Date and Time of Avalanchesort descending Avalanche Type Trigger Size Starting Elevation Aspect Number of avalanches
05/03/2020 - 00:45
Flathead Range
Soft Slab Natural D1.5 , R1 7200' Northeast 1
05/03/2020 - 12:15
Flathead Range
Hard Slab Natural
Cornice Fall Triggered
D2 , R2 6900' Northeast 1
10/19/2020 - 14:45
Going-to-the-Sun Road
Unknown Natural D1.5 Above 6,500 ft Southwest 1
10/26/2020 - 12:15
Firebrand Pass Area
Hard Slab Natural D2 Above 6,500 ft East 2
11/12/2020 - 12:00
Forecaster Observation - Flathead Range
Soft Slab Skier
Intentionally Triggered
D1 , R1 Between 5,000 and 6,500 ft North 3
11/12/2020 - 12:45
Snyder Lake - GNP
Loose Dry/ Sluff Natural D1.5 Northwest 1
11/17/2020 - 11:00
Grant Ridge
Wet Loose Natural D1 , R1 Above 6,500 ft Southeast 1
11/17/2020 - 12:00
Sperry Chalet Basin
Wet Loose Natural D2 , R2 Above 6,500 ft Southwest 1
11/17/2020 - 14:30
Forecaster Observation - Swan Range
Wet Loose Natural D2 , R1 Between 5,000 and 6,500 ft Southwest 2
11/22/2020 - 12:30
East Ridge of Heavens Peak
Cornice On Foot (includes snowshoers, climbers/mountaineers, and hikers)
Accidentally Triggered
D2.5 , R2 7400' North 1
11/22/2020 - 12:30
Forecaster Observation: Southern Glacier Park
Soft Slab Skier
Intentionally Triggered
D1 , R1 Between 5,000 and 6,500 ft East 1

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