Date and Time of Avalanche Avalanche Type Trigger Size Starting Elevation Aspectsort descending Number of avalanches
12/19/2017 - 22:30
Forecaster Observation - Red Meadow Lake, Whitefish Range
Soft Slab Natural D2 , R2 Above 6,500 ft 1
01/14/2020 - 12:00
Lost Johnny
Loose Dry/ Sluff Natural
Intentionally Triggered
D1 , R1 Between 5,000 and 6,500 ft 25
03/10/2019 - 13:15
Forecaster Observation- Mt Brown, Glacier NP
Wet Loose Natural D1.5 , R1 1
02/17/2018 - 22:15
Essex Creek
Soft Slab Natural D2 Above 6,500 ft 1
12/29/2017 - 18:15
Forecaster Observation- Cascadilla, Flathead Range
Soft Slab D2 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
03/17/2019 - 20:30
BNSF Avalanche Program-JFS Canyon
Wet Loose Natural D1 Between 5,000 and 6,500 ft 1
02/08/2018 - 12:00
Lake McDonald
Unknown D3 1
03/20/2019 - 13:15
Forecaster Observation - Lake McDonald, GNP
Unknown Natural D2.5 , unknown 1
01/04/2020 - 10:00
Forecaster Observation - BC Flathead Range
Soft Slab Natural D1.5 , R1 Above 6,500 ft 5
04/09/2020 - 14:15
Forecaster Observation - Central Swan Range
Wet Loose Natural D2.5 Above 6,500 ft 20
03/17/2018 - 17:45
Rescue Creek/Mt Penrose
1
01/27/2019 - 17:45
Crystal Cascadilla Loop
Soft Slab Skier
Intentionally Triggered
Above 6,500 ft 1
02/28/2020 - 12:15
Forecaster Observation- Central GNP
Wet Loose D2 , R2 5
02/09/2020 - 12:45
Forecaster Observation - Flathead Range, Middle Fork Corridor
Loose Dry/ Sluff Skier D1 , R1 Between 5,000 and 6,500 ft 6
01/17/2020 - 12:00
Forecaster Observation - Central Swan
Soft Slab Natural D1 , R1 20
12/23/2017 - 21:00
Skook Face
1
03/13/2019 - 12:45
Forecaster Observation - Wahoo Creek, Flathead Range
Wet Loose Natural D1 , R1 1
02/17/2018 - 22:15
Essex Creek
Loose Dry/ Sluff Natural D1.5 1
01/08/2018 - 20:45
Cascadilla drainage
1

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