Idaho 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: Selkirks & Cabinets St. Regis & Silver Valley PAC Advisory Area Banner Summit Galena Summit & Eastern Mtns Sawtooth & Western Smoky Mtns Soldier & Wood River Valley Mtns

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Selkirks & Cabinets

Pre-populated CalTopo Map

St. Regis & Silver Valley

Pre-populated CalTopo Map

PAC Advisory Area

Pre-populated CalTopo Map

Banner Summit

Pre-populated CalTopo Map

Galena Summit & Eastern Mtns

Pre-populated CalTopo Map

Sawtooth & Western Smoky Mtns

Pre-populated CalTopo Map

Soldier & Wood River Valley Mtns

Pre-populated CalTopo Map

Avalanche Report

Report not available. See IPAC for more information.

Issued at: Sunday, March 19, 2023 6:46AM
Issued by: IPAC

Report not available. See IPAC for more information.

Issued at: Sunday, March 19, 2023 6:30AM
Issued by: IPAC

Report not available. See PAC for more information.

Issued at: Sunday, March 19, 2023 5:00AM
Issued by: PAC

2023-03-21 Avalanche Danger

• Moderate danger (above 8501')
• Moderate danger (7501' to 8500')
• Moderate danger (below 7500')

a0-0e8501-20310f fff200
a0-0e7501-8500f fff200
a0-0e0-7500f fff200

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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 6:12AM
Issued by: SNFAC

2023-03-21 Avalanche Danger

• Considerable danger (above 9501')
• Considerable danger (7501' to 9500')
• Moderate danger (below 7500')

a0-0e9501-20310f f7941e
a0-0e7501-9500f f7941e
a0-0e0-7500f fff200

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2023-03-21 Persistent Slab

• All aspects (above 9501')
• All aspects (7501' to 9500')

a68-68e9501-20310f A200FF
a158-158e7501-9500f A200FF

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Issued at: Monday, March 20, 2023 6:11AM
Issued by: SNFAC

2023-03-21 Avalanche Danger

• Moderate danger (above 8501')
• Moderate danger (6501' to 8500')
• Moderate danger (below 6500')

a0-0e8501-20310f fff200
a0-0e6501-8500f fff200
a0-0e0-6500f fff200

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2023-03-21 Persistent Slab

• All aspects (above 8501')
• All aspects (6501' to 8500')

a158-158e8501-20310f A200FF
a339-339e6501-8500f A200FF

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Issued at: Monday, March 20, 2023 6:12AM
Issued by: SNFAC

Report not available. See SNFAC for more information.

Issued at: Monday, March 20, 2023 6:10AM
Issued by: SNFAC

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-03-20 07:00AM Shade	92 by 1 Copy to clipboard
2023-03-20 08:30AM Shade	109 by 16 Copy to clipboard
2023-03-20 10:00AM Shade	129 by 29 Copy to clipboard
2023-03-20 11:30AM Shade	153 by 38 Copy to clipboard
2023-03-20 01:00PM Shade	183 by 42 Copy to clipboard
2023-03-20 02:30PM Shade	211 by 37 Copy to clipboard
2023-03-20 04:00PM Shade	235 by 27 Copy to clipboard
2023-03-20 05:30PM Shade	254 by 13 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-20 07:00AM Shade	92 by 1 Copy to clipboard
2023-03-20 08:30AM Shade	109 by 16 Copy to clipboard
2023-03-20 10:00AM Shade	129 by 30 Copy to clipboard
2023-03-20 11:30AM Shade	153 by 39 Copy to clipboard
2023-03-20 01:00PM Shade	183 by 42 Copy to clipboard
2023-03-20 02:30PM Shade	212 by 38 Copy to clipboard
2023-03-20 04:00PM Shade	236 by 27 Copy to clipboard
2023-03-20 05:30PM Shade	255 by 14 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-20 08:00AM Shade	91 by 1 Copy to clipboard
2023-03-20 09:30AM Shade	108 by 17 Copy to clipboard
2023-03-20 11:00AM Shade	127 by 31 Copy to clipboard
2023-03-20 12:30PM Shade	152 by 42 Copy to clipboard
2023-03-20 02:00PM Shade	183 by 45 Copy to clipboard
2023-03-20 03:30PM Shade	213 by 40 Copy to clipboard
2023-03-20 05:00PM Shade	237 by 29 Copy to clipboard
2023-03-20 06:30PM Shade	255 by 14 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-21 07:50AM Shade	90 by 1 Copy to clipboard
2023-03-21 09:20AM Shade	106 by 16 Copy to clipboard
2023-03-21 10:50AM Shade	125 by 31 Copy to clipboard
2023-03-21 12:20PM Shade	150 by 42 Copy to clipboard
2023-03-21 01:50PM Shade	181 by 46 Copy to clipboard
2023-03-21 03:20PM Shade	211 by 41 Copy to clipboard
2023-03-21 04:50PM Shade	236 by 30 Copy to clipboard
2023-03-21 06:20PM Shade	255 by 16 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-21 07:50AM Shade	91 by 1 Copy to clipboard
2023-03-21 09:20AM Shade	107 by 17 Copy to clipboard
2023-03-21 10:50AM Shade	126 by 32 Copy to clipboard
2023-03-21 12:20PM Shade	150 by 42 Copy to clipboard
2023-03-21 01:50PM Shade	182 by 46 Copy to clipboard
2023-03-21 03:20PM Shade	213 by 42 Copy to clipboard
2023-03-21 04:50PM Shade	237 by 30 Copy to clipboard
2023-03-21 06:20PM Shade	255 by 15 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-21 07:50AM Shade	90 by 1 Copy to clipboard
2023-03-21 09:20AM Shade	106 by 17 Copy to clipboard
2023-03-21 10:50AM Shade	125 by 31 Copy to clipboard
2023-03-21 12:20PM Shade	150 by 42 Copy to clipboard
2023-03-21 01:50PM Shade	181 by 46 Copy to clipboard
2023-03-21 03:20PM Shade	212 by 42 Copy to clipboard
2023-03-21 04:50PM Shade	236 by 30 Copy to clipboard
2023-03-21 06:20PM Shade	255 by 16 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-21 07:50AM Shade	91 by 1 Copy to clipboard
2023-03-21 09:20AM Shade	107 by 17 Copy to clipboard
2023-03-21 10:50AM Shade	125 by 32 Copy to clipboard
2023-03-21 12:20PM Shade	150 by 43 Copy to clipboard
2023-03-21 01:50PM Shade	182 by 47 Copy to clipboard
2023-03-21 03:20PM Shade	213 by 42 Copy to clipboard
2023-03-21 04:50PM Shade	237 by 30 Copy to clipboard
2023-03-21 06:20PM Shade	255 by 16 Copy to clipboard

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