Date and Time of Avalanche Avalanche Type Trigger Size Starting Elevation Aspectsort descending Number of avalanches
01/13/2020 - 08:00
Forecaster Observation - Northern Whitefish Range
Unknown Natural D2 , R2 Southeast 1
12/20/2019 - 15:00
Forecaster Observation - McDonald Creek/ Middle Fork
Hard Slab Natural
Cornice Fall Triggered
D2 , R3 6100 Southeast 1
04/06/2018 - 12:00
Forecaster Observation - Mt. Stanton, GNP
Soft Slab Skier
Intentionally Triggered
D1 , R1 Above 6,500 ft Southwest 1
03/21/2019 - 15:15
Forecaster Observation- Road Observations
Wet Loose Natural D1 Southwest 1
02/20/2019 - 08:45
Choteau
Snowmobiler
Accidentally Triggered
D2 6000 Southwest 1
04/20/2018 - 12:45
Mt. Cannon, GNP
Soft Slab Natural Above 6,500 ft Southwest 1
02/28/2019 - 18:30
Forecaster Observation - Baldhead ridge
Cornice Natural
Cornice Fall Triggered
D1.5 , R3 Above 6,500 ft Southwest 1
02/17/2018 - 22:15
Professional Observation - Blaine Mtn, Swan Range
Hard Slab Natural D3.5 , unknown Above 6,500 ft Southwest 1
01/12/2020 - 23:00
Forecaster Observation - Northern Whitefish Range
Unknown Natural D2 , R3 Between 5,000 and 6,500 ft Southwest 5
11/17/2020 - 12:00
Sperry Chalet Basin
Wet Loose Natural D2 , R2 Above 6,500 ft Southwest 1
03/21/2019 - 15:15
Forecaster Observation- Road Observations
Wet Slab Natural D1 Southwest 1
02/06/2018 - 23:45
Forecaster Observation - Werner Peak Road, S. Whitefish Range
Hard Slab Snowcat
Accidentally Triggered
D2 , R3 Above 6,500 ft Southwest 1
04/19/2018 - 13:00
Mt. Cannon, GNP
Soft Slab Natural Above 6,500 ft Southwest 1
02/05/2019 - 12:15
Forecaster Observation - Canyon Creek
Soft Slab Skier
Intentionally Triggered
D1 , R1 6400 Southwest 1
03/21/2018 - 14:00
Forecaster Observation - Huckleberry Mountain, Apgar Range
Wet Loose Natural D1.5 , R2 Between 5,000 and 6,500 ft Southwest 1
03/21/2019 - 15:15
Forecaster Observation- Road Observations
Wet Slab Natural D3 Between 5,000 and 6,500 ft Southwest 1
02/20/2019 - 11:45
Forecaster Observation - East of WMR, Whitefish Range
Soft Slab Snowboarder
Accidentally Triggered
D1.5 , R2 6200' Southwest 1
01/24/2020 - 10:15
Forecaster Observation - Southern Whitefish Range
Wet Loose Natural D1 , R1 Below 5,000 ft Southwest 1
02/08/2018 - 15:00
Forecaster Observation- Grave Creek, Whitefish Range
Wet Loose Natural D1 , R1 Between 5,000 and 6,500 ft Southwest 1
02/20/2020 - 14:45
Forecaster Observation - Apgar Range and Swan Range
Wet Loose Natural D1 , R1 Between 5,000 and 6,500 ft Southwest 5

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