Date and Time of Avalanche Avalanche Type Triggersort descending Size Starting Elevation Aspect Number of avalanches
03/18/2019 - 13:30
Forecaster Observation - Lake McDonald area
Hard Slab D2.5 , R2 Above 6,500 ft Southwest 1
02/13/2018 - 08:15
Essex Creek, Flathead Range
1
02/20/2019 - 05:30
Marion Lake
1
03/20/2019 - 03:45
Picture Chutes-Whitefish Mountain Resort
Wet Slab 20 lb ANFO explosive D2.5 , R4 Between 5,000 and 6,500 ft South 1
12/13/2019 - 10:00
Forecaster Observation - Southern Whitefish Range
Soft Slab AE D1.5 Between 5,000 and 6,500 ft 2
01/23/2020 - 14:30
Teton Pass winter sports area
Hard Slab AE (large ANFO)
Intentionally Triggered
D3 , R3 Above 6,500 ft East 1
03/13/2019 - 00:45
Forecaster Observation - Skiumah Creek, Flathead Range
Hard Slab Believe it was initiated by ice fall D3 , R2 ~7000' North 1
01/30/2018 - 12:45
Skiumah, Flathead Range
Hard Slab Cornice
Intentionally Triggered
D2.5 , R3 Above 6,500 ft North 1
01/01/2020 - 13:00
Hellroaring Basin
Soft Slab Explosive D2 , R3 Between 5,000 and 6,500 ft South 4
03/21/2019 - 16:15
Picture Chutes-Whitefish Mountain Resort
Wet Slab Explosive D2.5 South 1
03/22/2019 - 16:30
Picture Chutes-Whitefish Mountain Resort
Wet Slab Explosive D2.5 Between 5,000 and 6,500 ft 1
12/20/2019 - 07:45
Forecaster Observation- Southern Whitefish Range
Soft Slab Explosive
Intentionally Triggered
D1 , R1 Between 5,000 and 6,500 ft East 4
01/01/2020 - 13:00
Hellroaring Basin
Soft Slab Explosive D1 , R2 Between 5,000 and 6,500 ft West 4
04/01/2020 - 00:45
Flathead Range
Soft Slab Natural D2 , R2 Between 5,000 and 6,500 ft Northwest 4
04/14/2018 - 14:00
Forecaster Observation - Central GNP
Wet Loose Natural D1.5 , R2 Between 5,000 and 6,500 ft West 1
01/07/2020 - 13:30
Forecaster Observation - WMR Sidecountry
Soft Slab Natural D1 , R1 Between 5,000 and 6,500 ft East 4
03/14/2020 - 12:00
Forecaster Observation - Flathead Range
Soft Slab Natural D1 15
02/17/2018 - 22:15
Essex Creek
Loose Dry/ Sluff Natural D1.5 1
02/28/2020 - 12:15
Forecaster Observation- Central GNP
Wet Loose Natural D1 , R1 15
11/19/2019 - 14:15
Forecaster Observation - Southern Flathead Range
Unknown Natural D1.5 , R2 Above 6,500 ft 7

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