Avalanche Maps

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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 Saturday, April 01, 2023 7:00AM
• Eastside Region Saturday, April 01, 2023 7:00AM
• Mount Shasta Saturday, April 01, 2023 5:46AM
• Central Sierra Nevada Saturday, April 01, 2023 6:44AM

Wyoming

• Greys River Saturday, April 01, 2023 7:14AM
• Tetons Saturday, April 01, 2023 7:07AM
• Togwotee Pass Saturday, April 01, 2023 7:11AM
• Big Horns
• Sierra Madre
• Snowy Range

Oregon

• Central Cascades Friday, March 31, 2023 9:07PM
• Newberry
• Mt Hood Saturday, April 01, 2023 6:30PM
• Blues Saturday, April 01, 2023 7:00AM
• Elkhorns Saturday, April 01, 2023 7:00AM
• Northern Wallowas Saturday, April 01, 2023 7:00AM
• Southern Wallowas Saturday, April 01, 2023 7:00AM

Montana

• Flathead Range & Glacier NP Saturday, April 01, 2023 7:00AM
• Swan Range Saturday, April 01, 2023 7:00AM
• Whitefish Range Saturday, April 01, 2023 7:00AM
• Bridger Range
• Cooke City
• Island Park
• Lionhead Area
• Northern Gallatin Range
• Northern Madison Range
• Southern Gallatin Range
• Southern Madison Range
• Kootenai Saturday, April 01, 2023 9:51AM
• Bitterroot Saturday, April 01, 2023 6:58AM
• Rattlesnake Saturday, April 01, 2023 6:59AM
• Seeley Lake Saturday, April 01, 2023 6:59AM

Idaho

• Selkirks & Cabinets
• St. Regis & Silver Valley Saturday, April 01, 2023 8:51AM
• PAC Advisory Area Saturday, April 01, 2023 7:14AM
• Banner Summit Saturday, April 01, 2023 6:53AM
• Galena Summit & Eastern Mtns Saturday, April 01, 2023 6:53AM
• Sawtooth & Western Smoky Mtns Saturday, April 01, 2023 6:53AM
• Soldier & Wood River Valley Mtns

Arizona

• San Francisco Peaks / Kachina Peaks Wilderness Saturday, April 01, 2023 7:13AM

New Hampshire

• Presidential Range Saturday, April 01, 2023 7:11AM

Washington

• East Slopes Central Saturday, April 01, 2023 6:30PM
• East Slopes North Saturday, April 01, 2023 6:30PM
• East Slopes South Saturday, April 01, 2023 6:34PM
• Olympics
• Snoqualmie Pass Saturday, April 01, 2023 6:30PM
• Stevens Pass Saturday, April 01, 2023 6:30PM
• West Slopes Central Saturday, April 01, 2023 6:40PM
• West Slopes North Saturday, April 01, 2023 6:30PM
• West Slopes South Saturday, April 01, 2023 6:30PM

New Mexico

• Northern New Mexico Saturday, April 01, 2023 7:29AM

Utah

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

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