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 Monday, January 20, 2025 7:00AM
• Summit Lake Monday, January 20, 2025 7:00AM
• Turnagain Pass Monday, January 20, 2025 7:00AM
• Douglas Island
• Juneau
• Cordova
• Eastern Alaska Range
• Chilkat Pass
• Lutak
• Transitional
• Hatcher Pass Sunday, January 19, 2025 7:00AM
• Continental Sunday, January 19, 2025 7:38AM
• Intermountain Sunday, January 19, 2025 7:38AM
• Maritime Sunday, January 19, 2025 7:40AM

Arizona

• San Francisco Peaks / Kachina Peaks Wilderness

California

• Bridgeport Avalanche Center
• Eastside Region Monday, January 20, 2025 7:00AM
• Mount Shasta Monday, January 20, 2025 6:30AM
• Central Sierra Nevada Monday, January 20, 2025 6:45AM

Colorado

• CAIC zone Monday, January 20, 2025 4:30PM
• CAIC zone Monday, January 20, 2025 4:30PM
• CAIC zone Monday, January 20, 2025 4:30PM
• CAIC zone Monday, January 20, 2025 4:30PM
• CAIC zone Monday, January 20, 2025 4:30PM
• CAIC zone Monday, January 20, 2025 4:30PM
• CAIC zone Monday, January 20, 2025 4:30PM
• CAIC zone Monday, January 20, 2025 4:30PM
• CAIC zone Monday, January 20, 2025 4:30PM
• CAIC zone Monday, January 20, 2025 4:30PM
• CAIC zone Monday, January 20, 2025 4:30PM

Idaho

• Big Holes
• Selkirk Mountains Monday, January 20, 2025 6:22AM
• Silver Valley & Bitterroot Mountains Monday, January 20, 2025 6:22AM
• West Cabinet Mountains Monday, January 20, 2025 6:22AM
• PAC Advisory Area
• Banner Summit Monday, January 20, 2025 6:11AM
• Galena Summit & Eastern Mtns Monday, January 20, 2025 6:18AM
• Sawtooth & Western Smoky Mtns Monday, January 20, 2025 6:19AM
• Soldier & Wood River Valley Mtns Monday, January 20, 2025 6:14AM

Montana

• Flathead Range & Glacier NP Monday, January 20, 2025 6:38AM
• Swan Range Monday, January 20, 2025 6:38AM
• Whitefish Range Monday, January 20, 2025 6:38AM
• 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 Monday, January 20, 2025 6:53AM

New Mexico

• Northern New Mexico

Oregon

• Central Cascades Sunday, January 19, 2025 8:40PM
• Newberry
• Mt Hood Monday, January 20, 2025 6:00PM
• Southern Oregon
• Blues
• Elkhorns
• Northern Wallowas
• Southern Wallowas

Utah

• Abajos
• Logan Monday, January 20, 2025 6:03AM
• Moab Monday, January 20, 2025 6:03AM
• Ogden Monday, January 20, 2025 6:21AM
• Provo Monday, January 20, 2025 6:57AM
• Salt Lake Monday, January 20, 2025 3:58AM
• Skyline Monday, January 20, 2025 6:43AM
• Southwest
• Uintas Monday, January 20, 2025 4:07AM

Washington

• East Slopes Central Monday, January 20, 2025 6:00PM
• East Slopes North Monday, January 20, 2025 6:00PM
• East Slopes South Monday, January 20, 2025 6:00PM
• Olympics
• Snoqualmie Pass Monday, January 20, 2025 6:00PM
• Stevens Pass Monday, January 20, 2025 6:00PM
• West Slopes Central Monday, January 20, 2025 6:00PM
• West Slopes North Monday, January 20, 2025 6:00PM
• West Slopes South Monday, January 20, 2025 6:00PM

Wyoming

• Gros Ventre
• Salt River and Wyoming Ranges Monday, January 20, 2025 6:31AM
• Snake River Range Monday, January 20, 2025 6:31AM
• Southern Wyoming Range
• Tetons Monday, January 20, 2025 6:51AM
• Togwotee Pass Monday, January 20, 2025 7:15AM
• Big Horns
• Sierra Madre
• Snowy Range

Canada

• Canada zone Monday, January 20, 2025 5:00PM
• Canada zone Monday, January 20, 2025 5:00PM
• Canada zone Monday, January 20, 2025 4:00PM
• Canada zone Monday, January 20, 2025 5:00PM
• Canada zone Monday, January 20, 2025 5:00PM
• Canada zone Monday, January 20, 2025 4:00PM
• Canada zone Monday, January 20, 2025 4:00PM
• Canada zone Monday, January 20, 2025 4:00PM
• Canada zone Monday, January 20, 2025 5:00PM
• Canada zone Monday, January 20, 2025 4:00PM
• Canada zone Monday, January 20, 2025 5:00PM
• Canada zone Monday, January 20, 2025 4:00PM
• Canada zone Monday, January 20, 2025 4:00PM
• Canada zone Monday, January 20, 2025 4:00PM
• Canada zone Monday, January 20, 2025 4:00PM
• Canada zone Monday, January 20, 2025 5:00PM
• Canada zone Monday, January 20, 2025 5:00PM
• Canada zone Monday, January 20, 2025 3:00PM
• Canada zone Monday, January 20, 2025 4:00PM
• Canada zone Monday, January 20, 2025 4:00PM
• Canada zone Monday, January 20, 2025 5:00PM
• Canada zone Monday, January 20, 2025 4:00PM
• Canada zone
• Canada zone
• Canada zone Monday, January 20, 2025 4:00PM
• Canada zone Monday, January 20, 2025 4:00PM

Zones

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