f 0000FF

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Issued at: Saturday, April 01, 2023 7:11AM
Issued by: BTAC

Big Horns
Avalanche Report

Report not available. See EWYAIX for more information.

Sierra Madre
Avalanche Report

Report not available. See EWYAIX for more information.

Snowy Range
Avalanche Report

Report not available. See EWYAIX for more information.

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 07:20AM Shade	85 by 2 Copy to clipboard
2023-04-02 08:50AM Shade	101 by 19 Copy to clipboard
2023-04-02 10:20AM Shade	119 by 34 Copy to clipboard
2023-04-02 11:50AM Shade	144 by 47 Copy to clipboard
2023-04-02 01:20PM Shade	177 by 52 Copy to clipboard
2023-04-02 02:50PM Shade	212 by 48 Copy to clipboard
2023-04-02 04:20PM Shade	238 by 36 Copy to clipboard
2023-04-02 05:50PM Shade	257 by 21 Copy to clipboard
2023-04-02 07:20PM Shade	273 by 5 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 07:20AM Shade	85 by 2 Copy to clipboard
2023-04-02 08:50AM Shade	101 by 18 Copy to clipboard
2023-04-02 10:20AM Shade	119 by 34 Copy to clipboard
2023-04-02 11:50AM Shade	144 by 46 Copy to clipboard
2023-04-02 01:20PM Shade	177 by 51 Copy to clipboard
2023-04-02 02:50PM Shade	211 by 47 Copy to clipboard
2023-04-02 04:20PM Shade	237 by 36 Copy to clipboard
2023-04-02 05:50PM Shade	257 by 21 Copy to clipboard
2023-04-02 07:20PM Shade	273 by 5 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 07:10AM Shade	84 by 1 Copy to clipboard
2023-04-02 08:40AM Shade	100 by 17 Copy to clipboard
2023-04-02 10:10AM Shade	118 by 32 Copy to clipboard
2023-04-02 11:40AM Shade	142 by 45 Copy to clipboard
2023-04-02 01:10PM Shade	174 by 51 Copy to clipboard
2023-04-02 02:40PM Shade	209 by 48 Copy to clipboard
2023-04-02 04:10PM Shade	236 by 37 Copy to clipboard
2023-04-02 05:40PM Shade	255 by 22 Copy to clipboard
2023-04-02 07:10PM Shade	271 by 6 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 07:00AM Shade	84 by 1 Copy to clipboard
2023-04-02 08:30AM Shade	100 by 17 Copy to clipboard
2023-04-02 10:00AM Shade	118 by 32 Copy to clipboard
2023-04-02 11:30AM Shade	143 by 45 Copy to clipboard
2023-04-02 01:00PM Shade	175 by 50 Copy to clipboard
2023-04-02 02:30PM Shade	209 by 47 Copy to clipboard
2023-04-02 04:00PM Shade	235 by 36 Copy to clipboard
2023-04-02 05:30PM Shade	255 by 22 Copy to clipboard
2023-04-02 07:00PM Shade	271 by 6 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 07:00AM Shade	84 by 1 Copy to clipboard
2023-04-02 08:30AM Shade	99 by 18 Copy to clipboard
2023-04-02 10:00AM Shade	117 by 34 Copy to clipboard
2023-04-02 11:30AM Shade	141 by 47 Copy to clipboard
2023-04-02 01:00PM Shade	175 by 54 Copy to clipboard
2023-04-02 02:30PM Shade	211 by 50 Copy to clipboard
2023-04-02 04:00PM Shade	238 by 38 Copy to clipboard
2023-04-02 05:30PM Shade	256 by 22 Copy to clipboard
2023-04-02 07:00PM Shade	272 by 6 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 07:00AM Shade	85 by 2 Copy to clipboard
2023-04-02 08:30AM Shade	100 by 18 Copy to clipboard
2023-04-02 10:00AM Shade	118 by 34 Copy to clipboard
2023-04-02 11:30AM Shade	142 by 47 Copy to clipboard
2023-04-02 01:00PM Shade	176 by 54 Copy to clipboard
2023-04-02 02:30PM Shade	212 by 49 Copy to clipboard
2023-04-02 04:00PM Shade	238 by 37 Copy to clipboard
2023-04-02 05:30PM Shade	257 by 22 Copy to clipboard
2023-04-02 07:00PM Shade	272 by 5 Copy to clipboard

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