Alaska 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: Cordova Eastern Alaska Range Haines Chilkat Pass Haines Lutak Haines Transitional Valdez Continental Valdez Intermountain Valdez Maritime Chugach State Park Seward and Lost Lake Summit Lake Turnagain Pass Cordova City/Borough Juneau Juneau Hatcher Pass

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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

Pre-populated CalTopo Map

Pre-populated CalTopo Map

Pre-populated CalTopo Map

Pre-populated CalTopo Map

Pre-populated CalTopo Map

Pre-populated CalTopo Map

Pre-populated CalTopo Map

Pre-populated CalTopo Map

Pre-populated CalTopo Map

Pre-populated CalTopo Map

Cordova
Avalanche Report

Report not available. See AAIC for more information.

Eastern Alaska Range
Avalanche Report

Report not available. See AAIC for more information.

Haines Chilkat Pass
Avalanche Report

Report not available. See AAIC for more information.

Haines Lutak
Avalanche Report

Report not available. See AAIC for more information.

Haines Transitional
Avalanche Report

Report not available. See AAIC for more information.

Valdez Continental
Avalanche Report

Report not available. See AAIC for more information.

Valdez Intermountain
Avalanche Report

Report not available. See AAIC for more information.

Valdez Maritime
Avalanche Report

Report not available. See AAIC for more information.

Chugach State Park
Avalanche Report

Report not available. See CNFAIC for more information.

Seward and Lost Lake
Avalanche Report

Report not available. See CNFAIC for more information.

Summit Lake
Avalanche Report

Report not available. See CNFAIC for more information.

Turnagain Pass
Avalanche Report

Report not available. See CNFAIC for more information.

Issued at: Saturday, April 01, 2023 7:00AM
Issued by: CNFAIC

Cordova City/Borough
Avalanche Report

Report not available. See CTCAK for more information.

Juneau
Avalanche Report

Report not available. See JUAK for more information.

Juneau
Avalanche Report

Report not available. See CAAC for more information.

Hatcher Pass
Avalanche Report

Report not available. See HPAC for more information.

Issued at: Saturday, April 01, 2023 7:00AM
Issued by: HPAC

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 07:20AM Shade	82 by 1 Copy to clipboard
2023-04-02 08:50AM Shade	102 by 12 Copy to clipboard
2023-04-02 10:20AM Shade	123 by 23 Copy to clipboard
2023-04-02 11:50AM Shade	146 by 30 Copy to clipboard
2023-04-02 01:20PM Shade	173 by 34 Copy to clipboard
2023-04-02 02:50PM Shade	200 by 33 Copy to clipboard
2023-04-02 04:20PM Shade	225 by 27 Copy to clipboard
2023-04-02 05:50PM Shade	247 by 18 Copy to clipboard
2023-04-02 07:20PM Shade	267 by 8 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 07:20AM Shade	82 by 2 Copy to clipboard
2023-04-02 08:50AM Shade	102 by 12 Copy to clipboard
2023-04-02 10:20AM Shade	123 by 21 Copy to clipboard
2023-04-02 11:50AM Shade	147 by 28 Copy to clipboard
2023-04-02 01:20PM Shade	172 by 32 Copy to clipboard
2023-04-02 02:50PM Shade	199 by 31 Copy to clipboard
2023-04-02 04:20PM Shade	223 by 25 Copy to clipboard
2023-04-02 05:50PM Shade	246 by 17 Copy to clipboard
2023-04-02 07:20PM Shade	267 by 8 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 07:40AM Shade	81 by 1 Copy to clipboard
2023-04-02 09:10AM Shade	101 by 12 Copy to clipboard
2023-04-02 10:40AM Shade	121 by 22 Copy to clipboard
2023-04-02 12:10PM Shade	145 by 31 Copy to clipboard
2023-04-02 01:40PM Shade	171 by 35 Copy to clipboard
2023-04-02 03:10PM Shade	198 by 34 Copy to clipboard
2023-04-02 04:40PM Shade	224 by 28 Copy to clipboard
2023-04-02 06:10PM Shade	246 by 19 Copy to clipboard
2023-04-02 07:40PM Shade	266 by 8 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 06:40AM Shade	82 by 1 Copy to clipboard
2023-04-02 08:10AM Shade	101 by 12 Copy to clipboard
2023-04-02 09:40AM Shade	122 by 23 Copy to clipboard
2023-04-02 11:10AM Shade	146 by 31 Copy to clipboard
2023-04-02 12:40PM Shade	172 by 36 Copy to clipboard
2023-04-02 02:10PM Shade	199 by 34 Copy to clipboard
2023-04-02 03:40PM Shade	225 by 28 Copy to clipboard
2023-04-02 05:10PM Shade	247 by 19 Copy to clipboard
2023-04-02 06:40PM Shade	267 by 8 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 06:40AM Shade	81 by 1 Copy to clipboard
2023-04-02 08:10AM Shade	101 by 12 Copy to clipboard
2023-04-02 09:40AM Shade	122 by 23 Copy to clipboard
2023-04-02 11:10AM Shade	145 by 31 Copy to clipboard
2023-04-02 12:40PM Shade	171 by 35 Copy to clipboard
2023-04-02 02:10PM Shade	199 by 34 Copy to clipboard
2023-04-02 03:40PM Shade	224 by 28 Copy to clipboard
2023-04-02 05:10PM Shade	246 by 19 Copy to clipboard
2023-04-02 06:40PM Shade	267 by 8 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 07:20AM Shade	82 by 1 Copy to clipboard
2023-04-02 08:50AM Shade	102 by 12 Copy to clipboard
2023-04-02 10:20AM Shade	123 by 22 Copy to clipboard
2023-04-02 11:50AM Shade	146 by 30 Copy to clipboard
2023-04-02 01:20PM Shade	172 by 34 Copy to clipboard
2023-04-02 02:50PM Shade	199 by 33 Copy to clipboard
2023-04-02 04:20PM Shade	224 by 27 Copy to clipboard
2023-04-02 05:50PM Shade	247 by 18 Copy to clipboard
2023-04-02 07:20PM Shade	267 by 8 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 07:20AM Shade	82 by 1 Copy to clipboard
2023-04-02 08:50AM Shade	102 by 12 Copy to clipboard
2023-04-02 10:20AM Shade	123 by 22 Copy to clipboard
2023-04-02 11:50AM Shade	146 by 30 Copy to clipboard
2023-04-02 01:20PM Shade	172 by 34 Copy to clipboard
2023-04-02 02:50PM Shade	199 by 33 Copy to clipboard
2023-04-02 04:20PM Shade	224 by 27 Copy to clipboard
2023-04-02 05:50PM Shade	246 by 18 Copy to clipboard
2023-04-02 07:20PM Shade	267 by 8 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 07:20AM Shade	81 by 1 Copy to clipboard
2023-04-02 08:50AM Shade	101 by 12 Copy to clipboard
2023-04-02 10:20AM Shade	122 by 22 Copy to clipboard
2023-04-02 11:50AM Shade	146 by 30 Copy to clipboard
2023-04-02 01:20PM Shade	172 by 34 Copy to clipboard
2023-04-02 02:50PM Shade	198 by 33 Copy to clipboard
2023-04-02 04:20PM Shade	224 by 27 Copy to clipboard
2023-04-02 05:50PM Shade	246 by 18 Copy to clipboard
2023-04-02 07:20PM Shade	266 by 8 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 07:30AM Shade	81 by 1 Copy to clipboard
2023-04-02 09:00AM Shade	100 by 11 Copy to clipboard
2023-04-02 10:30AM Shade	121 by 22 Copy to clipboard
2023-04-02 12:00PM Shade	145 by 29 Copy to clipboard
2023-04-02 01:30PM Shade	171 by 34 Copy to clipboard
2023-04-02 03:00PM Shade	197 by 33 Copy to clipboard
2023-04-02 04:30PM Shade	223 by 28 Copy to clipboard
2023-04-02 06:00PM Shade	245 by 19 Copy to clipboard
2023-04-02 07:30PM Shade	266 by 8 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 07:40AM Shade	83 by 2 Copy to clipboard
2023-04-02 09:10AM Shade	102 by 13 Copy to clipboard
2023-04-02 10:40AM Shade	123 by 23 Copy to clipboard
2023-04-02 12:10PM Shade	147 by 31 Copy to clipboard
2023-04-02 01:40PM Shade	173 by 35 Copy to clipboard
2023-04-02 03:10PM Shade	200 by 33 Copy to clipboard
2023-04-02 04:40PM Shade	226 by 27 Copy to clipboard
2023-04-02 06:10PM Shade	248 by 18 Copy to clipboard
2023-04-02 07:40PM Shade	268 by 7 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 07:30AM Shade	81 by 1 Copy to clipboard
2023-04-02 09:00AM Shade	100 by 12 Copy to clipboard
2023-04-02 10:30AM Shade	121 by 22 Copy to clipboard
2023-04-02 12:00PM Shade	145 by 30 Copy to clipboard
2023-04-02 01:30PM Shade	171 by 34 Copy to clipboard
2023-04-02 03:00PM Shade	198 by 33 Copy to clipboard
2023-04-02 04:30PM Shade	223 by 28 Copy to clipboard
2023-04-02 06:00PM Shade	245 by 19 Copy to clipboard
2023-04-02 07:30PM Shade	266 by 8 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 07:30AM Shade	81 by 1 Copy to clipboard
2023-04-02 09:00AM Shade	101 by 12 Copy to clipboard
2023-04-02 10:30AM Shade	122 by 22 Copy to clipboard
2023-04-02 12:00PM Shade	145 by 30 Copy to clipboard
2023-04-02 01:30PM Shade	171 by 34 Copy to clipboard
2023-04-02 03:00PM Shade	198 by 33 Copy to clipboard
2023-04-02 04:30PM Shade	223 by 28 Copy to clipboard
2023-04-02 06:00PM Shade	246 by 19 Copy to clipboard
2023-04-02 07:30PM Shade	266 by 8 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 07:20AM Shade	82 by 1 Copy to clipboard
2023-04-02 08:50AM Shade	102 by 12 Copy to clipboard
2023-04-02 10:20AM Shade	123 by 23 Copy to clipboard
2023-04-02 11:50AM Shade	146 by 30 Copy to clipboard
2023-04-02 01:20PM Shade	172 by 34 Copy to clipboard
2023-04-02 02:50PM Shade	199 by 33 Copy to clipboard
2023-04-02 04:20PM Shade	225 by 27 Copy to clipboard
2023-04-02 05:50PM Shade	247 by 18 Copy to clipboard
2023-04-02 07:20PM Shade	267 by 8 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 06:40AM Shade	83 by 1 Copy to clipboard
2023-04-02 08:10AM Shade	102 by 13 Copy to clipboard
2023-04-02 09:40AM Shade	123 by 24 Copy to clipboard
2023-04-02 11:10AM Shade	147 by 33 Copy to clipboard
2023-04-02 12:40PM Shade	173 by 37 Copy to clipboard
2023-04-02 02:10PM Shade	201 by 35 Copy to clipboard
2023-04-02 03:40PM Shade	226 by 29 Copy to clipboard
2023-04-02 05:10PM Shade	248 by 19 Copy to clipboard
2023-04-02 06:40PM Shade	268 by 7 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 06:40AM Shade	83 by 1 Copy to clipboard
2023-04-02 08:10AM Shade	102 by 13 Copy to clipboard
2023-04-02 09:40AM Shade	123 by 24 Copy to clipboard
2023-04-02 11:10AM Shade	146 by 32 Copy to clipboard
2023-04-02 12:40PM Shade	173 by 36 Copy to clipboard
2023-04-02 02:10PM Shade	201 by 35 Copy to clipboard
2023-04-02 03:40PM Shade	226 by 29 Copy to clipboard
2023-04-02 05:10PM Shade	248 by 19 Copy to clipboard
2023-04-02 06:40PM Shade	268 by 7 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-02 07:30AM Shade	81 by 1 Copy to clipboard
2023-04-02 09:00AM Shade	101 by 11 Copy to clipboard
2023-04-02 10:30AM Shade	122 by 21 Copy to clipboard
2023-04-02 12:00PM Shade	145 by 29 Copy to clipboard
2023-04-02 01:30PM Shade	171 by 33 Copy to clipboard
2023-04-02 03:00PM Shade	198 by 32 Copy to clipboard
2023-04-02 04:30PM Shade	223 by 27 Copy to clipboard
2023-04-02 06:00PM Shade	245 by 18 Copy to clipboard
2023-04-02 07:30PM Shade	266 by 8 Copy to clipboard

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