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.

Zones by Region

Alaska

• 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

California

• Bridgeport Winter Recreation Area
• Eastside Region
• Mount Shasta
• Central Sierra Nevada

Wyoming

• Greys River
• Tetons
• Togwotee Pass
• Big Horns
• Sierra Madre
• Snowy Range

Oregon

• Central Cascades
• Newberry
• Mt Hood
• Blues
• Elkhorns
• Northern Wallowas
• Southern Wallowas

Montana

• Flathead Range & Glacier NP
• Swan Range
• Whitefish Range
• Bridger Range
• Cooke City
• Island Park
• Lionhead Area
• Northern Gallatin Range
• Northern Madison Range
• Southern Gallatin Range
• Southern Madison Range
• Kootenai
• Bitterroot
• Rattlesnake
• Seeley Lake

Idaho

• Selkirks & Cabinets
• St. Regis & Silver Valley
• PAC Advisory Area
• Banner Summit
• Galena Summit & Eastern Mtns
• Sawtooth & Western Smoky Mtns
• Soldier & Wood River Valley Mtns

Arizona

• San Francisco Peaks / Kachina Peaks Wilderness

New Hampshire

• Presidential Range

Washington

• East Slopes Central
• East Slopes North
• East Slopes South
• Olympics
• Snoqualmie Pass
• Stevens Pass
• West Slopes Central
• West Slopes North
• West Slopes South

New Mexico

• Northern New Mexico

Utah

• Abajos
• Logan
• Moab
• Ogden
• Provo
• Salt Lake
• Skyline
• Southwest
• Uintas

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