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., Monday, December 10, 2018
E.g., Monday, December 10, 2018
E.g., Monday, December 10, 2018
Date the advisory was published:sort ascending Forecast Region
Click here to see the full advisory for 2018-12-10
December 10, 2018 at 7:00

Increasing winds will form shallow slabs at upper elevations. Evaluate wind loaded terrain below ridgelines and in gulleys.  Generally stable conditions are found on wind protected slopes. Sluffing remains possible in very steep terrain. Early season obstacles can increase the consequences of an avalanche.  

Swan Range
Click here to see the full advisory for 2018-12-10
December 10, 2018 at 7:00

Increasing winds will form shallow slabs at upper elevations. Evaluate wind loaded terrain below ridgelines and in gulleys.  Generally stable conditions are found on wind protected slopes. Sluffing remains possible in very steep terrain. Early season obstacles can increase the consequences of an avalanche.  

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-12-10
December 10, 2018 at 7:00

Increasing winds will form shallow slabs at upper elevations. Evaluate wind loaded terrain below ridgelines and in gulleys.  Generally stable conditions are found on wind protected slopes. Sluffing remains possible in very steep terrain. Early season obstacles can increase the consequences of an avalanche.  

Whitefish Range
Click here to see the full advisory for 2018-12-09
December 9, 2018 at 7:00

Recent winds have formed thin isolated slabs at upper elevations. Evaluate wind loaded terrain below ridgelines and in gulleys.  Expect generally stable conditions on wind protected slopes. Sluffing is possible in very steep terrain. Early season obstacles can increase the consequences of an avalanche.  

Swan Range
Click here to see the full advisory for 2018-12-09
December 9, 2018 at 7:00

Recent winds have formed thin isolated slabs at upper elevations. Evaluate wind loaded terrain below ridgelines and in gulleys.  Expect generally stable conditions on wind protected slopes. Sluffing is possible in very steep terrain. Early season obstacles can increase the consequences of an avalanche.  

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-12-09
December 9, 2018 at 7:00

Recent winds have formed thin isolated slabs at upper elevations. Evaluate wind loaded terrain below ridgelines and in gulleys.  Expect generally stable conditions on wind protected slopes. Sluffing is possible in very steep terrain. Early season obstacles can increase the consequences of an avalanche.  

Whitefish Range
Click here to see the full advisory for 2018-12-05
December 5, 2018 at 7:27

Increasing winds will form thin slabs on Wednesday that could remain sensitive to human triggers for several days.  At upper elevations, evaluate recently wind loaded terrain below ridgelines and in gulleys.  Generally stable conditions are found elsewhere, apart for shallow sluffing. Early season obstacles can increase the consequences of an avalanche.  

Swan Range
Click here to see the full advisory for 2018-12-05
December 5, 2018 at 7:27

Increasing winds will form thin slabs on Wednesday that could remain sensitive to human triggers for several days.  At upper elevations, evaluate recently wind loaded terrain below ridgelines and in gulleys.  Generally stable conditions are found elsewhere, apart for shallow sluffing. Early season obstacles can increase the consequences of an avalanche.  

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-12-05
December 5, 2018 at 7:27

Increasing winds will form thin slabs on Wednesday that could remain sensitive to human triggers for several days.  At upper elevations, evaluate recently wind loaded terrain below ridgelines and in gulleys.  Generally stable conditions are found elsewhere, apart for shallow sluffing. Early season obstacles can increase the consequences of an avalanche.  

Whitefish Range
Click here to see the full advisory for 2018-11-29
November 29, 2018 at 13:51

Light snow Friday night will increase the risk of loose dry avalanches where the most snow accumulates.  Monitor new snow totals as you travel.  Early season obstacles can increase the consequences of an avalanche.  Below about 6,000' the snow cover is generally too thin for avalanche concerns.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-11-29
November 29, 2018 at 13:51

Light snow Friday night will increase the risk of loose dry avalanches where the most snow accumulates.  Monitor new snow totals as you travel.  Early season obstacles can increase the consequences of an avalanche.  Below about 6,000' the snow cover is generally too thin for avalanche concerns.

Whitefish Range
Click here to see the full advisory for 2018-11-22
November 22, 2018 at 8:47

A series of storms will bring increasing avalanche hazard to high elevations into the holiday weekend.  Pay attention to local storm totals and be cautious of wind loaded slopes: newly formed slabs will not bond well to existing snow coverage.  Early season obstacles can increase the consequences of an avalanche.  The snowpack remains generally too shallow on low elevation or brushy slopes for avalanche concerns.  

Swan Range
Click here to see the full advisory for 2018-11-22
November 22, 2018 at 8:47

A series of storms will bring increasing avalanche hazard to high elevations into the holiday weekend.  Pay attention to local storm totals and be cautious of wind loaded slopes: newly formed slabs will not bond well to existing snow coverage.  Early season obstacles can increase the consequences of an avalanche.  The snowpack remains generally too shallow on low elevation or brushy slopes for avalanche concerns.  

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-11-22
November 22, 2018 at 8:47

A series of storms will bring increasing avalanche hazard to high elevations into the holiday weekend.  Pay attention to local storm totals and be cautious of wind loaded slopes: newly formed slabs will not bond well to existing snow coverage.  Early season obstacles can increase the consequences of an avalanche.  The snowpack remains generally too shallow on low elevation or brushy slopes for avalanche concerns.  

Whitefish Range
Click here to see the full advisory for 2018-11-15
November 15, 2018 at 12:59

New snow and increasing winds on Friday may create persisting instabilities on higher elevation, wind drifted terrain.  Early season obstacles can increase the consequences of an avalanche.  The snowpack remains generally too shallow on most mid and lower elevation slopes for avalanche concerns.

Swan Range
Click here to see the full advisory for 2018-11-15
November 15, 2018 at 12:59

New snow and increasing winds on Friday may create persisting instabilities on higher elevation, wind drifted terrain.  Early season obstacles can increase the consequences of an avalanche.  The snowpack remains generally too shallow on most mid and lower elevation slopes for avalanche concerns.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-11-15
November 15, 2018 at 12:59

New snow and increasing winds on Friday may create persisting instabilities on higher elevation, wind drifted terrain.  Early season obstacles can increase the consequences of an avalanche.  The snowpack remains generally too shallow on most mid and lower elevation slopes for avalanche concerns.

Whitefish Range
Click here to see the full advisory for 2018-11-09
November 9, 2018 at 7:23

An increase in wind speeds accompanied by new snow will form shallow instabilities on high elevation, wind drifted slopes through the weekend.  Beware of thin snow coverage and buried obstacles to amplify the consequences of an avalanche.  The snowpack is generally too shallow on most mid and lower elevation terrain for avalanche concerns.

Swan Range
Click here to see the full advisory for 2018-11-09
November 9, 2018 at 7:23

An increase in wind speeds accompanied by new snow will form shallow instabilities on high elevation, wind drifted slopes through the weekend.  Beware of thin snow coverage and buried obstacles to amplify the consequences of an avalanche.  The snowpack is generally too shallow on most mid and lower elevation terrain for avalanche concerns.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-11-09
November 9, 2018 at 7:23

An increase in wind speeds accompanied by new snow will form shallow instabilities on high elevation, wind drifted slopes through the weekend.  Beware of thin snow coverage and buried obstacles to amplify the consequences of an avalanche.  The snowpack is generally too shallow on most mid and lower elevation terrain for avalanche concerns.

Whitefish Range
Click here to see the full advisory for 2018-10-31
October 31, 2018 at 16:44

Continued precipitation, warming temperatures, and gusty winds leading into this weekend will cause increasing avalanche danger on high elevation, snow-covered slopes.  Watch for changing conditions and be wary of natural avalanches.  

Swan Range
Click here to see the full advisory for 2018-10-31
October 31, 2018 at 16:44

Continued precipitation, warming temperatures, and gusty winds leading into this weekend will cause increasing avalanche danger on high elevation, snow-covered slopes.  Watch for changing conditions and be wary of natural avalanches.  

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-10-31
October 31, 2018 at 16:44

Continued precipitation, warming temperatures, and gusty winds leading into this weekend will cause increasing avalanche danger on high elevation, snow-covered slopes.  Watch for changing conditions and be wary of natural avalanches.  

Whitefish Range
Click here to see the full advisory for 2018-10-26
October 26, 2018 at 9:56

An active weather pattern will bring a mix of rain and snow to the mountains under a cooling trend into the first week of November.  Watch for fresh storm instabilities to develop on high elevation, north facing slopes that are harboring old, weak snow leftover from earlier in the fall.  

Swan Range
Click here to see the full advisory for 2018-10-26
October 26, 2018 at 9:56

An active weather pattern will bring a mix of rain and snow to the mountains under a cooling trend into the first week of November.  Watch for fresh storm instabilities to develop on high elevation, north facing slopes that are harboring old, weak snow leftover from earlier in the fall.  

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-10-26
October 26, 2018 at 9:56

An active weather pattern will bring a mix of rain and snow to the mountains under a cooling trend into the first week of November.  Watch for fresh storm instabilities to develop on high elevation, north facing slopes that are harboring old, weak snow leftover from earlier in the fall.  

Whitefish Range
Click here to see the full advisory for 2018-10-12
October 12, 2018 at 15:01

Wintery conditions have left snow cover in some mountain areas, and it is time to turn your avalanche brains back on if you are traveling in steep, snow-covered terrain.  Be cautious of wind-drifted snow below ridgelines and in gullies.  A small slide can inflict harm if it drags you over rocks and vegetation.  

Swan Range
Click here to see the full advisory for 2018-10-12
October 12, 2018 at 15:01

Wintery conditions have left snow cover in some mountain areas, and it is time to turn your avalanche brains back on if you are traveling in steep, snow-covered terrain.  Be cautious of wind-drifted snow below ridgelines and in gullies.  A small slide can inflict harm if it drags you over rocks and vegetation.  

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-10-12
October 12, 2018 at 15:01

Wintery conditions have left snow cover in some mountain areas, and it is time to turn your avalanche brains back on if you are traveling in steep, snow-covered terrain.  Be cautious of wind-drifted snow below ridgelines and in gullies.  A small slide can inflict harm if it drags you over rocks and vegetation.  

Whitefish Range
Click here to see the full advisory for 2018-04-15
April 15, 2018 at 19:50

Springtime generally offers a more predictable snowpack in the mountains, but avalanche activity continues into summer in Northwest Montana. Avalanche conditions are dynamic - snow stability deteriorates quickly with subtle changes in snow, rain, wind, sun, and temperatures. Continue to assess the weather, snowpack, and terrain, and practice safe travel techniques until the snow melts. 

Swan Range

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