Use this page to view archived advisories. The table below shows the overall danger rating and the bottom line for the 20 most recent advisories. Click on the time and date link above each danger rating icon to view the full advisory for that day. Use the date chooser or the pager at the bottom to scroll through the older advisories.

E.g., Wednesday, January 17, 2018
E.g., Wednesday, January 17, 2018
E.g., Wednesday, January 17, 2018
Date the advisory was published:sort ascending Forecast Region
Click here to see the full advisory for 2018-01-16
January 16, 2018 at 6:43

Stability is improving, but a complicated snowpack with potential for suprising buried weak layers makes for heightened avalanche conditions today.  Carefully assess the snowpack before venturing into steeper terrain above 5,000 ft.  

Whitefish Range
Click here to see the full advisory for 2018-01-16
January 16, 2018 at 6:37

Stability is improving, but a complicated snowpack with potential for suprising buried weak layers makes for heightened avalanche conditions today.  Carefully assess the snowpack before venturing into steeper terrain above 5,000 ft.  

Swan Range
Click here to see the full advisory for 2018-01-16
January 16, 2018 at 6:00

Stability is improving, but a complicated snowpack with potential for suprising buried weak layers makes for heightened avalanche conditions today.  Carefully assess the snowpack before venturing into steeper terrain above 5,000 ft.  

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-01-15
January 15, 2018 at 6:52

The bountiful storm cycle is over but lingering storm slab instabilities exist, particularly in areas favored during the Friday/Saturday storm. The likelihood of a human triggered storm slab is decreasing but still possible on steep slopes. In areas that harbor a shallow snowpack It remains possible to trigger a very large avalanche on buried weak layers. With the complexity of problems in our snowpack it is best to travel with a conservative mindset until our snowpack adjusts to recent loading.

Whitefish Range
Click here to see the full advisory for 2018-01-15
January 15, 2018 at 6:50

The bountiful storm cycle is over but lingering storm slab instabilities exist, particularly in areas favored during the Friday/Saturday storm. The likelihood of a human triggered storm slab is decreasing but still possible on steep slopes. In areas that harbor a shallow snowpack It remains possible to trigger a very large avalanche on buried weak layers. With the complexity of problems in our snowpack it is best to travel with a conservative mindset until our snowpack adjusts to recent loading.

Swan Range
Click here to see the full advisory for 2018-01-15
January 15, 2018 at 6:48

The bountiful storm cycle is over but lingering storm slab instabilities exist, particularly in areas favored during the Friday/Saturday storm. The likelihood of a human triggered storm slab is decreasing but still possible on steep slopes. In areas that harbor a shallow snowpack It remains possible to trigger a very large avalanche on buried weak layers. With the complexity of problems in our snowpack it is best to travel with a conservative mindset until our snowpack adjusts to recent loading.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-01-14
January 14, 2018 at 6:59

Elevated avalanche conditions remain due to recent dense surface snow resting on lower density snow. Natural avalanche activity has diminished but a human triggered storm slab is possible on slopes steeper than 35 degrees at mid and upper elevations. In areas that harbor a shallow snowpack It remains possible to trigger a very large avalanche on buried weak layers. Evaluate the snow structure before committing to a slope and continue to practice safe travel techniques.

Whitefish Range
Click here to see the full advisory for 2018-01-14
January 14, 2018 at 6:58

Recent substantial precipitation has created dangerous avalanche conditions in the Swan Range. Dense surface snow resting on lower density snow has resulted in a storm slab problem. Natural avalanche activity has diminished but a human triggered storm slab is likely on slopes steeper than 35 degrees at mid and upper elevations. Practice patience and safe travel techniques while our snowpack adjusts to this load.

Swan Range
Click here to see the full advisory for 2018-01-14
January 14, 2018 at 6:58

Recent substantial precipitation has created dangerous avalanche conditions with dense surface snow resting on lower density snow. Natural avalanche activity has diminished but a human triggered storm slab is likely on slopes steeper than 35 degrees at mid and upper elevations. In areas that harbor a shallow snowpack It remains possible to trigger a very large avalanche on buried weak layers. Practice patience and safe travel techniques along with evaluating the snow structure while our snowpack adjusts to this load.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-01-13
January 13, 2018 at 7:00

Elevated avalanche conditions remain as dense snowfall overnight and today, accompanied by light to moderate winds, is deposited on lower density surface snow. A human triggered storm slab is possible on slopes steeper than 35 degrees at upper elevations. In areas that harbor a shallow snowpack It remains possible to trigger a very large avalanche on buried weak layers. Evaluate the snow structure before committing to a slope and continue to practice safe travel techniques.

Whitefish Range
Click here to see the full advisory for 2018-01-13
January 13, 2018 at 7:00

Elevated avalanche conditions remain as dense snowfall overnight and today, accompanied by light to moderate winds, is deposited on lower density surface snow. A human triggered storm slab is possible on slopes steeper than 35 degrees at upper elevations. In areas that harbor a shallow snowpack It remains possible to trigger a very large avalanche on buried weak layers. Evaluate the snow structure before committing to a slope and continue to practice safe travel techniques.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-01-13
January 13, 2018 at 6:58

Dangerous avalanche conditions remain as dense snowfall overnight and today, accompanied by light to moderate winds, is deposited on lower density surface snow. A human triggered storm slab is likely on slopes steeper than 35 degrees at mid and upper elevations. Evaluate the surface snow structure and continue to practice safe travel techniques.

Swan Range
Click here to see the full advisory for 2018-01-12
January 12, 2018 at 7:00

Dangerous avalanche conditions exist as snowfall continues to thicken sensitive storm slabs while adding additional load to buried weak layers. Natural or human triggering storm slabs will be most likely on slopes steeper than 35 degrees at upper elevations. The snowpack is safer at lower elevations where snowfall totals have been modest.

Swan Range
Click here to see the full advisory for 2018-01-12
January 12, 2018 at 6:59

Dangerous avalanche conditions exist as snowfall continues to thicken sensitive storm slabs while adding additional load to buried weak layers. Natural or human triggering storm slabs will be most likely on slopes steeper than 35 degrees at upper elevations. The snowpack is safer at lower elevations where snowfall totals have been modest.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-01-12
January 12, 2018 at 6:59

Dangerous avalanche conditions exist as snowfall continues to thicken sensitive storm slabs while adding additional load to buried weak layers. Natural or human triggering storm slabs will be most likely on slopes steeper than 35 degrees at upper elevations. The snowpack is safer at lower elevations where snowfall totals have been modest.

Whitefish Range
Click here to see the full advisory for 2018-01-11
January 11, 2018 at 7:05

Expect changing conditions and rising avalanche danger as another round of heavy snowfall and increasing wind speeds impact the advisory area, forming sensitive slabs and adding weight to buried weak layers. The avalanche danger is CONSIDERABLE at higher elevations and could rise to HIGH tonight.  You can find improving riding conditions and a safer snowpack at lower elevations today, but watch for the hazard to change tonight.

Swan Range
Click here to see the full advisory for 2018-01-11
January 11, 2018 at 7:03

Expect changing conditions and rising avalanche danger as another round of heavy snowfall and increasing wind speeds impact the advisory area, forming sensitive slabs and adding weight to buried weak layers. The avalanche danger is CONSIDERABLE at higher elevations and could rise to HIGH tonight.  You can find improving riding conditions and a safer snowpack at lower elevations today, but watch for the hazard to change tonight.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-01-11
January 11, 2018 at 7:03

Expect changing conditions and rising avalanche danger as another round of heavy snowfall and increasing wind speeds impact the advisory area, forming sensitive slabs and adding weight to buried weak layers. The avalanche danger is CONSIDERABLE at higher elevations and could rise to HIGH tonight.  You can find improving riding conditions and a safer snowpack at lower elevations today, but watch for the hazard to change tonight.

Whitefish Range
Click here to see the full advisory for 2018-01-10
January 10, 2018 at 7:09

Continued snowfall at higher elevations is making for dangerous avalanche conditions.  Storm slabs will be sensitive to human triggers on slopes steeper than 35 degrees, and persistent weak layers near the bottom of the snowpack are being tested by this warming and loading event.  You can find improving stability at lower elevations while being wary of the threat of natural releases from above.

Swan Range
Click here to see the full advisory for 2018-01-10
January 10, 2018 at 6:28

Continued snowfall at higher elevations is making for dangerous avalanche conditions.  Storm slabs will be sensitive to human triggers on slopes steeper than 35 degrees, and persistent weak layers near the bottom of the snowpack are being tested by this warming and loading event.  You can find improving stability at lower elevations while being wary of the threat of natural releases from above.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-01-10
January 10, 2018 at 6:28

Continued snowfall at higher elevations is making for dangerous avalanche conditions.  Storm slabs will be sensitive to human triggers on slopes steeper than 35 degrees, and persistent weak layers near the bottom of the snowpack are being tested by this warming and loading event.  You can find improving stability at lower elevations while being wary of the threat of natural releases from above.

Whitefish Range
Click here to see the full advisory for 2018-01-09
January 9, 2018 at 7:17

A warm and wet system will increase the avalanche danger today and tonight.  The danger is Moderate this morning and will rise to Considerable by this afternoon as new snow and gusty winds create sensitive storm instabilities.  Problematic weak layers still lurk deeper in the snowpack, complicating today's travel advice.  Default towards conservative terrain choices as conditions change through the day.  

Swan Range
Click here to see the full advisory for 2018-01-09
January 9, 2018 at 6:15

A warm and wet system will increase the avalanche danger today and tonight.  The danger is Moderate this morning and will rise to Considerable by this afternoon as new snow and gusty winds create sensitive storm instabilities.  Problematic weak layers still lurk deeper in the snowpack, complicating today's travel advice.  Default towards conservative terrain choices as conditions change through the day.  

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-01-09
January 9, 2018 at 6:15

A warm and wet system will increase the avalanche danger today and tonight.  The danger is Moderate this morning and will rise to Considerable by this afternoon as new snow and gusty winds create sensitive storm instabilities.  Problematic weak layers still lurk deeper in the snowpack, complicating today's travel advice.  Default towards conservative terrain choices as conditions change through the day.  

Whitefish Range
Click here to see the full advisory for 2018-01-08
January 8, 2018 at 6:58

Light snowfall combined with warm temperatures is consolidating the snowpack into a more cohesive slab overlying a poor snowpack structure that remains susceptible to human triggering.  This could result in a very large or destructive avalanche. Thin wind slabs have formed on leeward slopes at upper elevations from recent snow and southwest winds. Stay alert for obvious signs of instability such as cracking and collapsing, evaluate the snowpack before committing to steeper terrain, and continue practicing safe travel techniques.

Swan Range
Click here to see the full advisory for 2018-01-08
January 8, 2018 at 6:50

Light snowfall combined with warm temperatures is consolidating the snowpack into a more cohesive slab overlying a poor snowpack structure that remains susceptible to human triggering.  This could result in large or destructive avalanche. Thin wind slabs have formed on leeward slopes at upper elevations from recent snow and southwest winds. Stay alert for obvious signs of instability such as cracking and collapsing, evaluate the snowpack before committing to steeper terrain, and continue practicing safe travel techniques.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-01-08
January 8, 2018 at 6:50

Light snowfall combined with warm temperatures is consolidating the snowpack into a more cohesive slab overlying a poor snowpack structure that remains susceptible to human triggering.  This could result in large or destructive avalanche. Thin wind slabs have formed on leeward slopes at upper elevations from recent snow and southwest winds. Stay alert for obvious signs of instability such as cracking and collapsing, evaluate the snowpack before committing to steeper terrain, and continue practicing safe travel techniques.

Whitefish Range
Click here to see the full advisory for 2018-01-07
January 7, 2018 at 6:58

The current warming trend is consolidating the surface snow into a slab that is susceptible to human triggering in locations with a poor snowpack structure resulting in a very large destructive avalanche.  Recent and current winds have formed thin slabs on leeward aspects at upper elevations. Continue to practice safe travel techniques, recognize bulls eye data such as cracking and collapsing and evaluate the snowpack before committing to a steep slope.

Swan Range
Click here to see the full advisory for 2018-01-07
January 7, 2018 at 6:58

The current warming trend is consolidating the surface snow into a slab that is susceptible to human triggering in locations with a poor snowpack structure resulting in a very large destructive avalanche.  Recent and current winds have formed thin slabs on leeward aspects at upper elevations. Continue to practice safe travel techniques, recognize bulls eye data such as cracking and collapsing and evaluate the snowpack before committing to a steep slope.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-01-07
January 7, 2018 at 6:58

The current warming trend is consolidating the surface snow into a slab that is susceptible to human triggering in locations with a poor snowpack structure resulting in a very large destructive avalanche.  Recent and current winds have formed thin slabs on leeward aspects at upper elevations. Continue to practice safe travel techniques, recognize bulls eye data such as cracking and collapsing and evaluate the snowpack before committing to a steep slope.

Whitefish Range

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