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., Tuesday, June 26, 2018
E.g., Tuesday, June 26, 2018
E.g., Tuesday, June 26, 2018
Date the advisory was published:sort ascending Forecast Region
Click here to see the full advisory for 2016-01-24
January 24, 2016 at 6:54

Both human triggered and natural avalanches were recently observed. Though natural activity should decrease, 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. An avalanche fatality occured in the area yesterday, more information below.

Whitefish Range
Click here to see the full advisory for 2016-01-23
January 23, 2016 at 7:02

The avalanche danger is CONSIDERABLE above 5000 feet. Strong, gusty winds drifted recent snow and formed fresh windslabs that may extend far below leeward ridglines. The existing snowpack harbors several persistent weak layers that vary in distribution and reactivity that make travel in avalanche terrain tricky. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential. Below 5000 feet the danger is MODERATE.

Swan Range
Click here to see the full advisory for 2016-01-23
January 23, 2016 at 7:02

The avalanche danger is CONSIDERABLE above 5000 feet. Strong, gusty winds drifted recent snow and formed fresh windslabs that may extend far below leeward ridglines. The existing snowpack harbors several persistent weak layers that vary in distribution and reactivity that make travel in avalanche terrain tricky. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential. Below 5000 feet the danger is MODERATE.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2016-01-23
January 23, 2016 at 7:02

The avalanche danger is CONSIDERABLE above 5000 feet. Strong, gusty winds drifted recent snow and formed fresh windslabs that may extend far below leeward ridglines. The existing snowpack harbors several persistent weak layers that vary in distribution and reactivity that make travel in avalanche terrain tricky. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential. Below 5000 feet the danger is MODERATE.

Whitefish Range
Click here to see the full advisory for 2016-01-22
January 22, 2016 at 6:30

The avalanche danger is CONSIDERABLE. Warming and rain later today will cause the danger to rise at low and mid-elevations and remain elevated at upper elevations. Pay attention to changing conditions and realize the danger could rise if it rains higher and more than expected. Recent new snow over a variety of buried crusts and weak layers combined with strong wind, snow, and rain is a recipe for avalanches. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential.

Swan Range
Click here to see the full advisory for 2016-01-22
January 22, 2016 at 6:30

The avalanche danger is CONSIDERABLE. Warming and rain later today will cause the danger to rise at low and mid-elevations and remain elevated at upper elevations. Pay attention to changing conditions and realize the danger could rise if it rains higher and more than expected. Recent new snow over a variety of buried crusts and weak layers combined with strong wind, snow, and rain is a recipe for avalanches. 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 2016-01-22
January 22, 2016 at 6:30

The avalanche danger is CONSIDERABLE. Warming and rain later today will cause the danger to rise at low and mid-elevations and remain elevated at upper elevations. Pay attention to changing conditions and realize the danger could rise if it rains higher and more than expected. Recent new snow over a variety of buried crusts and weak layers combined with strong wind, snow, and rain is a recipe for avalanches. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential.

Whitefish Range
Click here to see the full advisory for 2016-01-21
January 21, 2016 at 6:52

The avalanche danger is CONSIDERABLE. New snow and wind over the past 36 hours, and warming above freezing today will maintain dangerous avalanche conditions. Recent natural and human triggered avalanches confirm that now is not the time to push it into steep terrain. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential. The low elevation danger could also rise higher today with warming temperatures as the day progresses. Pay attention to changing conditions.

Swan Range
Click here to see the full advisory for 2016-01-21
January 21, 2016 at 6:52

The avalanche danger is CONSIDERABLE. New snow and wind over the past 36 hours, and warming above freezing today will maintain dangerous avalanche conditions. Recent natural and human triggered avalanches confirm that now is not the time to push it into steep terrain. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential. The low elevation danger could also rise higher today with warming temperatures as the day progresses. Pay attention to changing conditions.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2016-01-21
January 21, 2016 at 6:52

The avalanche danger is CONSIDERABLE. New snow and wind over the past 36 hours, and warming above freezing today will maintain dangerous avalanche conditions. Recent natural and human triggered avalanches confirm that now is not the time to push it into steep terrain. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential. The low elevation danger could also rise higher today with warming temperatures as the day progresses. Pay attention to changing conditions.

Whitefish Range
Click here to see the full advisory for 2016-01-20
January 20, 2016 at 7:15

Today, the avalanche danger is CONSIDERABLE above 5000'.  Substantial recent storm snow, along with new snow overnight, has fallen on a variety of weak layers and crusts.  Cautious route-finding, careful snowpack evaluation, and conservative decision making are essential. Human triggered avalanches are still likely on steep slopes today. The avalanche danger below 5000' is MODERATE.

Swan Range
Click here to see the full advisory for 2016-01-20
January 20, 2016 at 7:15

Today, the avalanche danger is CONSIDERABLE above 5000'.  Substantial recent storm snow, along with new snow overnight, has fallen on a variety of weak layers and crusts.  Cautious route-finding, careful snowpack evaluation, and conservative decision making are essential. Human triggered avalanches are still likely on steep slopes today. The avalanche danger below 5000' is MODERATE.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2016-01-20
January 20, 2016 at 7:15

Today, the avalanche danger is CONSIDERABLE above 5000'.  Substantial recent storm snow, along with new snow overnight, has fallen on a variety of weak layers and crusts.  Cautious route-finding, careful snowpack evaluation, and conservative decision making are essential. Human triggered avalanches are still likely on steep slopes today. The avalanche danger below 5000' is MODERATE.

Whitefish Range
Click here to see the full advisory for 2016-01-18
January 18, 2016 at 7:00

In the past 24 hours wet, heavy snow fell on less consolidated snow from the previous storm cycle.  Given the new storm slabs, existing variability with persistent slabs, and loose, wet avalanche potential at lower elevations the avalanche danger is CONSIDERABLE. Cautious route-finding and conservative decision making are essential in all terrain today. See Swan Range advisory here.

Whitefish Range
Click here to see the full advisory for 2016-01-18
January 18, 2016 at 7:00

In the past 24 hours wet, heavy snow fell on less consolidated snow from the previous storm cycle.  Given the new storm slabs, existing variability with persistent slabs, and loose, wet avalanche potential at lower elevations the avalanche danger is CONSIDERABLE. Cautious route-finding and conservative decision making are essential in all terrain today. See Swan Range advisory here.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2016-01-18
January 18, 2016 at 7:00

In the past 24 hours wet, heavy snow fell on less consolidated snow from the previous storm cycle. Given the new storm slabs and existing variability with persistent slabs the avalanche danger is HIGH above 6000 feet and CONSIDERABLE below 6000 feet. Avoid avalanche terrain at the upper elevations and all run-out zones. Both human triggered and natural avalanches are likely.

Swan Range
Click here to see the full advisory for 2016-01-17
January 17, 2016 at 7:00

Given the variability in the snowpack across the advisory area it is important to make conservative terrain choices and carefully evaluate the snowpack before skiing or riding on a slope. The avalanche danger is CONSIDERABLE above 5000 feet and MODERATE below 5000 feet. Weak snow in some places remains buried under unconsolidated snow and is waiting for the right conditions to form a slab and become reactive like rising temperature, increased wind, and continued settlement.

Swan Range
Click here to see the full advisory for 2016-01-17
January 17, 2016 at 7:00

Given the variability in the snowpack across the advisory area it is important to make conservative terrain choices and carefully evaluate the snowpack before skiing or riding on a slope. The avalanche danger is CONSIDERABLE above 5000 feet and MODERATE below 5000 feet. Weak snow in some places remains buried under unconsolidated snow and is waiting for the right conditions to form a slab and become reactive like rising temperature, increased wind, and continued settlement.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2016-01-17
January 17, 2016 at 7:00

Given the variability in the snowpack across the advisory area it is important to make conservative terrain choices and carefully evaluate the snowpack before skiing or riding on a slope. The avalanche danger is CONSIDERABLE above 5000 feet and MODERATE below 5000 feet. Weak snow in some places remains buried under unconsolidated snow and is waiting for the right conditions to form a slab and become reactive like rising temperature, increased wind, and continued settlement.

Whitefish Range
Click here to see the full advisory for 2016-01-16
January 16, 2016 at 7:00

We received reports of both natural and human triggered avalanches in the past two days. Dangerous avalanche conditions exist again today. The danger is CONSIDERABLE above 5000 feet, and human triggered avalanches are likely. Continue to choose conservative terrain and carefully evaluate the snowpack before committing to a slope. Below 5000 feet the avalanche danger is MODERATE.

Swan Range
Click here to see the full advisory for 2016-01-16
January 16, 2016 at 7:00

We received reports of both natural and human triggered avalanches in the past two days. Dangerous avalanche conditions exist again today. The danger is CONSIDERABLE above 5000 feet, and human triggered avalanches are likely. Continue to choose conservative terrain and carefully evaluate the snowpack before committing to a slope. Below 5000 feet the avalanche danger is MODERATE.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2016-01-16
January 16, 2016 at 7:00

We received reports of both natural and human triggered avalanches in the past two days. Dangerous avalanche conditions exist again today. The danger is CONSIDERABLE above 5000 feet, and human triggered avalanches are likely. Continue to choose conservative terrain and carefully evaluate the snowpack before committing to a slope. Below 5000 feet the avalanche danger is MODERATE.

Whitefish Range
Click here to see the full advisory for 2016-01-15
January 15, 2016 at 6:56

The avalanche danger is CONSIDERABLE above 5000 feet in the Whitefish, Flathead, and Glacier Park ranges. Human triggered storm and wind slabs are likely again today. Both human triggered and natural avalanches occurred yesterday. Careful snowpack evaluation, cautious route finding, and conservative decision making are essential today. See Swan Range advisory (danger: High).

Whitefish Range
Click here to see the full advisory for 2016-01-15
January 15, 2016 at 6:56

The avalanche danger is CONSIDERABLE above 5000 feet in the Whitefish, Flathead, and Glacier Park ranges. Human triggered storm and wind slabs are likely again today. Both human triggered and natural avalanches occurred yesterday. Careful snowpack evaluation, cautious route finding, and conservative decision making are essential today. See Swan Range advisory (danger: High).

Flathead Range and Glacier National Park
Click here to see the full advisory for 2016-01-15
January 15, 2016 at 6:55

The avalanche danger is HIGH above 6000 feet and CONSIDERABLE below. Dangerous avalanche conditions exist. The Swan Range received over 30 inches of snow and 5.2 inches of SWE in the past 48 hours. This is a huge load for any snowpack. Even though snowfall has tapered for the last 12 hours, both natural and human triggered avalanches are likely. Travel in avalanche terrain is not recommended. Stay off of and out from underneath slopes steeper than 30 degrees. 

Swan Range
Click here to see the full advisory for 2016-01-14
January 14, 2016 at 6:44

The avalanche danger is CONSIDERABLE for the Whitefish, Flathead, and Glacier Park ranges. Heavy, dense snow fell over the past 24 hours and continues today. This new snow is falling on recently buried weak layers and rain and sun crusts. Dangerous avalanche conditions exist and cautious route finding and conservative decision making are essential. Human triggered avalanches are likely and natural avalanches are possible. An avalanche warning and High danger is in effect for the Swan Range. See advisory.

Whitefish Range
Click here to see the full advisory for 2016-01-14
January 14, 2016 at 6:44

The avalanche danger is CONSIDERABLE for the Whitefish, Flathead, and Glacier Park ranges. Heavy, dense snow fell over the past 24 hours and continues today. This new snow is falling on recently buried weak layers and rain and sun crusts. Dangerous avalanche conditions exist and cautious route finding and conservative decision making are essential. Human triggered avalanches are likely and natural avalanches are possible. An avalanche warning and High danger is in effect for the Swan Range. See advisory.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2016-01-14
January 14, 2016 at 6:30

AVALANCHE WARNING IN EFFECT. The avalanche danger is HIGH. 3.2 inches of snow water equivalent has accumulated over the past 24 hours in the Swan Range. Continued heavy snow and wind will continue through today. Both natural and human triggered avalanches are likely. Travel in avalanche terrain is not recommended. Stay off of and out from underneath slopes steeper than 30 degrees. Avalanches may run long distances and can reach into mature forests.

Swan Range
Click here to see the full advisory for 2016-01-13
January 13, 2016 at 7:19

Today, the avalanche danger will begin as MODERATE but may rise to CONSIDERABLE by the end of the day above 6000 feet, especially on wind loaded terrain steeper than 35º. Today's snowfall and moderate winds will form slabs on top of crusts and near surface weak layers. Human triggered avalanches are likely with natural avalanches possible.  Carefully evaluate the snowpack before committing to any slope, particularly in steep, wind loaded terrain. The avalanche danger is MODERATE on all other terrain.

Swan Range
Click here to see the full advisory for 2016-01-13
January 13, 2016 at 7:19

Today, the avalanche danger will begin as MODERATE but may rise to CONSIDERABLE by the end of the day above 6000 feet, especially on wind loaded terrain steeper than 35º. Today's snowfall and moderate winds will form slabs on top of crusts and near surface weak layers. Human triggered avalanches are likely with natural avalanches possible.  Carefully evaluate the snowpack before committing to any slope, particularly in steep, wind loaded terrain. The avalanche danger is MODERATE on all other terrain.

Flathead Range and Glacier National Park

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