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 2018-03-05
March 5, 2018 at 7:03

Light snow and wind return to our area today.  The avalanche danger is LOW this morning but will rise to MODERATE if we receive more than 6" of new snow. Look for small pockets of new or wind drifted snow on all aspects. A surface crust on sunny aspects will inhibit bonding and act as a slippery bed surface. Stay alert for changing conditions and monitor new snow amounts. Continue to practice safe travel techniques.

Swan Range
Click here to see the full advisory for 2018-03-05
March 5, 2018 at 6:49

Light snow and wind return to our area today.  Look for small pockets of new or wind drifted snow on all aspects. A surface crust on sunny aspects will inhibit bonding and act as a slippery bed surface. Stay alert for changing conditions and monitor new snow amounts. Continue to practice safe travel techniques.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-03-05
March 5, 2018 at 6:49

Light snow and wind return to our area today.  Look for small pockets of new or wind drifted snow on all aspects. A surface crust on sunny aspects will inhibit bonding and act as a slippery bed surface. Stay alert for changing conditions and monitor new snow amounts. Continue to practice safe travel techniques.

Whitefish Range
Click here to see the full advisory for 2018-03-04
March 4, 2018 at 7:01

The combination of yesterday's sunny warm weather and this morning's cold dry conditions has allowed the surface snowpack to gain strength. The avalanche danger is LOW. Watch for thin wind slabs on leeward aspects at upper elevations. Stay well away from cornices weakened during Saturday's warming. Continue to practice safe travel techniques.

Swan Range
Click here to see the full advisory for 2018-03-04
March 4, 2018 at 7:01

The combination of yesterday's sunny warm weather and this morning's cold dry conditions has allowed the surface snowpack to gain strength. The avalanche danger is LOW. Watch for thin wind slabs on leeward aspects at upper elevations. Stay well away from cornices weakened during Saturday's warming. Continue to practice safe travel techniques.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-03-04
March 4, 2018 at 7:01

The combination of yesterday's sunny warm weather and this morning's cold dry conditions has allowed the surface snowpack to gain strength. The avalanche danger is LOW. Watch for thin wind slabs on leeward aspects at upper elevations. Stay well away from cornices weakened during Saturday's warming. Continue to practice safe travel techniques.

Whitefish Range
Click here to see the full advisory for 2018-03-03
March 3, 2018 at 7:05

Yesterday's storm was intense but short-lived. Thin storm slabs formed on all aspects but will be thickest below ridgelines. Loose snow slides may be human triggered on steep slopes or initiate naturally with prolonged solar input. Evaluate the bonding of new snow to the old snow surface. Cracking under your feet or machine is an obvious sign of instability. 

Swan Range
Click here to see the full advisory for 2018-03-03
March 3, 2018 at 7:05

Yesterday's storm was intense but short-lived. Thin storm slabs formed on all aspects but will be thickest below ridgelines. Loose snow slides may be human triggered on steep slopes or initiate naturally with prolonged solar input. Evaluate the bonding of new snow to the old snow surface. Cracking under your feet or machine is an obvious sign of instability. 

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-03-03
March 3, 2018 at 7:05

Yesterday's storm was intense but short-lived. Thin storm slabs formed on all aspects but will be thickest below ridgelines. Loose snow slides may be human triggered on steep slopes or initiate naturally with prolonged solar input. Evaluate the bonding of new snow to the old snow surface. Cracking under your feet or machine is an obvious sign of instability. 

Whitefish Range
Click here to see the full advisory for 2018-03-02
March 2, 2018 at 6:58

The avalanche danger is MODERATE today but may rise to CONSIDERABLE later today if snowfall amounts are higher than forecasted. Changing conditions may develop with increasing snowfall intensity and wind loading. Evaluate storm totals and bonding of new snow to the old snow surface. Cracking in the snow surface is a signs of storm slab instability. 

Swan Range
Click here to see the full advisory for 2018-03-02
March 2, 2018 at 6:58

The avalanche danger is MODERATE today but may rise to CONSIDERABLE later today if snowfall amounts are higher than forecasted. Changing conditions may develop with increasing snowfall intensity and wind loading. Evaluate storm totals and bonding of new snow to the old snow surface. Cracking in the snow surface is a signs of storm slab instability. 

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-03-02
March 2, 2018 at 6:58

The avalanche danger is MODERATE today but may rise to CONSIDERABLE later today if snowfall amounts are higher than forecasted. Changing conditions may develop with increasing snowfall intensity and wind loading. Evaluate storm totals and bonding of new snow to the old snow surface. Cracking in the snow surface is a signs of storm slab instability. 

Whitefish Range
Click here to see the full advisory for 2018-03-01
March 1, 2018 at 7:22

Increasing temperatures at lower elevations will make loose wet avalanches possible today. Look for roller balls, pinwheels, or tree bombs to identify warming conditions. Relatively low density, cohesionless snow exist at mid and upper elevations where sluffing is possible on slopes greater than 35 degrees.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-03-01
March 1, 2018 at 7:22

Increasing temperatures at lower elevations will make loose wet avalanches possible today. Look for roller balls, pinwheels, or tree bombs to identify warming conditions. Relatively low density, cohesionless snow exist at mid and upper elevations where sluffing is possible on slopes greater than 35 degrees.

Swan Range
Click here to see the full advisory for 2018-03-01
March 1, 2018 at 7:22

Increasing temperatures at lower elevations will make loose wet avalanches possible today. Look for roller balls, pinwheels, or tree bombs to identify warming conditions. Relatively low density, cohesionless snow exist at mid and upper elevations where sluffing is possible on slopes greater than 35 degrees.

Whitefish Range
Click here to see the full advisory for 2018-02-28
February 28, 2018 at 7:01

Backcountry riders have triggered wind slabs or cracking snow in leeward terrain every day this week. Seek out soft, wind-sheltered powder for the safest riding conditions.  

Whitefish Range
Click here to see the full advisory for 2018-02-28
February 28, 2018 at 7:01

Backcountry riders have triggered wind slabs or cracking snow in leeward terrain every day this week. Seek out soft, wind-sheltered powder for the safest riding conditions.  

Swan Range
Click here to see the full advisory for 2018-02-28
February 28, 2018 at 7:00

Backcountry riders have triggered wind slabs or cracking snow in leeward terrain every day this week. Seek out soft, wind-sheltered powder for the safest riding conditions.  

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-02-27
February 27, 2018 at 7:13

The recent snow is most problematic on steep, wind loaded slopes. Be wary of thicker slabs in leeward terrain.

Whitefish Range
Click here to see the full advisory for 2018-02-27
February 27, 2018 at 7:13

The recent snow is most problematic on steep, wind loaded slopes. Be wary of thicker slabs in leeward terrain.

Swan Range
Click here to see the full advisory for 2018-02-27
February 27, 2018 at 7:11

The recent snow is most problematic on steep, wind loaded slopes. Be wary of thicker slabs in leeward terrain.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-02-26
February 26, 2018 at 6:58

The recent storm has ended down but the avalanche hazard remains elevated. Fresh wind slabs continue to thicken on leeward and cross-loaded slopes at upper elevations.  Yesterday's relatively dense snow is forming a storm slab problem in sheltered terrain. Watch for signs of instabilities in the new snow and wind-deposited snow such as cracking or collapsing.

Whitefish Range
Click here to see the full advisory for 2018-02-26
February 26, 2018 at 6:58

The recent storm has ended down but the avalanche hazard remains elevated. Fresh wind slabs continue to thicken on leeward and cross-loaded slopes at upper elevations.  Yesterday's relatively dense snow is forming a storm slab problem in sheltered terrain. Watch for signs of instabilities in the new snow and wind-deposited snow such as cracking or collapsing.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-02-26
February 26, 2018 at 6:58

The recent storm has ended down but the avalanche hazard remains elevated. Fresh wind slabs continue to thicken on leeward and cross-loaded slopes at upper elevations.  Yesterday's relatively dense snow is forming a storm slab problem in sheltered terrain. Watch for signs of instabilities in the new snow and wind-deposited snow such as cracking or collapsing.

Swan Range
Click here to see the full advisory for 2018-02-25
February 25, 2018 at 7:02

The avalanche hazard is increasing with moderate to strong southwest winds forming slabs on leeward aspects. Snow returns this morning and intensifies through the day possibly forming storm slabs in sheltered terrain. Slabs will thicken through the day with continued wind and snow. Watch for signs of instabilities in the new snow and wind-deposited snow such as cracking or collapsing.

Whitefish Range
Click here to see the full advisory for 2018-02-25
February 25, 2018 at 7:02

The avalanche hazard is increasing with moderate to strong southwest winds forming slabs on leeward aspects. Snow returns this morning and intensifies through the day possibly forming storm slabs in sheltered terrain. Slabs will thicken through the day with continued wind and snow. Watch for signs of instabilities in the new snow and wind-deposited snow such as cracking or collapsing.

Swan Range
Click here to see the full advisory for 2018-02-25
February 25, 2018 at 7:02

The avalanche hazard is increasing with moderate to strong southwest winds forming slabs on leeward aspects. Snow returns this morning and intensifies through the day possibly forming storm slabs in sheltered terrain. Slabs will thicken through the day with continued wind and snow. Watch for signs of instabilities in the new snow and wind-deposited snow such as cracking or collapsing.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-02-24
February 24, 2018 at 7:01

The return of light snow and southwest winds are forming thin storm slabs on a variety of surfaces. Slabs will be thickest and most reactive on leeward aspects at upper elevations. Slides may travel long distances due to the underlying firm bed surface. Use caution while riding above terrain traps and long-running gullies. Surface cracking and collapsing is a sign of a sensitive slab.  

Whitefish Range
Click here to see the full advisory for 2018-02-24
February 24, 2018 at 7:01

The return of light snow and southwest winds are forming thin storm slabs on a variety of surfaces. Slabs will be thickest and most reactive on leeward aspects at upper elevations. Slides may travel long distances due to the underlying firm bed surface. Use caution while riding above terrain traps and long-running gullies. Surface cracking and collapsing is a sign of a sensitive slab.  

Swan Range
Click here to see the full advisory for 2018-02-24
February 24, 2018 at 7:01

The return of light snow and southwest winds are forming thin storm slabs on a variety of surfaces. Slabs will be thickest and most reactive on leeward aspects at upper elevations. Slides may travel long distances due to the underlying firm bed surface. Use caution while riding above terrain traps and long-running gullies. Surface cracking and collapsing is a sign of a sensitive slab.  

Flathead Range and Glacier National Park

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