Canada Avalanche Map Layers

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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: Canada zone Canada zone Canada zone Canada zone Canada zone Canada zone Canada zone Canada zone Canada zone Canada zone Canada zone Canada zone Canada zone Canada zone

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Canada zone
Avalanche Report

2024-05-08 Avalanche Danger

• Spring Conditions (9001' to 10500')
• Spring Conditions (7501' to 9000')
• Spring Conditions (below 7500')

a0-0e9001-10500f 939598
a0-0e7501-9000f 939598
a0-0e6000-7500f 939598

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Issued at: Tuesday, April 30, 2024 4:00PM
Issued by: Avalanche Canada

Canada zone
Avalanche Report

2024-05-08 Avalanche Danger

• Spring Conditions (9001' to 10500')
• Spring Conditions (7501' to 9000')
• Spring Conditions (below 7500')

a0-0e9001-10500f 939598
a0-0e7501-9000f 939598
a0-0e6000-7500f 939598

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Issued at: Sunday, April 28, 2024 4:00PM
Issued by: Avalanche Canada

Canada zone
Avalanche Report

2024-05-08 Avalanche Danger

• No forecast (9001' to 10500')
• No forecast (7501' to 9000')
• No forecast (below 7500')

a0-0e9001-10500f 939598
a0-0e7501-9000f 939598
a0-0e6000-7500f 939598

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Issued at: Sunday, March 19, 2023 6:00PM
Issued by: Avalanche Canada

Canada zone
Avalanche Report

2024-05-08 Avalanche Danger

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

a0-0e9001-10500f ed1c24
a0-0e7501-9000f ed1c24
a0-0e6000-7500f ed1c24

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2024-05-08 Wet Loose

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

a23-23e7501-9000f A200FF
a23-23e9001-10500f A200FF

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2024-05-08 Deep Persistent Slab

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

a293-293e7501-9000f 0000FF
a293-293e9001-10500f 0000FF

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Issued at: Tuesday, May 07, 2024 5:00PM
Issued by: Avalanche Canada

Canada zone
Avalanche Report

2024-05-08 Avalanche Danger

• Spring Conditions (9001' to 10500')
• Spring Conditions (7501' to 9000')
• No rating (below 7500')

a0-0e9001-10500f 939598
a0-0e7501-9000f 939598
a0-0e6000-7500f 939598

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2024-05-07 Wet Loose

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

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

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2024-05-07 Deep Persistent Slab

• All aspects (9001' to 10500')

a248-248e9001-10500f 0000FF

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Issued at: Monday, May 06, 2024 5:00PM
Issued by: Avalanche Canada

Canada zone
Avalanche Report

2024-05-08 Avalanche Danger

• Spring Conditions (9001' to 10500')
• Spring Conditions (7501' to 9000')
• Spring Conditions (below 7500')

a0-0e9001-10500f 939598
a0-0e7501-9000f 939598
a0-0e6000-7500f 939598

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Issued at: Thursday, April 25, 2024 5:00PM
Issued by: Avalanche Canada

Canada zone
Avalanche Report

2024-05-08 Avalanche Danger

• Spring Conditions (9001' to 10500')
• Spring Conditions (7501' to 9000')
• Spring Conditions (below 7500')

a0-0e9001-10500f 939598
a0-0e7501-9000f 939598
a0-0e6000-7500f 939598

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Issued at: Sunday, April 28, 2024 4:00PM
Issued by: Avalanche Canada

Canada zone
Avalanche Report

2024-05-08 Avalanche Danger

• Spring Conditions (9001' to 10500')
• Spring Conditions (7501' to 9000')
• Spring Conditions (below 7500')

a0-0e9001-10500f 939598
a0-0e7501-9000f 939598
a0-0e6000-7500f 939598

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Issued at: Sunday, April 28, 2024 4:00PM
Issued by: Avalanche Canada

Canada zone
Avalanche Report

2024-05-08 Avalanche Danger

• No forecast (9001' to 10500')
• No forecast (7501' to 9000')
• No forecast (below 7500')

a0-0e9001-10500f 939598
a0-0e7501-9000f 939598
a0-0e6000-7500f 939598

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Issued at: Sunday, March 19, 2023 6:00PM
Issued by: Avalanche Canada

Canada zone
Avalanche Report

2024-05-08 Avalanche Danger

• Spring Conditions (9001' to 10500')
• Spring Conditions (7501' to 9000')
• Spring Conditions (below 7500')

a0-0e9001-10500f 939598
a0-0e7501-9000f 939598
a0-0e6000-7500f 939598

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Issued at: Monday, April 08, 2024 5:00PM
Issued by: Avalanche Canada

Canada zone
Avalanche Report

2024-05-08 Avalanche Danger

• Spring Conditions (9001' to 10500')
• Spring Conditions (7501' to 9000')
• Spring Conditions (below 7500')

a0-0e9001-10500f 939598
a0-0e7501-9000f 939598
a0-0e6000-7500f 939598

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Issued at: Tuesday, April 09, 2024 4:00PM
Issued by: Avalanche Canada

Canada zone
Avalanche Report

2024-05-08 Avalanche Danger

• Spring Conditions (9001' to 10500')
• Spring Conditions (7501' to 9000')
• Spring Conditions (below 7500')

a0-0e9001-10500f 939598
a0-0e7501-9000f 939598
a0-0e6000-7500f 939598

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Issued at: Sunday, April 28, 2024 4:00PM
Issued by: Avalanche Canada

Canada zone
Avalanche Report

2024-05-08 Avalanche Danger

• Moderate danger (9001' to 10500')
• Spring Conditions (7501' to 9000')
• No rating (below 7500')

a0-0e9001-10500f fff200
a0-0e7501-9000f 939598
a0-0e6000-7500f 939598

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2024-05-06 Wet Loose

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

a68-68e9001-10500f A200FF
a68-68e7501-9000f A200FF

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Issued at: Sunday, May 05, 2024 3:45PM
Issued by: Avalanche Canada

Canada zone
Avalanche Report

2024-05-08 Avalanche Danger

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

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

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2024-05-08 Deep Persistent Slab

• NW to E aspects (9001' to 10500')

a293-113e9001-10500f A200FF

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2024-05-08 Wet Slab

• All aspects (7501' to 9000')
• All aspects (below 7500')
• All aspects (9001' to 10500')

a293-293e7501-9000f 0000FF
a293-293e6000-7500f 0000FF
a293-293e9001-10500f 0000FF

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2024-05-08 Cornice

• NW to SE aspects (9001' to 10500')

a293-158e9001-10500f 009AFF

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Issued at: Tuesday, May 07, 2024 4:45PM
Issued by: Avalanche Canada

Sunlight Angles

Time of day	Lighting (Az/Z)
2024-05-01 05:40AM Shade	67 by 2 Copy to clipboard
2024-05-01 07:10AM Shade	85 by 15 Copy to clipboard
2024-05-01 08:40AM Shade	103 by 29 Copy to clipboard
2024-05-01 10:10AM Shade	124 by 42 Copy to clipboard
2024-05-01 11:40AM Shade	153 by 52 Copy to clipboard
2024-05-01 01:10PM Shade	189 by 54 Copy to clipboard
2024-05-01 02:40PM Shade	223 by 48 Copy to clipboard
2024-05-01 04:10PM Shade	247 by 36 Copy to clipboard
2024-05-01 05:40PM Shade	267 by 22 Copy to clipboard
2024-05-01 07:10PM Shade	284 by 9 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2024-04-29 06:10AM Shade	69 by 2 Copy to clipboard
2024-04-29 07:40AM Shade	86 by 16 Copy to clipboard
2024-04-29 09:10AM Shade	104 by 30 Copy to clipboard
2024-04-29 10:40AM Shade	125 by 43 Copy to clipboard
2024-04-29 12:10PM Shade	155 by 53 Copy to clipboard
2024-04-29 01:40PM Shade	192 by 54 Copy to clipboard
2024-04-29 03:10PM Shade	225 by 47 Copy to clipboard
2024-04-29 04:40PM Shade	249 by 35 Copy to clipboard
2024-04-29 06:10PM Shade	268 by 21 Copy to clipboard
2024-04-29 07:40PM Shade	285 by 7 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-03-20 06:40AM Shade	92 by 1 Copy to clipboard
2023-03-20 08:10AM Shade	109 by 16 Copy to clipboard
2023-03-20 09:40AM Shade	129 by 29 Copy to clipboard
2023-03-20 11:10AM Shade	154 by 38 Copy to clipboard
2023-03-20 12:40PM Shade	183 by 41 Copy to clipboard
2023-03-20 02:10PM Shade	211 by 36 Copy to clipboard
2023-03-20 03:40PM Shade	235 by 26 Copy to clipboard
2023-03-20 05:10PM Shade	254 by 13 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2024-05-08 06:20AM Shade	64 by 1 Copy to clipboard
2024-05-08 07:50AM Shade	81 by 15 Copy to clipboard
2024-05-08 09:20AM Shade	98 by 29 Copy to clipboard
2024-05-08 10:50AM Shade	119 by 42 Copy to clipboard
2024-05-08 12:20PM Shade	147 by 52 Copy to clipboard
2024-05-08 01:50PM Shade	184 by 56 Copy to clipboard
2024-05-08 03:20PM Shade	219 by 51 Copy to clipboard
2024-05-08 04:50PM Shade	245 by 40 Copy to clipboard
2024-05-08 06:20PM Shade	265 by 26 Copy to clipboard
2024-05-08 07:50PM Shade	283 by 12 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2024-05-07 06:20AM Shade	63 by 1 Copy to clipboard
2024-05-07 07:50AM Shade	80 by 14 Copy to clipboard
2024-05-07 09:20AM Shade	98 by 28 Copy to clipboard
2024-05-07 10:50AM Shade	119 by 41 Copy to clipboard
2024-05-07 12:20PM Shade	146 by 51 Copy to clipboard
2024-05-07 01:50PM Shade	181 by 55 Copy to clipboard
2024-05-07 03:20PM Shade	216 by 50 Copy to clipboard
2024-05-07 04:50PM Shade	243 by 40 Copy to clipboard
2024-05-07 06:20PM Shade	263 by 27 Copy to clipboard
2024-05-07 07:50PM Shade	281 by 13 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2024-04-26 06:40AM Shade	71 by 2 Copy to clipboard
2024-04-26 08:10AM Shade	88 by 16 Copy to clipboard
2024-04-26 09:40AM Shade	105 by 31 Copy to clipboard
2024-04-26 11:10AM Shade	128 by 44 Copy to clipboard
2024-04-26 12:40PM Shade	158 by 53 Copy to clipboard
2024-04-26 02:10PM Shade	195 by 54 Copy to clipboard
2024-04-26 03:40PM Shade	227 by 46 Copy to clipboard
2024-04-26 05:10PM Shade	251 by 34 Copy to clipboard
2024-04-26 06:40PM Shade	269 by 19 Copy to clipboard
2024-04-26 08:10PM Shade	286 by 5 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2024-04-29 05:40AM Shade	67 by 1 Copy to clipboard
2024-04-29 07:10AM Shade	84 by 14 Copy to clipboard
2024-04-29 08:40AM Shade	102 by 28 Copy to clipboard
2024-04-29 10:10AM Shade	123 by 41 Copy to clipboard
2024-04-29 11:40AM Shade	151 by 50 Copy to clipboard
2024-04-29 01:10PM Shade	186 by 53 Copy to clipboard
2024-04-29 02:40PM Shade	219 by 47 Copy to clipboard
2024-04-29 04:10PM Shade	245 by 36 Copy to clipboard
2024-04-29 05:40PM Shade	265 by 23 Copy to clipboard
2024-04-29 07:10PM Shade	282 by 9 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2024-04-29 06:10AM Shade	65 by 1 Copy to clipboard
2024-04-29 07:40AM Shade	83 by 13 Copy to clipboard
2024-04-29 09:10AM Shade	102 by 26 Copy to clipboard
2024-04-29 10:40AM Shade	124 by 37 Copy to clipboard
2024-04-29 12:10PM Shade	150 by 46 Copy to clipboard
2024-04-29 01:40PM Shade	183 by 49 Copy to clipboard
2024-04-29 03:10PM Shade	214 by 45 Copy to clipboard
2024-04-29 04:40PM Shade	240 by 36 Copy to clipboard
2024-04-29 06:10PM Shade	261 by 24 Copy to clipboard
2024-04-29 07:40PM Shade	280 by 11 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2023-03-20 06:40AM Shade	92 by 2 Copy to clipboard
2023-03-20 08:10AM Shade	110 by 16 Copy to clipboard
2023-03-20 09:40AM Shade	130 by 29 Copy to clipboard
2023-03-20 11:10AM Shade	154 by 38 Copy to clipboard
2023-03-20 12:40PM Shade	183 by 41 Copy to clipboard
2023-03-20 02:10PM Shade	212 by 36 Copy to clipboard
2023-03-20 03:40PM Shade	235 by 26 Copy to clipboard
2023-03-20 05:10PM Shade	255 by 13 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2024-04-09 06:00AM Shade	80 by 2 Copy to clipboard
2024-04-09 07:30AM Shade	97 by 16 Copy to clipboard
2024-04-09 09:00AM Shade	116 by 31 Copy to clipboard
2024-04-09 10:30AM Shade	140 by 42 Copy to clipboard
2024-04-09 12:00PM Shade	170 by 49 Copy to clipboard
2024-04-09 01:30PM Shade	204 by 47 Copy to clipboard
2024-04-09 03:00PM Shade	231 by 38 Copy to clipboard
2024-04-09 04:30PM Shade	253 by 25 Copy to clipboard
2024-04-09 06:00PM Shade	270 by 10 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2024-04-10 06:50AM Shade	79 by 1 Copy to clipboard
2024-04-10 08:20AM Shade	96 by 16 Copy to clipboard
2024-04-10 09:50AM Shade	115 by 30 Copy to clipboard
2024-04-10 11:20AM Shade	139 by 41 Copy to clipboard
2024-04-10 12:50PM Shade	169 by 48 Copy to clipboard
2024-04-10 02:20PM Shade	202 by 47 Copy to clipboard
2024-04-10 03:50PM Shade	230 by 38 Copy to clipboard
2024-04-10 05:20PM Shade	252 by 26 Copy to clipboard
2024-04-10 06:50PM Shade	270 by 11 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2024-04-29 06:20AM Shade	61 by 1 Copy to clipboard
2024-04-29 07:50AM Shade	80 by 12 Copy to clipboard
2024-04-29 09:20AM Shade	100 by 23 Copy to clipboard
2024-04-29 10:50AM Shade	122 by 33 Copy to clipboard
2024-04-29 12:20PM Shade	147 by 41 Copy to clipboard
2024-04-29 01:50PM Shade	177 by 45 Copy to clipboard
2024-04-29 03:20PM Shade	207 by 43 Copy to clipboard
2024-04-29 04:50PM Shade	233 by 35 Copy to clipboard
2024-04-29 06:20PM Shade	256 by 25 Copy to clipboard
2024-04-29 07:50PM Shade	276 by 14 Copy to clipboard
2024-04-29 09:20PM Shade	295 by 3 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2024-05-06 06:20AM Shade	65 by 2 Copy to clipboard
2024-05-06 07:50AM Shade	82 by 15 Copy to clipboard
2024-05-06 09:20AM Shade	99 by 29 Copy to clipboard
2024-05-06 10:50AM Shade	120 by 42 Copy to clipboard
2024-05-06 12:20PM Shade	149 by 52 Copy to clipboard
2024-05-06 01:50PM Shade	185 by 55 Copy to clipboard
2024-05-06 03:20PM Shade	220 by 50 Copy to clipboard
2024-05-06 04:50PM Shade	246 by 39 Copy to clipboard
2024-05-06 06:20PM Shade	266 by 25 Copy to clipboard
2024-05-06 07:50PM Shade	283 by 11 Copy to clipboard

Sunlight Angles

Time of day	Lighting (Az/Z)
2024-05-08 06:20AM Shade	64 by 2 Copy to clipboard
2024-05-08 07:50AM Shade	81 by 15 Copy to clipboard
2024-05-08 09:20AM Shade	99 by 30 Copy to clipboard
2024-05-08 10:50AM Shade	120 by 43 Copy to clipboard
2024-05-08 12:20PM Shade	148 by 53 Copy to clipboard
2024-05-08 01:50PM Shade	186 by 56 Copy to clipboard
2024-05-08 03:20PM Shade	221 by 51 Copy to clipboard
2024-05-08 04:50PM Shade	247 by 39 Copy to clipboard
2024-05-08 06:20PM Shade	267 by 26 Copy to clipboard
2024-05-08 07:50PM Shade	284 by 11 Copy to clipboard

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

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