Alaska Avalanche Map Layers

---

"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.

---

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.

---

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

Copy to clipboard

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: Wednesday, May 03, 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 22, 2023 7:01AM
Issued by: HPAC

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-05-04 05:50AM Shade	59 by 1 Copy to clipboard
2023-05-04 07:20AM Shade	78 by 12 Copy to clipboard
2023-05-04 08:50AM Shade	98 by 23 Copy to clipboard
2023-05-04 10:20AM Shade	119 by 33 Copy to clipboard
2023-05-04 11:50AM Shade	144 by 41 Copy to clipboard
2023-05-04 01:20PM Shade	174 by 45 Copy to clipboard
2023-05-04 02:50PM Shade	204 by 44 Copy to clipboard
2023-05-04 04:20PM Shade	231 by 37 Copy to clipboard
2023-05-04 05:50PM Shade	254 by 27 Copy to clipboard
2023-05-04 07:20PM Shade	274 by 16 Copy to clipboard
2023-05-04 08:50PM Shade	293 by 6 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-05-04 05:30AM Shade	54 by 1 Copy to clipboard
2023-05-04 07:00AM Shade	74 by 10 Copy to clipboard
2023-05-04 08:30AM Shade	94 by 20 Copy to clipboard
2023-05-04 10:00AM Shade	115 by 30 Copy to clipboard
2023-05-04 11:30AM Shade	140 by 38 Copy to clipboard
2023-05-04 01:00PM Shade	167 by 42 Copy to clipboard
2023-05-04 02:30PM Shade	197 by 42 Copy to clipboard
2023-05-04 04:00PM Shade	224 by 37 Copy to clipboard
2023-05-04 05:30PM Shade	248 by 29 Copy to clipboard
2023-05-04 07:00PM Shade	269 by 19 Copy to clipboard
2023-05-04 08:30PM Shade	289 by 9 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-05-04 06:20AM Shade	60 by 2 Copy to clipboard
2023-05-04 07:50AM Shade	79 by 12 Copy to clipboard
2023-05-04 09:20AM Shade	98 by 23 Copy to clipboard
2023-05-04 10:50AM Shade	120 by 34 Copy to clipboard
2023-05-04 12:20PM Shade	146 by 43 Copy to clipboard
2023-05-04 01:50PM Shade	175 by 46 Copy to clipboard
2023-05-04 03:20PM Shade	206 by 44 Copy to clipboard
2023-05-04 04:50PM Shade	233 by 37 Copy to clipboard
2023-05-04 06:20PM Shade	256 by 27 Copy to clipboard
2023-05-04 07:50PM Shade	276 by 16 Copy to clipboard
2023-05-04 09:20PM Shade	295 by 5 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-05-04 05:10AM Shade	59 by 1 Copy to clipboard
2023-05-04 06:40AM Shade	78 by 11 Copy to clipboard
2023-05-04 08:10AM Shade	97 by 23 Copy to clipboard
2023-05-04 09:40AM Shade	118 by 34 Copy to clipboard
2023-05-04 11:10AM Shade	143 by 42 Copy to clipboard
2023-05-04 12:40PM Shade	173 by 47 Copy to clipboard
2023-05-04 02:10PM Shade	204 by 45 Copy to clipboard
2023-05-04 03:40PM Shade	232 by 38 Copy to clipboard
2023-05-04 05:10PM Shade	255 by 28 Copy to clipboard
2023-05-04 06:40PM Shade	274 by 16 Copy to clipboard
2023-05-04 08:10PM Shade	293 by 5 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-05-04 05:20AM Shade	60 by 2 Copy to clipboard
2023-05-04 06:50AM Shade	79 by 12 Copy to clipboard
2023-05-04 08:20AM Shade	99 by 24 Copy to clipboard
2023-05-04 09:50AM Shade	120 by 34 Copy to clipboard
2023-05-04 11:20AM Shade	146 by 43 Copy to clipboard
2023-05-04 12:50PM Shade	176 by 47 Copy to clipboard
2023-05-04 02:20PM Shade	207 by 44 Copy to clipboard
2023-05-04 03:50PM Shade	234 by 37 Copy to clipboard
2023-05-04 05:20PM Shade	256 by 27 Copy to clipboard
2023-05-04 06:50PM Shade	276 by 15 Copy to clipboard
2023-05-04 08:20PM Shade	295 by 4 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-05-04 05:40AM Shade	57 by 1 Copy to clipboard
2023-05-04 07:10AM Shade	76 by 11 Copy to clipboard
2023-05-04 08:40AM Shade	96 by 21 Copy to clipboard
2023-05-04 10:10AM Shade	117 by 32 Copy to clipboard
2023-05-04 11:40AM Shade	142 by 40 Copy to clipboard
2023-05-04 01:10PM Shade	170 by 45 Copy to clipboard
2023-05-04 02:40PM Shade	201 by 44 Copy to clipboard
2023-05-04 04:10PM Shade	228 by 37 Copy to clipboard
2023-05-04 05:40PM Shade	251 by 28 Copy to clipboard
2023-05-04 07:10PM Shade	272 by 18 Copy to clipboard
2023-05-04 08:40PM Shade	291 by 7 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-05-04 05:40AM Shade	56 by 1 Copy to clipboard
2023-05-04 07:10AM Shade	76 by 10 Copy to clipboard
2023-05-04 08:40AM Shade	95 by 21 Copy to clipboard
2023-05-04 10:10AM Shade	117 by 32 Copy to clipboard
2023-05-04 11:40AM Shade	141 by 40 Copy to clipboard
2023-05-04 01:10PM Shade	170 by 45 Copy to clipboard
2023-05-04 02:40PM Shade	200 by 44 Copy to clipboard
2023-05-04 04:10PM Shade	228 by 38 Copy to clipboard
2023-05-04 05:40PM Shade	251 by 28 Copy to clipboard
2023-05-04 07:10PM Shade	272 by 18 Copy to clipboard
2023-05-04 08:40PM Shade	291 by 7 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-05-04 05:50AM Shade	58 by 1 Copy to clipboard
2023-05-04 07:20AM Shade	78 by 11 Copy to clipboard
2023-05-04 08:50AM Shade	97 by 22 Copy to clipboard
2023-05-04 10:20AM Shade	119 by 33 Copy to clipboard
2023-05-04 11:50AM Shade	144 by 41 Copy to clipboard
2023-05-04 01:20PM Shade	173 by 45 Copy to clipboard
2023-05-04 02:50PM Shade	203 by 43 Copy to clipboard
2023-05-04 04:20PM Shade	230 by 37 Copy to clipboard
2023-05-04 05:50PM Shade	253 by 27 Copy to clipboard
2023-05-04 07:20PM Shade	273 by 17 Copy to clipboard
2023-05-04 08:50PM Shade	293 by 6 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-05-04 06:00AM Shade	57 by 1 Copy to clipboard
2023-05-04 07:30AM Shade	77 by 11 Copy to clipboard
2023-05-04 09:00AM Shade	96 by 22 Copy to clipboard
2023-05-04 10:30AM Shade	118 by 32 Copy to clipboard
2023-05-04 12:00PM Shade	143 by 40 Copy to clipboard
2023-05-04 01:30PM Shade	172 by 45 Copy to clipboard
2023-05-04 03:00PM Shade	202 by 43 Copy to clipboard
2023-05-04 04:30PM Shade	229 by 37 Copy to clipboard
2023-05-04 06:00PM Shade	252 by 28 Copy to clipboard
2023-05-04 07:30PM Shade	273 by 17 Copy to clipboard
2023-05-04 09:00PM Shade	292 by 7 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-05-04 06:00AM Shade	57 by 1 Copy to clipboard
2023-05-04 07:30AM Shade	77 by 11 Copy to clipboard
2023-05-04 09:00AM Shade	96 by 22 Copy to clipboard
2023-05-04 10:30AM Shade	117 by 33 Copy to clipboard
2023-05-04 12:00PM Shade	142 by 41 Copy to clipboard
2023-05-04 01:30PM Shade	171 by 46 Copy to clipboard
2023-05-04 03:00PM Shade	202 by 44 Copy to clipboard
2023-05-04 04:30PM Shade	230 by 38 Copy to clipboard
2023-05-04 06:00PM Shade	253 by 28 Copy to clipboard
2023-05-04 07:30PM Shade	273 by 17 Copy to clipboard
2023-05-04 09:00PM Shade	292 by 6 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-05-04 06:00AM Shade	58 by 1 Copy to clipboard
2023-05-04 07:30AM Shade	77 by 11 Copy to clipboard
2023-05-04 09:00AM Shade	96 by 22 Copy to clipboard
2023-05-04 10:30AM Shade	117 by 32 Copy to clipboard
2023-05-04 12:00PM Shade	142 by 41 Copy to clipboard
2023-05-04 01:30PM Shade	172 by 45 Copy to clipboard
2023-05-04 03:00PM Shade	202 by 44 Copy to clipboard
2023-05-04 04:30PM Shade	229 by 38 Copy to clipboard
2023-05-04 06:00PM Shade	253 by 28 Copy to clipboard
2023-05-04 07:30PM Shade	273 by 17 Copy to clipboard
2023-05-04 09:00PM Shade	292 by 6 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-05-04 06:00AM Shade	58 by 1 Copy to clipboard
2023-05-04 07:30AM Shade	77 by 11 Copy to clipboard
2023-05-04 09:00AM Shade	97 by 22 Copy to clipboard
2023-05-04 10:30AM Shade	118 by 33 Copy to clipboard
2023-05-04 12:00PM Shade	143 by 41 Copy to clipboard
2023-05-04 01:30PM Shade	172 by 45 Copy to clipboard
2023-05-04 03:00PM Shade	202 by 44 Copy to clipboard
2023-05-04 04:30PM Shade	230 by 37 Copy to clipboard
2023-05-04 06:00PM Shade	253 by 28 Copy to clipboard
2023-05-04 07:30PM Shade	273 by 17 Copy to clipboard
2023-05-04 09:00PM Shade	292 by 6 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-05-04 05:50AM Shade	59 by 1 Copy to clipboard
2023-05-04 07:20AM Shade	78 by 12 Copy to clipboard
2023-05-04 08:50AM Shade	98 by 23 Copy to clipboard
2023-05-04 10:20AM Shade	119 by 33 Copy to clipboard
2023-05-04 11:50AM Shade	144 by 41 Copy to clipboard
2023-05-04 01:20PM Shade	174 by 45 Copy to clipboard
2023-05-04 02:50PM Shade	204 by 44 Copy to clipboard
2023-05-04 04:20PM Shade	231 by 37 Copy to clipboard
2023-05-04 05:50PM Shade	254 by 27 Copy to clipboard
2023-05-04 07:20PM Shade	274 by 16 Copy to clipboard
2023-05-04 08:50PM Shade	293 by 6 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-05-04 05:10AM Shade	60 by 1 Copy to clipboard
2023-05-04 06:40AM Shade	78 by 12 Copy to clipboard
2023-05-04 08:10AM Shade	97 by 23 Copy to clipboard
2023-05-04 09:40AM Shade	119 by 35 Copy to clipboard
2023-05-04 11:10AM Shade	144 by 44 Copy to clipboard
2023-05-04 12:40PM Shade	175 by 48 Copy to clipboard
2023-05-04 02:10PM Shade	206 by 46 Copy to clipboard
2023-05-04 03:40PM Shade	234 by 38 Copy to clipboard
2023-05-04 05:10PM Shade	256 by 27 Copy to clipboard
2023-05-04 06:40PM Shade	276 by 16 Copy to clipboard
2023-05-04 08:10PM Shade	294 by 4 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-05-04 05:10AM Shade	60 by 1 Copy to clipboard
2023-05-04 06:40AM Shade	78 by 12 Copy to clipboard
2023-05-04 08:10AM Shade	97 by 23 Copy to clipboard
2023-05-04 09:40AM Shade	119 by 35 Copy to clipboard
2023-05-04 11:10AM Shade	144 by 43 Copy to clipboard
2023-05-04 12:40PM Shade	175 by 48 Copy to clipboard
2023-05-04 02:10PM Shade	206 by 45 Copy to clipboard
2023-05-04 03:40PM Shade	233 by 38 Copy to clipboard
2023-05-04 05:10PM Shade	256 by 27 Copy to clipboard
2023-05-04 06:40PM Shade	275 by 16 Copy to clipboard
2023-05-04 08:10PM Shade	294 by 4 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-04-23 06:30AM Shade	65 by 1 Copy to clipboard
2023-04-23 08:00AM Shade	85 by 12 Copy to clipboard
2023-04-23 09:30AM Shade	105 by 22 Copy to clipboard
2023-04-23 11:00AM Shade	127 by 32 Copy to clipboard
2023-04-23 12:30PM Shade	153 by 39 Copy to clipboard
2023-04-23 02:00PM Shade	182 by 41 Copy to clipboard
2023-04-23 03:30PM Shade	210 by 38 Copy to clipboard
2023-04-23 05:00PM Shade	235 by 31 Copy to clipboard
2023-04-23 06:30PM Shade	257 by 21 Copy to clipboard
2023-04-23 08:00PM Shade	277 by 11 Copy to clipboard
2023-04-23 09:30PM Shade	297 by 1 Copy to clipboard

---

Change Regions: Alaska California Wyoming Oregon Montana Idaho Arizona New Hampshire Washington New Mexico Utah

If you enjoyed this or found it helpful, please consider buying an espresso to keep the flow going.

Show Known Issues