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., Saturday, June 8, 2024
E.g., Saturday, June 8, 2024
E.g., Saturday, June 8, 2024
Date the advisory was published:sort ascending Forecast Region
Click here to see the full advisory for 2020-12-09
December 9, 2020 at 6:13

The avalanche danger is on the rise as moisture streams into our area. Thin slabs may form on weak or slick surfaces at and above treeline, increasing the threat of slab avalanches. Cracks radiating away from you or your machine is a sign of instability. Below around 5500', loose slides will be possible where rain falls on snow. Rollerballs are precursors to these slides. Seek out terrain sheltered from the wind with dry snow for a safer, more enjoyable, option.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2020-12-09
December 9, 2020 at 6:13

The avalanche danger is on the rise as moisture streams into our area. Thin slabs may form on weak or slick surfaces at and above treeline, increasing the threat of slab avalanches. Cracks radiating away from you or your machine is a sign of instability. Below around 5500', loose slides will be possible where rain falls on snow. Rollerballs are precursors to these slides. Seek out terrain sheltered from the wind with dry snow for a safer, more enjoyable, option.

Whitefish Range
Click here to see the full advisory for 2020-12-09
December 9, 2020 at 6:13

The avalanche danger is on the rise as moisture streams into our area. Thin slabs may form on weak or slick surfaces at and above treeline, increasing the threat of slab avalanches. Cracks radiating away from you or your machine is a sign of instability. Below around 5500', loose slides will be possible where rain falls on snow. Rollerballs are precursors to these slides. Seek out terrain sheltered from the wind with dry snow for a safer, more enjoyable, option.

Swan Range
Click here to see the full advisory for 2020-12-05
December 5, 2020 at 6:37

 

The snowpack is generally stable. The exception is steep sunny slopes where isolated areas of dry surface snow remain. Continued warming and sunshine may moisten this surface and result in loose slides. With the thin snow cover, even a small avalanche can have severe consequences. Areas sheltered from the sun and wind offer a safer and higher quality experience. 

 

Flathead Range and Glacier National Park
Click here to see the full advisory for 2020-12-05
December 5, 2020 at 6:37

 

The snowpack is generally stable. The exception is steep sunny slopes where isolated areas of dry surface snow remain. Continued warming and sunshine may moisten this surface and result in loose slides. With the thin snow cover, even a small avalanche can have severe consequences. Areas sheltered from the sun and wind offer a safer and higher quality experience. 

 

Whitefish Range
Click here to see the full advisory for 2020-12-05
December 5, 2020 at 6:37

 

The snowpack is generally stable. The exception is steep sunny slopes where isolated areas of dry surface snow remain. Continued warming and sunshine may moisten this surface and result in loose slides. With the thin snow cover, even a small avalanche can have severe consequences. Areas sheltered from the sun and wind offer a safer and higher quality experience. 

 

Swan Range
Click here to see the full advisory for 2020-12-01
December 1, 2020 at 9:22

Avalanche conditions are generally safe. The exceptions are isolated thin slabs on north through east slopes at and above treeline. These will have a smoother and rounded appearance downwind of terrain features. Slopes sheltered from the wind offer soft snow and a safer option. More exceptions may occur on steep sunny slopes if prolonged sunshine develops. Move to shadier aspects, or lower slope angles, as the surface snow moistens.  

 

Flathead Range and Glacier National Park
Click here to see the full advisory for 2020-12-01
December 1, 2020 at 9:22

Avalanche conditions are generally safe. The exceptions are isolated thin slabs on north through east slopes at and above treeline. These will have a smoother and rounded appearance downwind of terrain features. Slopes sheltered from the wind offer soft snow and a safer option. More exceptions may occur on steep sunny slopes if prolonged sunshine develops. Move to shadier aspects, or lower slope angles, as the surface snow moistens.  

 

Whitefish Range
Click here to see the full advisory for 2020-12-01
December 1, 2020 at 9:22

Avalanche conditions are generally safe. The exceptions are isolated thin slabs on north through east slopes at and above treeline. These will have a smoother and rounded appearance downwind of terrain features. Slopes sheltered from the wind offer soft snow and a safer option. More exceptions may occur on steep sunny slopes if prolonged sunshine develops. Move to shadier aspects, or lower slope angles, as the surface snow moistens.  

 

Swan Range
Click here to see the full advisory for 2020-11-25
November 25, 2020 at 10:00

Another round of new snow and wind beginning Wednesday will bring changing avalanche conditions. Dial back your terrain selection if you begin to see 8 or more inches of new snow accumulate in the area you are traveling. Steer away from slopes where you see wind blowing snow into thicker, more dangerous slabs. Terrain that is sheltered from the wind with slope angles less than about 35 degrees will be your best bet for a safe and fun Thanksgiving week.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2020-11-25
November 25, 2020 at 10:00

Another round of new snow and wind beginning Wednesday will bring changing avalanche conditions. Dial back your terrain selection if you begin to see 8 or more inches of new snow accumulate in the area you are traveling. Steer away from slopes where you see wind blowing snow into thicker, more dangerous slabs. Terrain that is sheltered from the wind with slope angles less than about 35 degrees will be your best bet for a safe and fun Thanksgiving week.

Whitefish Range
Click here to see the full advisory for 2020-11-25
November 25, 2020 at 10:00

Another round of new snow and wind beginning Wednesday will bring changing avalanche conditions. Dial back your terrain selection if you begin to see 8 or more inches of new snow accumulate in the area you are traveling. Steer away from slopes where you see wind blowing snow into thicker, more dangerous slabs. Terrain that is sheltered from the wind with slope angles less than about 35 degrees will be your best bet for a safe and fun Thanksgiving week.

Swan Range
Click here to see the full advisory for 2020-11-20
November 20, 2020 at 11:28

Recently formed slabs of new and drifted snow can have harsh consequences if they drag you into rocks, trees, stumps, or gullies. Be observant in your travels and watch for areas where wind transported new snow into slabs deeper than 8 inches. Shooting cracks and collapses are signs to seek terrain with slope angles less than 35 degrees.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2020-11-20
November 20, 2020 at 11:28

Recently formed slabs of new and drifted snow can have harsh consequences if they drag you into rocks, trees, stumps, or gullies. Be observant in your travels and watch for areas where wind transported new snow into slabs deeper than 8 inches. Shooting cracks and collapses are signs to seek terrain with slope angles less than 35 degrees.

Whitefish Range
Click here to see the full advisory for 2020-11-20
November 20, 2020 at 11:28

Recently formed slabs of new and drifted snow can have harsh consequences if they drag you into rocks, trees, stumps, or gullies. Be observant in your travels and watch for areas where wind transported new snow into slabs deeper than 8 inches. Shooting cracks and collapses are signs to seek terrain with slope angles less than 35 degrees.

Swan Range
Click here to see the full advisory for 2020-11-17
November 17, 2020 at 8:30

Slabs of new and drifted snow can have harsh consequences if they drag you into rocks, trees, stumps, or gullies. Warming and rain can trigger avalanches when they affect cold dry snow. The hazards are most widespread at upper elevations, where there is enough snow covering hard, icy layers near the ground. Shooting cracks and collapses, or wet snow and roller balls are warning signs. Carry rescue gear and keep your partner in sight.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2020-11-17
November 17, 2020 at 8:30

Slabs of new and drifted snow can have harsh consequences if they drag you into rocks, trees, stumps, or gullies. Warming and rain can trigger avalanches when they affect cold dry snow. The hazards are most widespread at upper elevations, where there is enough snow covering hard, icy layers near the ground. Shooting cracks and collapses, or wet snow and roller balls are warning signs. Carry rescue gear and keep your partner in sight.

Whitefish Range
Click here to see the full advisory for 2020-11-17
November 17, 2020 at 8:30

Slabs of new and drifted snow can have harsh consequences if they drag you into rocks, trees, stumps, or gullies. Warming and rain can trigger avalanches when they affect cold dry snow. The hazards are most widespread at upper elevations, where there is enough snow covering hard, icy layers near the ground. Shooting cracks and collapses, or wet snow and roller balls are warning signs. Carry rescue gear and keep your partner in sight.

Swan Range
Click here to see the full advisory for 2020-11-14
November 14, 2020 at 11:57

With storms bringing new snow and strong winds to the region, be wary of slabs of new and drifted snow on steep slopes. These can have particularly harsh consequences if they drag you into rocks, trees, stumps, or gullies. The hazard is most widespread at upper elevations, where freshly-formed slabs may be sitting on hard, icy layers near the ground. Shooting cracks and collapses are warning signs of danger. Carry rescue gear and keep your partner in sight.

Whitefish Range
Click here to see the full advisory for 2020-11-14
November 14, 2020 at 11:57

With storms bringing new snow and strong winds to the region, be wary of slabs of new and drifted snow on steep slopes. These can have particularly harsh consequences if they drag you into rocks, trees, stumps, or gullies. The hazard is most widespread at upper elevations, where freshly-formed slabs may be sitting on hard, icy layers near the ground. Shooting cracks and collapses are warning signs of danger. Carry rescue gear and keep your partner in sight.

Swan Range
Click here to see the full advisory for 2020-11-14
November 14, 2020 at 11:57

With storms bringing new snow and strong winds to the region, be wary of slabs of new and drifted snow on steep slopes. These can have particularly harsh consequences if they drag you into rocks, trees, stumps, or gullies. The hazard is most widespread at upper elevations, where freshly-formed slabs may be sitting on hard, icy layers near the ground. Shooting cracks and collapses are warning signs of danger. Carry rescue gear and keep your partner in sight.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2020-11-10
November 10, 2020 at 8:59

The risk of triggered avalanches increases as more than 6 inches of new snow accumulates on top of a layered snowpack. Be extra critical of alpine terrain where weak layers may be buried under denser and deeper slabs of new snow. That’s where the resulting avalanche could be larger and more dangerous. Shooting cracks and collapses are warning signs that new snow is unstable and unsafe. Carry rescue gear and keep your partner in sight.

Whitefish Range
Click here to see the full advisory for 2020-11-10
November 10, 2020 at 8:59

The risk of triggered avalanches increases as more than 6 inches of new snow accumulates on top of a layered snowpack. Be extra critical of alpine terrain where weak layers may be buried under denser and deeper slabs of new snow. That’s where the resulting avalanche could be larger and more dangerous. Shooting cracks and collapses are warning signs that new snow is unstable and unsafe. Carry rescue gear and keep your partner in sight.

Swan Range
Click here to see the full advisory for 2020-11-10
November 10, 2020 at 8:59

The risk of triggered avalanches increases as more than 6 inches of new snow accumulates on top of a layered snowpack. Be extra critical of alpine terrain where weak layers may be buried under denser and deeper slabs of new snow. That’s where the resulting avalanche could be larger and more dangerous. Shooting cracks and collapses are warning signs that new snow is unstable and unsafe. Carry rescue gear and keep your partner in sight.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2020-11-05
November 5, 2020 at 14:10

Unsettled weather will add layers of new snow to the mountains through this weekend. Watch for cracking in new and windblown snow on steep slopes at higher elevations. That’s where the new precipitation is most likely to accumulate on smooth surfaces, rather than bare ground, creating the possibility for slab avalanches. Carry rescue gear - shovel, beacon, probe - and travel with a good partner.

Whitefish Range
Click here to see the full advisory for 2020-11-05
November 5, 2020 at 14:10

Unsettled weather will add layers of new snow to the mountains through this weekend. Watch for cracking in new and windblown snow on steep slopes at higher elevations. That’s where the new precipitation is most likely to accumulate on smooth surfaces, rather than bare ground, creating the possibility for slab avalanches. Carry rescue gear - shovel, beacon, probe - and travel with a good partner.

Swan Range
Click here to see the full advisory for 2020-11-05
November 5, 2020 at 14:10

Unsettled weather will add layers of new snow to the mountains through this weekend. Watch for cracking in new and windblown snow on steep slopes at higher elevations. That’s where the new precipitation is most likely to accumulate on smooth surfaces, rather than bare ground, creating the possibility for slab avalanches. Carry rescue gear - shovel, beacon, probe - and travel with a good partner.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2020-10-30
October 30, 2020 at 9:50

A layered snowpack exists at middle and upper elevations, and thus so does the potential for slab avalanches. Be aware of changing conditions and stay alert on or below steep terrain with continuous snow cover. Recent avalanches, shooting cracks in wind drifts, and wet snow are obvious signs of danger. Always carry rescue gear when avalanche terrain has enough snow to ride. Early season obstacles increase the consequences should you get caught in a slide.

Whitefish Range
Click here to see the full advisory for 2020-10-30
October 30, 2020 at 9:50

A layered snowpack exists at middle and upper elevations, and thus so does the potential for slab avalanches. Be aware of changing conditions and stay alert on or below steep terrain with continuous snow cover. Recent avalanches, shooting cracks in wind drifts, and wet snow are obvious signs of danger. Always carry rescue gear when avalanche terrain has enough snow to ride. Early season obstacles increase the consequences should you get caught in a slide.

Swan Range
Click here to see the full advisory for 2020-10-30
October 30, 2020 at 9:50

A layered snowpack exists at middle and upper elevations, and thus so does the potential for slab avalanches. Be aware of changing conditions and stay alert on or below steep terrain with continuous snow cover. Recent avalanches, shooting cracks in wind drifts, and wet snow are obvious signs of danger. Always carry rescue gear when avalanche terrain has enough snow to ride. Early season obstacles increase the consequences should you get caught in a slide.

Flathead Range and Glacier National Park

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