Date and Time of Avalanche Avalanche Type Trigger Size Starting Elevation Aspectsort descending Number of avalanches
01/13/2021 - 01:15
Southern Whitefish Range
Soft Slab Natural D2 , R4 Between 5,000 and 6,500 ft 30
02/08/2018 - 10:15
Forecaster Observation- McDonald Creek, GNP
Hard Slab Natural D3.5 , R4 1
Middle Fork 1
04/09/2020 - 14:15
Forecaster Observation - Central Swan Range
Wet Loose Natural D2.5 Above 6,500 ft 20
12/12/2018 - 01:45
Forecaster Observation - Canyon Creek, Whitefish Range
Soft Slab Natural D1.5 , R2 1
Forecaster Observation - Flathead Range 1
02/28/2020 - 12:15
Forecaster Observation- Central GNP
Wet Loose Natural D1 , R1 15
Great Northern 1
03/10/2019 - 13:15
Forecaster Observation- Mt Brown, Glacier NP
Wet Loose Natural D1.5 , R1 1
02/25/2021 - 13:30
Middle Fork
Soft Slab Skier
Intentionally Triggered
D1 , R1 Between 5,000 and 6,500 ft 4
03/20/2019 - 18:15
JFS Canyon
Wet Loose Natural D2.5 Between 5,000 and 6,500 ft 1
03/17/2019 - 20:30
BNSF Avalanche Program-JFS Canyon
Wet Loose Natural D1 Between 5,000 and 6,500 ft 1
Forecaster Observation - Cascade drainage, Flathead Range 1
03/28/2021 - 12:00
Swan Range
Soft Slab Snowmobiler 1
Essex 1
12/19/2017 - 13:30
Forecaster Observation - Ghoulie Ridge, Whitefish Range
Soft Slab Natural D1 , R1 Between 5,000 and 6,500 ft 1
04/01/2018 - 23:30
Forecaster Observation- Grant Ridge, Flathead Range
Soft Slab Natural D1.5 , R1 1
Wahoo 1
03/20/2019 - 13:15
Forecaster Observation - Lake McDonald, GNP
Unknown Natural D2.5 , unknown 1
Flathead Range 1

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