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 Tuesday, January 21, 2025 7:00AM
• Summit Lake Tuesday, January 21, 2025 7:00AM
• Turnagain Pass Tuesday, January 21, 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 Tuesday, January 21, 2025 7:00AM
• Mount Shasta Tuesday, January 21, 2025 6:24AM
• Central Sierra Nevada Tuesday, January 21, 2025 6:40AM

Colorado

• CAIC zone Tuesday, January 21, 2025 4:30PM
• CAIC zone Tuesday, January 21, 2025 4:30PM
• CAIC zone Tuesday, January 21, 2025 4:30PM
• CAIC zone Tuesday, January 21, 2025 4:30PM
• CAIC zone Tuesday, January 21, 2025 4:30PM
• CAIC zone Tuesday, January 21, 2025 4:30PM
• CAIC zone Tuesday, January 21, 2025 4:30PM
• CAIC zone Tuesday, January 21, 2025 4:30PM
• CAIC zone Tuesday, January 21, 2025 4:30PM
• CAIC zone Tuesday, January 21, 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 Tuesday, January 21, 2025 6:52AM
• Galena Summit & Eastern Mtns Tuesday, January 21, 2025 6:57AM
• Sawtooth & Western Smoky Mtns Tuesday, January 21, 2025 6:53AM
• Soldier & Wood River Valley Mtns Tuesday, January 21, 2025 6:58AM

Montana

• Flathead Range & Glacier NP Tuesday, January 21, 2025 6:56AM
• Swan Range Tuesday, January 21, 2025 6:56AM
• Whitefish Range Tuesday, January 21, 2025 6:56AM
• 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 Tuesday, January 21, 2025 6:41AM

New Mexico

• Northern New Mexico

Oregon

• Central Cascades Monday, January 20, 2025 8:13PM
• Newberry
• Mt Hood Tuesday, January 21, 2025 6:00PM
• Southern Oregon
• Blues
• Elkhorns
• Northern Wallowas
• Southern Wallowas

Utah

• Abajos
• Logan Tuesday, January 21, 2025 5:52AM
• Moab Tuesday, January 21, 2025 5:59AM
• Ogden Tuesday, January 21, 2025 6:28AM
• Provo Tuesday, January 21, 2025 6:49AM
• Salt Lake Tuesday, January 21, 2025 4:03AM
• Skyline Tuesday, January 21, 2025 7:01AM
• Southwest
• Uintas Tuesday, January 21, 2025 3:20AM

Washington

• East Slopes Central Tuesday, January 21, 2025 6:00PM
• East Slopes North Tuesday, January 21, 2025 6:00PM
• East Slopes South Tuesday, January 21, 2025 6:00PM
• Olympics
• Snoqualmie Pass Tuesday, January 21, 2025 6:00PM
• Stevens Pass Tuesday, January 21, 2025 6:00PM
• West Slopes Central Tuesday, January 21, 2025 6:00PM
• West Slopes North Tuesday, January 21, 2025 6:00PM
• West Slopes South Tuesday, January 21, 2025 6:00PM

Wyoming

• Gros Ventre
• Salt River and Wyoming Ranges Tuesday, January 21, 2025 6:56AM
• Snake River Range Tuesday, January 21, 2025 6:46AM
• Southern Wyoming Range
• Tetons Tuesday, January 21, 2025 6:56AM
• Togwotee Pass Tuesday, January 21, 2025 7:07AM
• Big Horns
• Sierra Madre
• Snowy Range

Canada

• Canada zone Tuesday, January 21, 2025 4:00PM
• Canada zone Tuesday, January 21, 2025 4:00PM
• Canada zone Tuesday, January 21, 2025 4:00PM
• Canada zone Tuesday, January 21, 2025 4:00PM
• Canada zone Tuesday, January 21, 2025 4:00PM
• Canada zone Tuesday, January 21, 2025 4:00PM
• Canada zone Tuesday, January 21, 2025 4:00PM
• Canada zone Tuesday, January 21, 2025 5:00PM
• Canada zone Tuesday, January 21, 2025 4:00PM
• Canada zone Monday, January 20, 2025 5:00PM
• Canada zone Tuesday, January 21, 2025 5:00PM
• Canada zone Tuesday, January 21, 2025 5:00PM
• Canada zone Tuesday, January 21, 2025 4:00PM
• Canada zone Tuesday, January 21, 2025 4:00PM
• Canada zone Tuesday, January 21, 2025 4:00PM
• Canada zone Tuesday, January 21, 2025 3:00PM
• Canada zone
• Canada zone
• Canada zone Tuesday, January 21, 2025 5:00PM
• Canada zone Tuesday, January 21, 2025 5:00PM
• Canada zone Tuesday, January 21, 2025 5:00PM
• Canada zone Tuesday, January 21, 2025 5:00PM
• Canada zone Tuesday, January 21, 2025 4:00PM
• Canada zone Tuesday, January 21, 2025 5:00PM
• Canada zone Tuesday, January 21, 2025 4:00PM
• Canada zone Tuesday, January 21, 2025 4:00PM

Zones

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