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

• Chugach State Park
• Seward and Lost Lake
• Summit Lake
• Turnagain Pass
• Juneau
• Cordova
• Eastern Alaska Range
• Chilkat Pass Sunday, December 03, 2023 8:14AM
• Lutak Sunday, December 03, 2023 7:21AM
• Transitional Sunday, December 03, 2023 7:08AM
• Hatcher Pass
• Continental Thursday, December 07, 2023 8:00AM
• Intermountain Thursday, December 07, 2023 8:00AM
• Maritime Thursday, December 07, 2023 8:00AM

Arizona

• San Francisco Peaks / Kachina Peaks Wilderness

California

• Bridgeport Avalanche Center
• Eastside Region
• Mount Shasta Thursday, December 07, 2023 6:45AM
• Central Sierra Nevada Thursday, December 07, 2023 6:49AM

Colorado

• CAIC zone Thursday, December 07, 2023 4:30PM
• CAIC zone Thursday, December 07, 2023 4:30PM
• CAIC zone Thursday, December 07, 2023 4:30PM
• CAIC zone Thursday, December 07, 2023 4:30PM
• CAIC zone Thursday, December 07, 2023 4:30PM
• CAIC zone Thursday, December 07, 2023 4:30PM
• CAIC zone Thursday, December 07, 2023 4:30PM
• CAIC zone Thursday, December 07, 2023 4:30PM
• CAIC zone Thursday, December 07, 2023 4:30PM

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

Montana

• Flathead Range & Glacier NP Thursday, December 07, 2023 7:06AM
• Swan Range Thursday, December 07, 2023 7:06AM
• Whitefish Range Thursday, December 07, 2023 7:08AM
• 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

New Hampshire

• Presidential Range

New Mexico

• Northern New Mexico

Oregon

• Central Cascades Wednesday, December 06, 2023 8:30PM
• Newberry
• Mt Hood Thursday, December 07, 2023 6:00PM
• Southern Oregon
• Blues
• Elkhorns
• Northern Wallowas
• Southern Wallowas

Utah

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

Washington

• East Slopes Central Wednesday, December 06, 2023 6:00PM
• East Slopes North Thursday, December 07, 2023 6:00PM
• East Slopes South Wednesday, December 06, 2023 6:00PM
• Olympics Thursday, December 07, 2023 6:00PM
• Snoqualmie Pass Thursday, December 07, 2023 6:00PM
• Stevens Pass Thursday, December 07, 2023 6:12PM
• West Slopes Central Thursday, December 07, 2023 6:00PM
• West Slopes North Thursday, December 07, 2023 6:00PM
• West Slopes South Thursday, December 07, 2023 6:00PM

Wyoming

• Greys River Thursday, December 07, 2023 7:16AM
• Tetons Thursday, December 07, 2023 7:12AM
• Togwotee Pass Thursday, December 07, 2023 7:03AM
• Big Horns
• Sierra Madre
• Snowy Range

Canada

• Canada zone Thursday, December 07, 2023 5:00PM
• Canada zone Thursday, December 07, 2023 4:00PM
• Canada zone Thursday, December 07, 2023 5:00PM
• Canada zone
• Canada zone Thursday, December 07, 2023 4:00PM
• Canada zone Thursday, December 07, 2023 4:00PM
• Canada zone Thursday, December 07, 2023 4:00PM
• Canada zone
• Canada zone Thursday, December 07, 2023 5:00PM
• Canada zone Thursday, December 07, 2023 5:00PM
• Canada zone Thursday, December 07, 2023 4:00PM
• Canada zone Thursday, December 07, 2023 4:00PM
• Canada zone Thursday, December 07, 2023 5:30PM
• Canada zone Thursday, December 07, 2023 5:00PM
• Canada zone
• Canada zone Thursday, December 07, 2023 2:45PM
• Canada zone
• Canada zone Thursday, December 07, 2023 4:00PM
• Canada zone Thursday, December 07, 2023 4:00PM
• Canada zone Thursday, December 07, 2023 5:00PM
• Canada zone Thursday, December 07, 2023 4:00PM
• Canada zone Thursday, December 07, 2023 4:00PM
• Canada zone Thursday, December 07, 2023 4:00PM
• Canada zone Thursday, December 07, 2023 4:00PM
• Canada zone Thursday, December 07, 2023 4:00PM

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