Colorado 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

CAIC zone
Avalanche Report

2023-12-04 Avalanche Danger
  • High danger (above 11501')
  • Considerable danger (9501' to 11500')
  • Moderate danger (below 9500')
a0-0e11501-20310f ed1c24
a0-0e9501-11500f f7941e
a0-0e0-9500f fff200
2023-12-04 Persistent Slab
  • NW to SE aspects (above 11501')
  • NW to SE aspects (9501' to 11500')
  • NW to E aspects (below 9500')
a293-158e11501-20310f A200FF
a293-158e9501-11500f A200FF
a293-113e0-9500f A200FF

Issued at: Sunday, December 03, 2023 4:30PM
Issued by: CAIC

CAIC zone
Avalanche Report

2023-12-04 Avalanche Danger
  • High danger (above 11501')
  • High danger (9501' to 11500')
  • Considerable danger (below 9500')
a0-0e11501-20310f ed1c24
a0-0e9501-11500f ed1c24
a0-0e0-9500f f7941e
2023-12-04 Persistent Slab
  • NW to E aspects (above 11501')
  • NW to E aspects (9501' to 11500')
  • NW to E aspects (below 9500')
a293-113e11501-20310f A200FF
a293-113e9501-11500f A200FF
a293-113e0-9500f A200FF
2023-12-04 Wind Slab
  • NE to SE aspects (above 11501')
  • NE to SE aspects (9501' to 11500')
a23-158e11501-20310f 0000FF
a23-158e9501-11500f 0000FF

Issued at: Sunday, December 03, 2023 4:30PM
Issued by: CAIC

CAIC zone
Avalanche Report

2023-12-04 Avalanche Danger
  • High danger (above 11501')
  • High danger (9501' to 11500')
  • Considerable danger (below 9500')
a0-0e11501-20310f ed1c24
a0-0e9501-11500f ed1c24
a0-0e0-9500f f7941e
2023-12-04 Persistent Slab
  • NW to E aspects (above 11501')
  • NW to E aspects (9501' to 11500')
a293-113e11501-20310f A200FF
a293-113e9501-11500f A200FF
2023-12-04 Storm Slab
  • All aspects (above 11501')
  • All aspects (9501' to 11500')
  • All aspects (below 9500')
a23-23e11501-20310f 0000FF
a23-23e9501-11500f 0000FF
a23-23e0-9500f 0000FF

Issued at: Sunday, December 03, 2023 4:30PM
Issued by: CAIC

CAIC zone
Avalanche Report

2023-12-04 Avalanche Danger
  • High danger (above 11501')
  • High danger (9501' to 11500')
  • Considerable danger (below 9500')
a0-0e11501-20310f ed1c24
a0-0e9501-11500f ed1c24
a0-0e0-9500f f7941e
2023-12-04 Persistent Slab
  • NW to E aspects (above 11501')
  • NW to E aspects (9501' to 11500')
  • NW to E aspects (below 9500')
a293-113e11501-20310f A200FF
a293-113e9501-11500f A200FF
a293-113e0-9500f A200FF
2023-12-04 Storm Slab
  • All aspects (above 11501')
  • All aspects (9501' to 11500')
  • All aspects (below 9500')
a68-68e11501-20310f 0000FF
a68-68e9501-11500f 0000FF
a68-68e0-9500f 0000FF

Issued at: Sunday, December 03, 2023 4:30PM
Issued by: CAIC

CAIC zone
Avalanche Report

2023-12-04 Avalanche Danger
  • Moderate danger (above 11501')
  • Low danger (9501' to 11500')
  • Low danger (below 9500')
a0-0e11501-20310f fff200
a0-0e9501-11500f 50b848
a0-0e0-9500f 50b848
2023-12-04 Persistent Slab
  • NW to E aspects (above 11501')
a293-113e11501-20310f A200FF

Issued at: Sunday, December 03, 2023 4:30PM
Issued by: CAIC

CAIC zone
Avalanche Report

2023-12-04 Avalanche Danger
  • Moderate danger (above 11501')
  • Moderate danger (9501' to 11500')
  • Low danger (below 9500')
a0-0e11501-20310f fff200
a0-0e9501-11500f fff200
a0-0e0-9500f 50b848
2023-12-04 Persistent Slab
  • NW to E aspects (above 11501')
  • NW to E aspects (9501' to 11500')
a293-113e11501-20310f A200FF
a293-113e9501-11500f A200FF

Issued at: Sunday, December 03, 2023 4:30PM
Issued by: CAIC

CAIC zone
Avalanche Report

2023-12-04 Avalanche Danger
  • Considerable danger (above 11501')
  • Considerable danger (9501' to 11500')
  • Moderate danger (below 9500')
a0-0e11501-20310f f7941e
a0-0e9501-11500f f7941e
a0-0e0-9500f fff200
2023-12-04 Persistent Slab
  • NW to E aspects (above 11501')
  • NW to E aspects (9501' to 11500')
  • NW to E aspects (below 9500')
a293-113e11501-20310f A200FF
a293-113e9501-11500f A200FF
a293-113e0-9500f A200FF
2023-12-04 Wind Slab
  • NE to S aspects (above 11501')
  • NE to S aspects (9501' to 11500')
a23-203e11501-20310f 0000FF
a23-203e9501-11500f 0000FF

Issued at: Sunday, December 03, 2023 4:30PM
Issued by: CAIC

CAIC zone
Avalanche Report

2023-12-04 Avalanche Danger
  • Considerable danger (above 11501')
  • Considerable danger (9501' to 11500')
  • Considerable danger (below 9500')
a0-0e11501-20310f f7941e
a0-0e9501-11500f f7941e
a0-0e0-9500f f7941e
2023-12-04 Persistent Slab
  • NW to E aspects (above 11501')
  • NW to E aspects (9501' to 11500')
a293-113e11501-20310f A200FF
a293-113e9501-11500f A200FF
2023-12-04 Storm Slab
  • All aspects (above 11501')
  • All aspects (9501' to 11500')
  • All aspects (below 9500')
a113-113e11501-20310f 0000FF
a203-203e9501-11500f 0000FF
a113-113e0-9500f 0000FF

Issued at: Sunday, December 03, 2023 4:30PM
Issued by: CAIC

CAIC zone
Avalanche Report

2023-12-04 Avalanche Danger
  • Considerable danger (above 11501')
  • Considerable danger (9501' to 11500')
  • Moderate danger (below 9500')
a0-0e11501-20310f f7941e
a0-0e9501-11500f f7941e
a0-0e0-9500f fff200
2023-12-04 Persistent Slab
  • NW to E aspects (above 11501')
  • NW to E aspects (9501' to 11500')
  • NW to E aspects (below 9500')
a293-113e11501-20310f A200FF
a293-113e9501-11500f A200FF
a293-113e0-9500f A200FF

Issued at: Sunday, December 03, 2023 4:30PM
Issued by: CAIC

CAIC zone
Avalanche Report

2023-12-04 Avalanche Danger
  • Considerable danger (above 11501')
  • Considerable danger (9501' to 11500')
  • Low danger (below 9500')
a0-0e11501-20310f f7941e
a0-0e9501-11500f f7941e
a0-0e0-9500f 50b848
2023-12-04 Persistent Slab
  • NW to E aspects (above 11501')
  • NW to E aspects (9501' to 11500')
a293-113e11501-20310f A200FF
a293-113e9501-11500f A200FF

Issued at: Sunday, December 03, 2023 4:30PM
Issued by: CAIC

CAIC zone
Avalanche Report

2023-12-04 Avalanche Danger
  • Considerable danger (above 11501')
  • Considerable danger (9501' to 11500')
  • Moderate danger (below 9500')
a0-0e11501-20310f f7941e
a0-0e9501-11500f f7941e
a0-0e0-9500f fff200
2023-12-04 Persistent Slab
  • NW to E aspects (above 11501')
  • NW to E aspects (9501' to 11500')
  • NW to E aspects (below 9500')
a293-113e11501-20310f A200FF
a293-113e9501-11500f A200FF
a293-113e0-9500f A200FF

Issued at: Sunday, December 03, 2023 4:30PM
Issued by: CAIC


Sunlight Angles

Time of day Lighting (Az/Z)
2023-12-04 07:20AM Shade 120 by 1
2023-12-04 08:50AM Shade 136 by 15
2023-12-04 10:20AM Shade 156 by 24
2023-12-04 11:50AM Shade 178 by 28
2023-12-04 01:20PM Shade 202 by 25
2023-12-04 02:50PM Shade 222 by 16
2023-12-04 04:20PM Shade 238 by 3


Sunlight Angles

Time of day Lighting (Az/Z)
2023-12-04 07:20AM Shade 120 by 1
2023-12-04 08:50AM Shade 136 by 15
2023-12-04 10:20AM Shade 155 by 25
2023-12-04 11:50AM Shade 178 by 29
2023-12-04 01:20PM Shade 201 by 26
2023-12-04 02:50PM Shade 221 by 17
2023-12-04 04:20PM Shade 238 by 3


Sunlight Angles

Time of day Lighting (Az/Z)
2023-12-04 07:30AM Shade 122 by 2
2023-12-04 09:00AM Shade 138 by 15
2023-12-04 10:30AM Shade 158 by 24
2023-12-04 12:00PM Shade 181 by 27
2023-12-04 01:30PM Shade 203 by 23
2023-12-04 03:00PM Shade 223 by 14
2023-12-04 04:30PM Shade 239 by 1


Sunlight Angles

Time of day Lighting (Az/Z)
2023-12-04 07:20AM Shade 120 by 1
2023-12-04 08:50AM Shade 135 by 14
2023-12-04 10:20AM Shade 155 by 25
2023-12-04 11:50AM Shade 178 by 29
2023-12-04 01:20PM Shade 201 by 26
2023-12-04 02:50PM Shade 221 by 17
2023-12-04 04:20PM Shade 237 by 4


Sunlight Angles

Time of day Lighting (Az/Z)
2023-12-04 07:10AM Shade 119 by 1
2023-12-04 08:40AM Shade 135 by 15
2023-12-04 10:10AM Shade 154 by 25
2023-12-04 11:40AM Shade 177 by 30
2023-12-04 01:10PM Shade 200 by 27
2023-12-04 02:40PM Shade 221 by 18
2023-12-04 04:10PM Shade 237 by 5


Sunlight Angles

Time of day Lighting (Az/Z)
2023-12-04 07:20AM Shade 120 by 1
2023-12-04 08:50AM Shade 136 by 15
2023-12-04 10:20AM Shade 156 by 25
2023-12-04 11:50AM Shade 179 by 29
2023-12-04 01:20PM Shade 202 by 25
2023-12-04 02:50PM Shade 222 by 16
2023-12-04 04:20PM Shade 238 by 3


Sunlight Angles

Time of day Lighting (Az/Z)
2023-12-04 07:20AM Shade 121 by 1
2023-12-04 08:50AM Shade 137 by 14
2023-12-04 10:20AM Shade 156 by 24
2023-12-04 11:50AM Shade 179 by 27
2023-12-04 01:20PM Shade 202 by 24
2023-12-04 02:50PM Shade 222 by 15
2023-12-04 04:20PM Shade 238 by 2


Sunlight Angles

Time of day Lighting (Az/Z)
2023-12-04 07:30AM Shade 121 by 2
2023-12-04 09:00AM Shade 137 by 15
2023-12-04 10:30AM Shade 157 by 24
2023-12-04 12:00PM Shade 180 by 28
2023-12-04 01:30PM Shade 203 by 24
2023-12-04 03:00PM Shade 223 by 15
2023-12-04 04:30PM Shade 239 by 2


Sunlight Angles

Time of day Lighting (Az/Z)
2023-12-04 07:20AM Shade 120 by 1
2023-12-04 08:50AM Shade 136 by 15
2023-12-04 10:20AM Shade 155 by 25
2023-12-04 11:50AM Shade 178 by 29
2023-12-04 01:20PM Shade 201 by 26
2023-12-04 02:50PM Shade 221 by 17
2023-12-04 04:20PM Shade 238 by 3


Sunlight Angles

Time of day Lighting (Az/Z)
2023-12-04 07:20AM Shade 120 by 1
2023-12-04 08:50AM Shade 135 by 16
2023-12-04 10:20AM Shade 154 by 26
2023-12-04 11:50AM Shade 178 by 30
2023-12-04 01:20PM Shade 201 by 27
2023-12-04 02:50PM Shade 221 by 18
2023-12-04 04:20PM Shade 237 by 4


Sunlight Angles

Time of day Lighting (Az/Z)
2023-12-04 07:20AM Shade 119 by 1
2023-12-04 08:50AM Shade 135 by 15
2023-12-04 10:20AM Shade 154 by 25
2023-12-04 11:50AM Shade 177 by 30
2023-12-04 01:20PM Shade 200 by 27
2023-12-04 02:50PM Shade 221 by 18
2023-12-04 04:20PM Shade 237 by 4

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