Alaska 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: 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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Cordova

Pre-populated CalTopo Map

Eastern Alaska Range

Pre-populated CalTopo Map

Haines Chilkat Pass

Pre-populated CalTopo Map

Haines Lutak

Pre-populated CalTopo Map

Haines Transitional

Pre-populated CalTopo Map

Valdez Continental

Pre-populated CalTopo Map

Valdez Intermountain

Pre-populated CalTopo Map

Valdez Maritime

Pre-populated CalTopo Map

Chugach State Park

Pre-populated CalTopo Map

Seward and Lost Lake

Pre-populated CalTopo Map

Summit Lake

Pre-populated CalTopo Map

Turnagain Pass

Pre-populated CalTopo Map

Cordova City/Borough

Pre-populated CalTopo Map

Juneau

Pre-populated CalTopo Map

Juneau

Pre-populated CalTopo Map

Hatcher Pass

Pre-populated CalTopo Map

Avalanche Report

Report not available. See AAIC for more information.

Report not available. See AAIC for more information.

Report not available. See AAIC for more information.

Report not available. See AAIC for more information.

Report not available. See AAIC for more information.

Report not available. See AAIC for more information.

Report not available. See AAIC for more information.

Report not available. See AAIC for more information.

Report not available. See CNFAIC for more information.

Report not available. See CNFAIC for more information.

Report not available. See CNFAIC for more information.

Report not available. See CNFAIC for more information.

Issued at: Monday, March 20, 2023 8:00AM
Issued by: CNFAIC

Report not available. See CTCAK for more information.

Report not available. See JUAK for more information.

Report not available. See CAAC for more information.

Report not available. See HPAC for more information.

Issued at: Saturday, March 18, 2023 8:00AM
Issued by: HPAC

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-03-20 08:00AM Shade	92 by 1 Copy to clipboard
2023-03-20 09:30AM Shade	112 by 12 Copy to clipboard
2023-03-20 11:00AM Shade	134 by 21 Copy to clipboard
2023-03-20 12:30PM Shade	158 by 28 Copy to clipboard
2023-03-20 02:00PM Shade	183 by 29 Copy to clipboard
2023-03-20 03:30PM Shade	209 by 26 Copy to clipboard
2023-03-20 05:00PM Shade	232 by 19 Copy to clipboard
2023-03-20 06:30PM Shade	253 by 10 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-20 08:00AM Shade	92 by 1 Copy to clipboard
2023-03-20 09:30AM Shade	113 by 11 Copy to clipboard
2023-03-20 11:00AM Shade	134 by 19 Copy to clipboard
2023-03-20 12:30PM Shade	158 by 25 Copy to clipboard
2023-03-20 02:00PM Shade	183 by 27 Copy to clipboard
2023-03-20 03:30PM Shade	208 by 24 Copy to clipboard
2023-03-20 05:00PM Shade	231 by 18 Copy to clipboard
2023-03-20 06:30PM Shade	252 by 9 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-20 08:20AM Shade	91 by 1 Copy to clipboard
2023-03-20 09:50AM Shade	111 by 12 Copy to clipboard
2023-03-20 11:20AM Shade	132 by 21 Copy to clipboard
2023-03-20 12:50PM Shade	156 by 28 Copy to clipboard
2023-03-20 02:20PM Shade	182 by 30 Copy to clipboard
2023-03-20 03:50PM Shade	207 by 27 Copy to clipboard
2023-03-20 05:20PM Shade	231 by 20 Copy to clipboard
2023-03-20 06:50PM Shade	252 by 10 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-20 07:20AM Shade	92 by 1 Copy to clipboard
2023-03-20 08:50AM Shade	112 by 12 Copy to clipboard
2023-03-20 10:20AM Shade	133 by 22 Copy to clipboard
2023-03-20 11:50AM Shade	157 by 29 Copy to clipboard
2023-03-20 01:20PM Shade	183 by 31 Copy to clipboard
2023-03-20 02:50PM Shade	209 by 28 Copy to clipboard
2023-03-20 04:20PM Shade	232 by 20 Copy to clipboard
2023-03-20 05:50PM Shade	253 by 10 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-20 07:20AM Shade	92 by 1 Copy to clipboard
2023-03-20 08:50AM Shade	111 by 12 Copy to clipboard
2023-03-20 10:20AM Shade	133 by 22 Copy to clipboard
2023-03-20 11:50AM Shade	156 by 28 Copy to clipboard
2023-03-20 01:20PM Shade	182 by 31 Copy to clipboard
2023-03-20 02:50PM Shade	208 by 28 Copy to clipboard
2023-03-20 04:20PM Shade	231 by 20 Copy to clipboard
2023-03-20 05:50PM Shade	252 by 10 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-20 08:00AM Shade	92 by 1 Copy to clipboard
2023-03-20 09:30AM Shade	112 by 12 Copy to clipboard
2023-03-20 11:00AM Shade	134 by 21 Copy to clipboard
2023-03-20 12:30PM Shade	158 by 27 Copy to clipboard
2023-03-20 02:00PM Shade	183 by 29 Copy to clipboard
2023-03-20 03:30PM Shade	208 by 26 Copy to clipboard
2023-03-20 05:00PM Shade	231 by 19 Copy to clipboard
2023-03-20 06:30PM Shade	253 by 9 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-20 08:00AM Shade	92 by 1 Copy to clipboard
2023-03-20 09:30AM Shade	112 by 12 Copy to clipboard
2023-03-20 11:00AM Shade	134 by 21 Copy to clipboard
2023-03-20 12:30PM Shade	157 by 27 Copy to clipboard
2023-03-20 02:00PM Shade	183 by 29 Copy to clipboard
2023-03-20 03:30PM Shade	208 by 26 Copy to clipboard
2023-03-20 05:00PM Shade	231 by 19 Copy to clipboard
2023-03-20 06:30PM Shade	252 by 10 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-20 08:00AM Shade	92 by 1 Copy to clipboard
2023-03-20 09:30AM Shade	112 by 12 Copy to clipboard
2023-03-20 11:00AM Shade	133 by 21 Copy to clipboard
2023-03-20 12:30PM Shade	157 by 27 Copy to clipboard
2023-03-20 02:00PM Shade	182 by 29 Copy to clipboard
2023-03-20 03:30PM Shade	208 by 26 Copy to clipboard
2023-03-20 05:00PM Shade	231 by 19 Copy to clipboard
2023-03-20 06:30PM Shade	252 by 10 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-20 08:20AM Shade	93 by 2 Copy to clipboard
2023-03-20 09:50AM Shade	113 by 12 Copy to clipboard
2023-03-20 11:20AM Shade	135 by 21 Copy to clipboard
2023-03-20 12:50PM Shade	159 by 27 Copy to clipboard
2023-03-20 02:20PM Shade	184 by 29 Copy to clipboard
2023-03-20 03:50PM Shade	209 by 26 Copy to clipboard
2023-03-20 05:20PM Shade	232 by 19 Copy to clipboard
2023-03-20 06:50PM Shade	253 by 9 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-20 08:20AM Shade	93 by 2 Copy to clipboard
2023-03-20 09:50AM Shade	113 by 13 Copy to clipboard
2023-03-20 11:20AM Shade	135 by 22 Copy to clipboard
2023-03-20 12:50PM Shade	159 by 28 Copy to clipboard
2023-03-20 02:20PM Shade	184 by 30 Copy to clipboard
2023-03-20 03:50PM Shade	209 by 26 Copy to clipboard
2023-03-20 05:20PM Shade	233 by 19 Copy to clipboard
2023-03-20 06:50PM Shade	254 by 9 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-20 08:20AM Shade	93 by 2 Copy to clipboard
2023-03-20 09:50AM Shade	113 by 12 Copy to clipboard
2023-03-20 11:20AM Shade	135 by 22 Copy to clipboard
2023-03-20 12:50PM Shade	159 by 28 Copy to clipboard
2023-03-20 02:20PM Shade	184 by 29 Copy to clipboard
2023-03-20 03:50PM Shade	209 by 26 Copy to clipboard
2023-03-20 05:20PM Shade	233 by 19 Copy to clipboard
2023-03-20 06:50PM Shade	254 by 9 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-21 08:10AM Shade	91 by 1 Copy to clipboard
2023-03-21 09:40AM Shade	111 by 12 Copy to clipboard
2023-03-21 11:10AM Shade	133 by 21 Copy to clipboard
2023-03-21 12:40PM Shade	156 by 27 Copy to clipboard
2023-03-21 02:10PM Shade	182 by 30 Copy to clipboard
2023-03-21 03:40PM Shade	207 by 27 Copy to clipboard
2023-03-21 05:10PM Shade	231 by 20 Copy to clipboard
2023-03-21 06:40PM Shade	252 by 10 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-20 08:00AM Shade	92 by 1 Copy to clipboard
2023-03-20 09:30AM Shade	112 by 12 Copy to clipboard
2023-03-20 11:00AM Shade	134 by 21 Copy to clipboard
2023-03-20 12:30PM Shade	158 by 28 Copy to clipboard
2023-03-20 02:00PM Shade	183 by 29 Copy to clipboard
2023-03-20 03:30PM Shade	209 by 26 Copy to clipboard
2023-03-20 05:00PM Shade	232 by 19 Copy to clipboard
2023-03-20 06:30PM Shade	253 by 10 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-20 07:10AM Shade	91 by 1 Copy to clipboard
2023-03-20 08:40AM Shade	111 by 12 Copy to clipboard
2023-03-20 10:10AM Shade	132 by 22 Copy to clipboard
2023-03-20 11:40AM Shade	155 by 29 Copy to clipboard
2023-03-20 01:10PM Shade	181 by 32 Copy to clipboard
2023-03-20 02:40PM Shade	207 by 29 Copy to clipboard
2023-03-20 04:10PM Shade	231 by 21 Copy to clipboard
2023-03-20 05:40PM Shade	252 by 11 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-20 07:20AM Shade	93 by 2 Copy to clipboard
2023-03-20 08:50AM Shade	113 by 13 Copy to clipboard
2023-03-20 10:20AM Shade	134 by 23 Copy to clipboard
2023-03-20 11:50AM Shade	158 by 30 Copy to clipboard
2023-03-20 01:20PM Shade	184 by 31 Copy to clipboard
2023-03-20 02:50PM Shade	210 by 28 Copy to clipboard
2023-03-20 04:20PM Shade	233 by 20 Copy to clipboard
2023-03-20 05:50PM Shade	254 by 10 Copy to clipboard

Time of day	Lighting (Az/Z)
2023-03-19 08:20AM Shade	94 by 1 Copy to clipboard
2023-03-19 09:50AM Shade	114 by 12 Copy to clipboard
2023-03-19 11:20AM Shade	135 by 20 Copy to clipboard
2023-03-19 12:50PM Shade	159 by 26 Copy to clipboard
2023-03-19 02:20PM Shade	184 by 28 Copy to clipboard
2023-03-19 03:50PM Shade	209 by 25 Copy to clipboard
2023-03-19 05:20PM Shade	232 by 18 Copy to clipboard
2023-03-19 06:50PM Shade	253 by 8 Copy to clipboard

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