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., Thursday, November 21, 2024
E.g., Thursday, November 21, 2024
E.g., Thursday, November 21, 2024
Date the advisory was published:sort ascending Forecast Region
Click here to see the full advisory for 2016-02-05
February 5, 2016 at 6:45

The avalanche danger is CONSIDERABLE above 5000 ft. Strong winds and new snow formed slabs over a recently formed layer of surface hoar. Recent observations indicate these slabs are sensitive to human triggering. This recent snow also stresses deeper weak layers surrounding a variety of crusts located 1.5 to 4 feet from the snow surface. Human triggered avalanches are likely and dangerous conditions exist on wind loaded terrain. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential today.

Swan Range
Click here to see the full advisory for 2016-02-04
February 4, 2016 at 6:50

The avalanche danger is CONSIDERABLE above 5000 ft. New snow accompanied by moderate to strong winds will form wind slabs over a newly formed layer of surface hoar. This new snow will also stress deeper weak layers surrounding a variety of crusts located 1.5 to 4 feet from the snow surface. Human triggered avalanches are likely, particularly on wind loaded terrain. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential today.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2016-02-04
February 4, 2016 at 6:50

The avalanche danger is CONSIDERABLE above 5000 ft. New snow accompanied by moderate to strong winds will form wind slabs over a newly formed layer of surface hoar. This new snow will also stress deeper weak layers surrounding a variety of crusts located 1.5 to 4 feet from the snow surface. Human triggered avalanches are likely, particularly on wind loaded terrain. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential today.

Whitefish Range
Click here to see the full advisory for 2016-02-04
February 4, 2016 at 6:50

The avalanche danger is CONSIDERABLE above 5000 ft. New snow accompanied by moderate to strong winds will form wind slabs over a newly formed layer of surface hoar. This new snow will also stress deeper weak layers surrounding a variety of crusts located 1.5 to 4 feet from the snow surface. Human triggered avalanches are likely, particularly on wind loaded terrain. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential today.

Swan Range
Click here to see the full advisory for 2016-02-03
February 3, 2016 at 6:54

Recent wind deposited snow is slowly gaining strength but there still remains instability associated with wind slabs. The avalanche danger is MODERATE above 5000 feet. Human triggered avalanches are possible, especially in recently wind loaded areas and areas where weak snow deeper in the snowpack exists. This warrants careful snowpack evaluation and conservative terrain choices. The avalanche danger is LOW below 5000 feet.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2016-02-03
February 3, 2016 at 6:54

Recent wind deposited snow is slowly gaining strength but there still remains instability associated with wind slabs. The avalanche danger is MODERATE above 5000 feet. Human triggered avalanches are possible, especially in recently wind loaded areas and areas where weak snow deeper in the snowpack exists. This warrants careful snowpack evaluation and conservative terrain choices. The avalanche danger is LOW below 5000 feet.

Whitefish Range
Click here to see the full advisory for 2016-02-03
February 3, 2016 at 6:54

Recent wind deposited snow is slowly gaining strength but there still remains instability associated with wind slabs. The avalanche danger is MODERATE above 5000 feet. Human triggered avalanches are possible, especially in recently wind loaded areas and areas where weak snow deeper in the snowpack exists. This warrants careful snowpack evaluation and conservative terrain choices. The avalanche danger is LOW below 5000 feet.

Swan Range
Click here to see the full advisory for 2016-02-02
February 2, 2016 at 7:18

Wind speeds and precipitation have moderated over the past 2 days, but the recently drifted snow needs a chance to settle and strengthen. The avalanche danger is MODERATE above 5000 feet. Human triggered avalanches are possible, especially in wind loaded areas. The avalanche danger is LOW below 5000 feet. Isolated areas with reactive persistent slabs and lingering storm instabilities warrant careful snowpack evaluation and conservative terrain choices.

Whitefish Range
Click here to see the full advisory for 2016-02-02
February 2, 2016 at 7:18

Wind speeds and precipitation have moderated over the past 2 days, but the recently drifted snow needs a chance to settle and strengthen. The avalanche danger is MODERATE above 5000 feet. Human triggered avalanches are possible, especially in wind loaded areas. The avalanche danger is LOW below 5000 feet. Isolated areas with reactive persistent slabs and lingering storm instabilities warrant careful snowpack evaluation and conservative terrain choices.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2016-02-02
February 2, 2016 at 7:05

Light to moderate precipitation continued overnight and is expected throughout the day today in the Swan Range. The avalanche danger is CONSIDERABLE above 6000 feet on wind loaded slopes. Human triggered avalanches are likely.The avalanche danger is MODERATE on all other slopes. Isolated areas with reactive persistent slabs and lingering storm instabilities warrant careful snowpack evaluation and conservative terrain choices.

Swan Range
Click here to see the full advisory for 2016-02-01
February 1, 2016 at 7:00

The wind speeds have moderated, but the recently drifted snow needs a chance to settle and strengthen. The avalanche danger is CONSIDERABLE on wind loaded slopes above 6000 feet. Human triggered avalanches are likely in these wind loaded areas. All other slopes have a MODERATE danger. Human triggered avalanches are possible. Isolated areas with reactive persistent slabs and lingering storm instabilities warrant careful snowpack evaluation and conservative terrain choices.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2016-02-01
February 1, 2016 at 7:00

The wind speeds have moderated, but the recently drifted snow needs a chance to settle and strengthen. The avalanche danger is CONSIDERABLE on wind loaded slopes above 6000 feet. Human triggered avalanches are likely in these wind loaded areas. All other slopes have a MODERATE danger. Human triggered avalanches are possible. Isolated areas with reactive persistent slabs and lingering storm instabilities warrant careful snowpack evaluation and conservative terrain choices.

Whitefish Range
Click here to see the full advisory for 2016-02-01
February 1, 2016 at 7:00

The wind speeds have moderated, but the recently drifted snow needs a chance to settle and strengthen. The avalanche danger is CONSIDERABLE on wind loaded slopes above 6000 feet. Human triggered avalanches are likely in these wind loaded areas. All other slopes have a MODERATE danger. Human triggered avalanches are possible. Isolated areas with reactive persistent slabs and lingering storm instabilities warrant careful snowpack evaluation and conservative terrain choices.

Swan Range
Click here to see the full advisory for 2016-01-31
January 31, 2016 at 7:00

Recent snow with moderate to strong wind created windslabs that remain reactive. The avalanche danger is CONSIDERABLE on wind loaded slopes above 5500 feet. Human triggered avalanches are likely. In other terrain the danger is MODERATE. Human triggered avalanches are possible due to several weak layers that persist in the snowpack. Given the possibility of enhanced precipitation in isolated areas the hazard may rise on non-windloaded slopes. Continue to carefully evaluate the snowpack and choose conservative terrain. 

Flathead Range and Glacier National Park
Click here to see the full advisory for 2016-01-31
January 31, 2016 at 7:00

Recent snow with moderate to strong wind created windslabs that remain reactive. The avalanche danger is CONSIDERABLE on wind loaded slopes above 5500 feet. Human triggered avalanches are likely. In other terrain the danger is MODERATE. Human triggered avalanches are possible due to several weak layers that persist in the snowpack. Given the possibility of enhanced precipitation in isolated areas the hazard may rise on non-windloaded slopes. Continue to carefully evaluate the snowpack and choose conservative terrain. 

Whitefish Range
Click here to see the full advisory for 2016-01-31
January 31, 2016 at 7:00

Recent snow with moderate to strong wind created windslabs that remain reactive. The avalanche danger is CONSIDERABLE on wind loaded slopes above 5500 feet. Human triggered avalanches are likely. In other terrain the danger is MODERATE. Human triggered avalanches are possible due to several weak layers that persist in the snowpack. Given the possibility of enhanced precipitation in isolated areas the hazard may rise on non-windloaded slopes. Continue to carefully evaluate the snowpack and choose conservative terrain. 

Swan Range
Click here to see the full advisory for 2016-01-30
January 30, 2016 at 7:00

Up to a foot of new snow accompanied by strong, gusty winds added depth to recent wind slabs. The avalanche danger is HIGH on wind loaded slopes above 6000 feet and CONSIDERABLE in all other terrain. New storm and wind slabs will add stress to a variety of weak layers that persist in the snowpack. Avoid avalanche terrain at upper elevations including run out zones. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential. 

Flathead Range and Glacier National Park
Click here to see the full advisory for 2016-01-30
January 30, 2016 at 7:00

Up to a foot of new snow accompanied by strong, gusty winds added depth to recent wind slabs. The avalanche danger is HIGH on wind loaded slopes above 6000 feet and CONSIDERABLE in all other terrain. New storm and wind slabs will add stress to a variety of weak layers that persist in the snowpack. Avoid avalanche terrain at upper elevations including run out zones. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential. 

Whitefish Range
Click here to see the full advisory for 2016-01-30
January 30, 2016 at 7:00

Up to a foot of new snow accompanied by strong, gusty winds added depth to recent wind slabs. The avalanche danger is HIGH on wind loaded slopes above 6000 feet and CONSIDERABLE in all other terrain. New storm and wind slabs will add stress to a variety of weak layers that persist in the snowpack. Avoid avalanche terrain at upper elevations including run out zones. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential. 

Swan Range
Click here to see the full advisory for 2016-01-29
January 29, 2016 at 6:50

The avalanche danger is CONSIDERABLE above 5500 feet due to recent strong winds and a bit of new snow. Human triggered avalanches are likely on wind loaded terrain and possible on all other terrain. Weak snow surrounding a variety of crusts from January still poses a problem and the distribution is spotty making it tricky and potentially dangerous. Careful snowpack evaluation, cautious roue-finding, and conservative decision making are essential. 

 

Flathead Range and Glacier National Park
Click here to see the full advisory for 2016-01-29
January 29, 2016 at 6:50

The avalanche danger is CONSIDERABLE above 5500 feet due to recent strong winds and a bit of new snow. Human triggered avalanches are likely on wind loaded terrain and possible on all other terrain. Weak snow surrounding a variety of crusts from January still poses a problem and the distribution is spotty making it tricky and potentially dangerous. Careful snowpack evaluation, cautious roue-finding, and conservative decision making are essential. 

 

Whitefish Range
Click here to see the full advisory for 2016-01-29
January 29, 2016 at 6:50

The avalanche danger is CONSIDERABLE above 5500 feet due to recent strong winds and a bit of new snow. Human triggered avalanches are likely on wind loaded terrain and possible on all other terrain. Weak snow surrounding a variety of crusts from January still poses a problem and the distribution is spotty making it tricky and potentially dangerous. Careful snowpack evaluation, cautious roue-finding, and conservative decision making are essential. 

 

Swan Range
Click here to see the full advisory for 2016-01-28
January 28, 2016 at 6:50

The avalanche danger will rise to CONSIDERABLE on all slopes today and could reach HIGH by tonight. New snow, rain on snow, and strong winds will create dangerous avalanche conditions that include wet and dry snow avalanches. Human triggered avalanches will become more likely and natural avalanches are possible. New snow/rain combined with weak snow surrounding a variety of crusts deeper in the snowpack makes it dangerous and tricky right now. Pay attention to rapidly changing conditions. See discussion below.

 

Flathead Range and Glacier National Park
Click here to see the full advisory for 2016-01-28
January 28, 2016 at 6:50

The avalanche danger will rise to CONSIDERABLE on all slopes today and could reach HIGH by tonight. New snow, rain on snow, and strong winds will create dangerous avalanche conditions that include wet and dry snow avalanches. Human triggered avalanches will become more likely and natural avalanches are possible. New snow/rain combined with weak snow surrounding a variety of crusts deeper in the snowpack makes it dangerous and tricky right now. Pay attention to rapidly changing conditions. See discussion below.

 

Whitefish Range
Click here to see the full advisory for 2016-01-28
January 28, 2016 at 6:50

The avalanche danger will rise to CONSIDERABLE on all slopes today and could reach HIGH by tonight. New snow, rain on snow, and strong winds will create dangerous avalanche conditions that include wet and dry snow avalanches. Human triggered avalanches will become more likely and natural avalanches are possible. New snow/rain combined with weak snow surrounding a variety of crusts deeper in the snowpack makes it dangerous and tricky right now. Pay attention to rapidly changing conditions. See discussion below.

 

Swan Range
Click here to see the full advisory for 2016-01-27
January 27, 2016 at 7:15

Human triggered and natural avalanches were reported Saturday and Sunday. Natural activity appears to have ceased but human triggered avalanches are still likely. Our current snowpack is widely variable and backcountry travel is tricky and dangerous. The avalanche danger is CONSIDERABLE above 5000 feet and MODERATE below 5000 feet. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential.  For more information on the recent avalanche fatality please visit our observations page (observation).

Whitefish Range
Click here to see the full advisory for 2016-01-27
January 27, 2016 at 7:15

Human triggered and natural avalanches were reported Saturday and Sunday. Natural activity appears to have ceased but human triggered avalanches are still likely. Our current snowpack is widely variable and backcountry travel is tricky and dangerous. The avalanche danger is CONSIDERABLE above 5000 feet and MODERATE below 5000 feet. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential.  For more information on the recent avalanche fatality please visit our observations page (observation).

Swan Range
Click here to see the full advisory for 2016-01-27
January 27, 2016 at 7:15

Human triggered and natural avalanches were reported Saturday and Sunday. Natural activity appears to have ceased but human triggered avalanches are still likely. Our current snowpack is widely variable and backcountry travel is tricky and dangerous. The avalanche danger is CONSIDERABLE above 5000 feet and MODERATE below 5000 feet. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential.  For more information on the recent avalanche fatality please visit our observations page (observation).

Flathead Range and Glacier National Park
Click here to see the full advisory for 2016-01-26
January 26, 2016 at 6:56

Human triggered and natural avalanches were reported Saturday and Sunday. Natural activity continues to decrease but human triggered avalanches are still likely. Our current snowpack is widely variable and backcountry travel is tricky and dangerous. The avalanche danger is CONSIDERABLE above 5000 feet and MODERATE below 5000 feet. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential.  For more information on the recent avalanche fatality please visit our observations page (observation).

Whitefish Range
Click here to see the full advisory for 2016-01-26
January 26, 2016 at 6:56

Human triggered and natural avalanches were reported Saturday and Sunday. Natural activity continues to decrease but human triggered avalanches are still likely. Our current snowpack is widely variable and backcountry travel is tricky and dangerous. The avalanche danger is CONSIDERABLE above 5000 feet and MODERATE below 5000 feet. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential.  For more information on the recent avalanche fatality please visit our observations page (observation).

Swan Range

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