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Date and Time of Avalanche |
Avalanche Type![]() |
Trigger | Size | Starting Elevation | Aspect | Number of avalanches |
---|---|---|---|---|---|---|
01/05/2020 - 14:00 Forecaster Observation - Marias Pass |
Cornice |
Skier
Intentionally Triggered |
D1 , R2 | 5800 feet | Northeast | 1 |
03/22/2020 - 12:00 Forecaster Observation - Apgar Range |
Cornice | Natural | D1.5 | Between 5,000 and 6,500 ft | Northeast | 1 |
01/06/2021 - 01:00 Forecaster Observation - Skyland area |
Cornice | Natural | D2 , R2 | Above 6,500 ft | East | 4 |
03/05/2022 - 12:00 Southern Glacier National Park |
Cornice | Natural | D1 , R1 | Above 6,500 ft | East | 5 |
03/03/2020 - 14:15 Forecaster Observation - Northern Flathead Range |
Cornice | Natural | D1.5 | Above 6,500 ft | Northeast | 1 |
01/08/2021 - 14:00 Noisy Basin |
Cornice | Natural | 1 | |||
03/28/2022 - 12:00 Forecaster Observation - Flathead Range |
Cornice | Natural | D2 | Above 6,500 ft | East | 1 |
12/12/2019 - 14:00 Forecaster Observation - Swan Range (west side access) |
Cornice |
Skier
Intentionally Triggered |
D1 , R2 | Between 5,000 and 6,500 ft | Northeast | 2 |
11/22/2020 - 12:30 East Ridge of Heavens Peak |
Cornice |
On Foot (includes snowshoers, climbers/mountaineers, and hikers)
Accidentally Triggered |
D2.5 , R2 | 7400' | North | 1 |
02/02/2020 - 18:30 Mt. Aeneas |
Cornice | Natural | D2 | Above 6,500 ft | 1 | |
04/06/2020 - 14:30 Forecaster Observation - Flathead Range |
Cornice | Natural | D3 | Above 6,500 ft | East | 1 |
04/07/2020 - 14:45 Forecaster Observation |
Cornice | Natural | D2 | 1 | ||
02/20/2020 - 13:45 Forecaster Observation- Flathead Range |
Cornice | Natural | D1.5 | Above 6,500 ft | Northeast | 2 |
02/18/2020 - 12:00 Forecaster Observation - Flathead Range |
Cornice | Natural | D2.5 | Above 6,500 ft | Northeast | 1 |
04/22/2018 - 13:00 Forecaster Observation- Heavens Peak, GNP |
Cornice |
Skier
Accidentally Triggered |
D2 , R1 | Above 6,500 ft | Northeast | 1 |
02/28/2019 - 18:30 Forecaster Observation - Baldhead ridge |
Cornice |
Natural
Cornice Fall Triggered |
D1.5 , R3 | Above 6,500 ft | Southwest | 1 |
12/22/2021 - 12:15 Forecaster Observation - Swan Range |
Cornice | Natural | D1 , R1 | Between 5,000 and 6,500 ft | Northeast | 5 |
03/06/2020 - 12:15 Forecaster Observation - Middle Fork |
Cornice | Natural | D1.5 , R2 | Above 6,500 ft | East | 4 |
04/10/2022 - 12:00 Forecaster Observation - Flathead Range |
Loose Dry/ Sluff | Natural | D1.5 , R2 | Between 5,000 and 6,500 ft | Southeast | 3 |
01/27/2019 - 12:45 Forecaster Observation - Mt. Brown |
Loose Dry/ Sluff |
Skier
Intentionally Triggered |
D1 , R1 | 6,300 | Southeast | 1 |