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.

Select A Region: Alaska Arizona California Colorado Idaho Montana New Hampshire New Mexico Oregon Utah Washington Wyoming Canada

Alaska

• Chugach State Park
• Seward and Lost Lake
• Summit Lake Friday, December 20, 2024 7:00AM
• Turnagain Pass Friday, December 20, 2024 7:00AM
• Juneau
• Cordova
• Eastern Alaska Range
• Chilkat Pass
• Lutak
• Transitional
• Hatcher Pass Thursday, December 19, 2024 7:00AM
• Continental Friday, December 20, 2024 6:24AM
• Intermountain Friday, December 20, 2024 6:24AM
• Maritime Friday, December 20, 2024 6:26AM

Arizona

• San Francisco Peaks / Kachina Peaks Wilderness

California

• Bridgeport Avalanche Center Friday, December 20, 2024 7:00AM
• Eastside Region Friday, December 20, 2024 7:00AM
• Mount Shasta Friday, December 20, 2024 6:34AM
• Central Sierra Nevada Friday, December 20, 2024 6:30AM

Colorado

• CAIC zone Friday, December 20, 2024 4:30PM
• CAIC zone Friday, December 20, 2024 4:30PM
• CAIC zone Friday, December 20, 2024 4:30PM
• CAIC zone Friday, December 20, 2024 4:30PM
• CAIC zone Friday, December 20, 2024 4:30PM
• CAIC zone Friday, December 20, 2024 4:30PM
• CAIC zone Friday, December 20, 2024 4:30PM
• CAIC zone Friday, December 20, 2024 4:30PM
• CAIC zone Friday, December 20, 2024 4:30PM
• CAIC zone Friday, December 20, 2024 4:30PM
• CAIC zone Friday, December 20, 2024 4:30PM
• CAIC zone Friday, December 20, 2024 4:30PM

Idaho

• Big Holes
• Selkirk Mountains
• Silver Valley & Bitterroot Mountains
• West Cabinet Mountains
• PAC Advisory Area
• Banner Summit
• Galena Summit & Eastern Mtns
• Sawtooth & Western Smoky Mtns
• Soldier & Wood River Valley Mtns

Montana

• Flathead Range & Glacier NP Friday, December 20, 2024 7:05AM
• Swan Range Friday, December 20, 2024 7:05AM
• Whitefish Range Friday, December 20, 2024 7:05AM
• Bridger Range
• Cooke City
• Island Park
• Lionhead Area
• Northern Gallatin Range
• Northern Madison Range
• Southern Gallatin Range
• Southern Madison Range
• East Cabinet Mountains
• Purcell Mountains
• Bitterroot
• Rattlesnake
• Seeley Lake

New Hampshire

• Presidential Range

New Mexico

• Northern New Mexico

Oregon

• Central Cascades Thursday, December 19, 2024 9:05PM
• Newberry
• Mt Hood Friday, December 20, 2024 6:11PM
• Southern Oregon
• Blues Friday, December 20, 2024 7:00AM
• Elkhorns Friday, December 20, 2024 7:04AM
• Northern Wallowas Friday, December 20, 2024 7:00AM
• Southern Wallowas Friday, December 20, 2024 7:00AM

Utah

• Abajos
• Logan Friday, December 20, 2024 5:34AM
• Moab Friday, December 20, 2024 6:24AM
• Ogden Friday, December 20, 2024 6:39AM
• Provo Friday, December 20, 2024 6:34AM
• Salt Lake Friday, December 20, 2024 4:53AM
• Skyline Friday, December 20, 2024 6:28AM
• Southwest
• Uintas Friday, December 20, 2024 1:48AM

Washington

• East Slopes Central Friday, December 20, 2024 6:00PM
• East Slopes North Friday, December 20, 2024 6:22PM
• East Slopes South Friday, December 20, 2024 6:00PM
• Olympics Friday, December 20, 2024 6:00PM
• Snoqualmie Pass Friday, December 20, 2024 6:00PM
• Stevens Pass Friday, December 20, 2024 6:00PM
• West Slopes Central Friday, December 20, 2024 6:00PM
• West Slopes North Friday, December 20, 2024 6:00PM
• West Slopes South Friday, December 20, 2024 6:00PM

Wyoming

• Gros Ventre
• Salt River and Wyoming Ranges
• Snake River Range
• Southern Wyoming Range
• Tetons
• Togwotee Pass
• Big Horns
• Sierra Madre
• Snowy Range

Canada

• Canada zone
• Canada zone Friday, December 20, 2024 5:00PM
• Canada zone Friday, December 20, 2024 4:00PM
• Canada zone Friday, December 20, 2024 4:00PM
• Canada zone Friday, December 20, 2024 4:00PM
• Canada zone Friday, December 20, 2024 4:00PM
• Canada zone
• Canada zone Friday, December 20, 2024 5:00PM
• Canada zone Friday, December 20, 2024 5:00PM
• Canada zone
• Canada zone Friday, December 20, 2024 5:00PM
• Canada zone Friday, December 20, 2024 5:00PM
• Canada zone Friday, December 20, 2024 4:00PM
• Canada zone Thursday, December 19, 2024 2:00PM
• Canada zone Friday, December 20, 2024 4:00PM
• Canada zone Friday, December 20, 2024 4:00PM
• Canada zone Friday, December 20, 2024 5:00PM
• Canada zone Friday, December 20, 2024 4:00PM
• Canada zone
• Canada zone Friday, December 20, 2024 4:00PM
• Canada zone Friday, December 20, 2024 4:00PM
• Canada zone Friday, December 20, 2024 5:00PM
• Canada zone Friday, December 20, 2024 4:00PM
• Canada zone Friday, December 20, 2024 5:00PM
• Canada zone Friday, December 20, 2024 4:00PM
• Canada zone

Zones

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