Idaho Avalanche Map


"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

Select A Zone:

Selkirks & Cabinets

Pre-populated CalTopo Map

St. Regis & Silver Valley

Pre-populated CalTopo Map

PAC Advisory Area

Pre-populated CalTopo Map

Galena Summit & Eastern Mtns

Pre-populated CalTopo Map

Sawtooth & Western Smoky Mtns

Pre-populated CalTopo Map

Soldier & Wood River Valley Mtns

Pre-populated CalTopo Map

Avalanche Report

Report not available. See IPAC for more information.

Issued at: Sunday, March 19, 2023 6:46AM
Issued by: IPAC

Report not available. See IPAC for more information.

Issued at: Sunday, March 19, 2023 6:30AM
Issued by: IPAC

Report not available. See PAC for more information.

Issued at: Sunday, March 19, 2023 5:00AM
Issued by: PAC

2023-03-21 Avalanche Danger
  • Considerable danger (above 9501')
  • Considerable danger (7501' to 9500')
  • Moderate danger (below 7500')
a0-0e9501-20310f f7941e
a0-0e7501-9500f f7941e
a0-0e0-7500f fff200
2023-03-21 Persistent Slab
  • All aspects (above 9501')
  • All aspects (7501' to 9500')
a68-68e9501-20310f A200FF
a158-158e7501-9500f A200FF

Issued at: Monday, March 20, 2023 6:11AM
Issued by: SNFAC

2023-03-21 Avalanche Danger
  • Moderate danger (above 8501')
  • Moderate danger (6501' to 8500')
  • Moderate danger (below 6500')
a0-0e8501-20310f fff200
a0-0e6501-8500f fff200
a0-0e0-6500f fff200
2023-03-21 Persistent Slab
  • All aspects (above 8501')
  • All aspects (6501' to 8500')
a158-158e8501-20310f A200FF
a339-339e6501-8500f A200FF

Issued at: Monday, March 20, 2023 6:12AM
Issued by: SNFAC

Report not available. See SNFAC for more information.

Issued at: Monday, March 20, 2023 6:10AM
Issued by: SNFAC

Sunlight Angles

Time of day Lighting (Az/Z)
2023-03-20 07:00AM Shade 92 by 1
2023-03-20 08:30AM Shade 109 by 16
2023-03-20 10:00AM Shade 129 by 29
2023-03-20 11:30AM Shade 153 by 38
2023-03-20 01:00PM Shade 183 by 42
2023-03-20 02:30PM Shade 211 by 37
2023-03-20 04:00PM Shade 235 by 27
2023-03-20 05:30PM Shade 254 by 13
Time of day Lighting (Az/Z)
2023-03-20 07:00AM Shade 92 by 1
2023-03-20 08:30AM Shade 109 by 16
2023-03-20 10:00AM Shade 129 by 30
2023-03-20 11:30AM Shade 153 by 39
2023-03-20 01:00PM Shade 183 by 42
2023-03-20 02:30PM Shade 212 by 38
2023-03-20 04:00PM Shade 236 by 27
2023-03-20 05:30PM Shade 255 by 14
Time of day Lighting (Az/Z)
2023-03-20 08:00AM Shade 91 by 1
2023-03-20 09:30AM Shade 108 by 17
2023-03-20 11:00AM Shade 127 by 31
2023-03-20 12:30PM Shade 152 by 42
2023-03-20 02:00PM Shade 183 by 45
2023-03-20 03:30PM Shade 213 by 40
2023-03-20 05:00PM Shade 237 by 29
2023-03-20 06:30PM Shade 255 by 14
Time of day Lighting (Az/Z)
2023-03-21 07:50AM Shade 91 by 1
2023-03-21 09:20AM Shade 107 by 17
2023-03-21 10:50AM Shade 126 by 32
2023-03-21 12:20PM Shade 150 by 42
2023-03-21 01:50PM Shade 182 by 46
2023-03-21 03:20PM Shade 213 by 42
2023-03-21 04:50PM Shade 237 by 30
2023-03-21 06:20PM Shade 255 by 15
Time of day Lighting (Az/Z)
2023-03-21 07:50AM Shade 90 by 1
2023-03-21 09:20AM Shade 106 by 17
2023-03-21 10:50AM Shade 125 by 31
2023-03-21 12:20PM Shade 150 by 42
2023-03-21 01:50PM Shade 181 by 46
2023-03-21 03:20PM Shade 212 by 42
2023-03-21 04:50PM Shade 236 by 30
2023-03-21 06:20PM Shade 255 by 16
Time of day Lighting (Az/Z)
2023-03-21 07:50AM Shade 91 by 1
2023-03-21 09:20AM Shade 107 by 17
2023-03-21 10:50AM Shade 125 by 32
2023-03-21 12:20PM Shade 150 by 43
2023-03-21 01:50PM Shade 182 by 47
2023-03-21 03:20PM Shade 213 by 42
2023-03-21 04:50PM Shade 237 by 30
2023-03-21 06:20PM Shade 255 by 16

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