Date and Time of Avalanche | Avalanche Type |
Trigger![]() |
Size | Starting Elevation | Aspect | Number of avalanches |
---|---|---|---|---|---|---|
12/21/2019 - 15:15 Forecaster Observation - McDonald Creek/ Middle Fork |
Loose Dry/ Sluff | Natural | D1 , R1 | Between 5,000 and 6,500 ft | West | 2 |
02/27/2018 - 12:45 Forecaster Observation- Skiumah, Flathead Range |
Soft Slab | Natural | D1.5 , R1 | Above 6,500 ft | East | 1 |
12/15/2018 - 18:15 Forecaster Observation - Mt. Adams, Flathead Range |
Soft Slab | Natural | D2 , R2 | Above 6,500 ft | 1 | |
03/20/2019 - 17:15 JFS Canyon |
Wet Slab | Natural | D3 , R3 | Between 5,000 and 6,500 ft | 1 | |
01/13/2018 - 05:00 Forecaster Observation - Crystal Cr, Flathead Range |
Hard Slab | Natural | D4 , R4 | Above 6,500 ft | North | 1 |
03/16/2018 - 16:15 Forecaster Observation - Canyon Creek, southern Whitefish Range |
Wet Loose | Natural | D1 , R1 | Between 5,000 and 6,500 ft | South | 1 |
01/08/2021 - 14:00 Noisy Basin |
Cornice | Natural | 1 | |||
04/09/2020 - 12:15 Flathead Range |
Wet Loose | Natural | D2 , R2 | Between 5,000 and 6,500 ft | Southeast | 1 |
12/05/2020 - 15:00 Southern Flathead Range |
Wet Loose | Natural | D1 , R1 | Between 5,000 and 6,500 ft | South | 3 |
03/21/2020 - 13:15 tunnel |
Wet Loose | Natural | D1 | 3 | ||
12/20/2019 - 13:00 Forecaster Observation- Central Glacier Park |
Unknown | Natural | D2.5 , R3 | Northwest | 1 | |
03/09/2018 - 19:15 Forecaster Observation - Tunnel Ridge, Flathead Range |
Soft Slab | Natural | D2.5 , R3 | Above 6,500 ft | East | 1 |
01/06/2019 - 12:45 Forecaster Observation - Marion Lake, Flathead Range |
Soft Slab | Natural | D1 , R1 | Above 6,500 ft | East | 1 |
04/09/2019 - 12:00 Forecaster observation: Marias Pass |
Wet Loose | Natural | D1.5 , R1 | Below 5,000 ft | Northwest | 1 |
02/23/2021 - 15:30 Forecaster Observations - John F. Stevens Canyon |
Unknown | Natural | D2 , R3 | Between 5,000 and 6,500 ft | Southwest | 1 |
02/16/2020 - 14:00 Forecaster Observation - Skyland |
Unknown |
Natural
Cornice Fall Triggered |
D2 , R2 | 7300 | East | 1 |
03/20/2019 - 14:15 JFS Canyon |
Wet Slab | Natural | D3 | Between 5,000 and 6,500 ft | 1 | |
01/31/2021 - 12:00 Forecaster Observation - Flathead Range |
Wet Loose | Natural | D1 , R1 | Between 5,000 and 6,500 ft | Southeast | 2 |
03/13/2019 - 22:15 Forecaster Observation - Snowshed Mountain |
Soft Slab | Natural | D1 , R1 | 7200 | East | 1 |
01/13/2021 - 05:15 Ten Lakes |
Soft Slab | Natural | D2.5 , R3 | Between 5,000 and 6,500 ft | East | 11 |