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 2018-02-01
February 1, 2018 at 7:02

Heightened avalanche conditions exist at upper elevations from the combination of low density snow and moderate, westerly winds forming wind slabs on leeward slopes and gullies. Some slopes could harbor new snow depths greater than 6”, so evaluate snow depths before committing to bigger terrain. Fresh instabilities overlap with stubborn, but high consequence persistent slab problems.

Swan Range
Click here to see the full advisory for 2018-02-01
February 1, 2018 at 7:01

Heightened avalanche conditions exist at upper elevations from the combination of low density snow and moderate, westerly winds forming wind slabs on leeward slopes and gullies. Some slopes could harbor new snow depths greater than 6”, so evaluate snow depths before committing to bigger terrain. Fresh instabilities overlap with stubborn, but high consequence persistent slab problems.

Whitefish Range
Click here to see the full advisory for 2018-02-01
February 1, 2018 at 7:00

Heightened avalanche conditions exist at mid and upper elevations from the combination of low density snow and moderate, westerly winds forming wind slabs on leeward slopes and gullies. Some slopes could harbor new snow depths greater than 6”, so evaluate snow depths before committing to bigger terrain. Fresh instabilities overlap with stubborn, but high consequence persistent slab problems.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-01-31
January 31, 2018 at 6:56

The snowpack continues to gradually stabilize following last week's storm and avalanche cycle.  Heightened avalanche conditions exist at upper elevations, where recent wind loading overlaps with stubborn but consequential persistent slab concerns.

Swan Range
Click here to see the full advisory for 2018-01-31
January 31, 2018 at 5:53

The snowpack continues to gradually stabilize following last week's storm and avalanche cycle.  Heightened avalanche conditions exist at upper elevations, where recent wind loading overlaps with stubborn but consequential persistent slab concerns.

Whitefish Range
Click here to see the full advisory for 2018-01-31
January 31, 2018 at 5:53

The snowpack continues to gradually stabilize following last week's storm and avalanche cycle.  Heightened avalanche conditions exist at upper elevations, where recent wind loading overlaps with stubborn but consequential persistent slab concerns.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-01-30
January 30, 2018 at 7:18

The snowpack continues to consolidate after last week's storm, but intense winds overnight and a variable distribution of buried weak layers warrants attentive terrain selection and snowpack assessments.  Avoid wind loaded terrain and be cautious of open, unsupported slopes. 

Swan Range
Click here to see the full advisory for 2018-01-30
January 30, 2018 at 7:16

The snowpack continues to consolidate after last week's storm, but intense winds overnight and a variable distribution of buried weak layers warrants attentive terrain selection and snowpack assessments.  Avoid wind loaded terrain and be cautious of open, unsupported slopes. 

Whitefish Range
Click here to see the full advisory for 2018-01-30
January 30, 2018 at 6:44

The snowpack continues to consolidate after last week's storm, but intense winds overnight and a variable distribution of buried weak layers warrants conservative terrain selection and snowpack assessments.  Avoid wind loaded terrain and be cautious of open, unsupported slopes. 

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-01-29
January 29, 2018 at 7:01

Natural and/or skier triggered avalanches occurred each of the past three days. Warming temperatures, strong winds, heavy dense snow at mid/upper elevations with rain at lower elevations has created dangerous avalanche conditions. Storm slabs will be more reactive and widespread than yesterday with wet loose activity increasing. A variety of crusts/weak layers exist in our snowpack which are being stressed from this weeks loading, possibly resulting in a large avalanche. Choosing lower angle sheltered terrain is recommended today.

Swan Range
Click here to see the full advisory for 2018-01-29
January 29, 2018 at 7:00

Natural and/or skier triggered avalanches occurred each of the past three days. Warming temperatures, strong winds, heavy dense snow at mid/upper elevations with rain at lower elevations has created dangerous avalanche conditions. Storm slabs will be more reactive and widespread than yesterday with wet loose activity increasing. A variety of crusts/weak layers exist in our snowpack which are being stressed from this weeks loading, possibly resulting in a large avalanche. Choosing lower angle sheltered terrain is recommended today.

Whitefish Range
Click here to see the full advisory for 2018-01-29
January 29, 2018 at 7:00

Natural and/or skier triggered avalanches occurred each of the past three days. Warming temperatures, strong winds, heavy dense snow at mid/upper elevations with rain at lower elevations has created dangerous avalanche conditions. Storm slabs will be more reactive and widespread than yesterday with wet loose activity increasing. A variety of crusts/weak layers exist in our snowpack which are being stressed from this weeks loading, possibly resulting in a large avalanche. Choosing lower angle sheltered terrain is recommended today.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-01-28
January 28, 2018 at 7:02

Overnight, relatively warm dense snow fell on lower density snow creating an unstable storm slab. Warming temperatures, combined with a rain/snow mix, will increase the loose wet hazard at low and mid elevations as the day progresses. A variety of crusts and weak layers exist in our snowpack which are being stressed from this weeks loading, possibly resulting in a large avalanche. Choosing lower angle terrain is recommended today while noting surface cracking and rollerball activity.

Swan Range
Click here to see the full advisory for 2018-01-28
January 28, 2018 at 6:59

Overnight, relatively warm dense snow fell on lower density snow creating an unstable storm slab. Warming temperatures, combined with a rain/snow mix, will increase the loose wet hazard at low and mid elevations as the day progresses. A variety of crusts and weak layers exist in our snowpack which are being stressed from this weeks loading, possibly resulting in a large avalanche. Choosing lower angle terrain is recommended today while noting surface cracking and rollerball activity.

Whitefish Range
Click here to see the full advisory for 2018-01-28
January 28, 2018 at 6:59

Overnight, relatively warm dense snow fell on lower density snow creating an unstable storm slab. Warming temperatures, combined with a rain/snow mix, will increase the loose wet hazard at low and mid elevations as the day progresses. A variety of crusts and weak layers exist in our snowpack which are being stressed from this weeks loading, possibly resulting in a large avalanche. Choosing lower angle terrain is recommended today while noting surface cracking and rollerball activity.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-01-27
January 27, 2018 at 7:00

Natural and human triggered slides have recently occurred with continued snow and wind forming storm slabs that are likely to be human triggered. Fresh slabs will be thickest and most sensitive to triggering in wind loaded terrain. A variety of crusts and weak layers exist in our snowpack which are being stressed from this weeks loading, posssibly resulting in a very large avalanche. Choosing lower angle non-wind loaded terrain is recommended today with surface cracking/ audible collapses signs of instability.   

Swan Range
Click here to see the full advisory for 2018-01-27
January 27, 2018 at 6:59

Natural and human triggered slides have recently occurred with continued snow and wind forming storm slabs that are likely to be human triggered. Fresh slabs will be thickest and most sensitive to triggering in wind loaded terrain. A variety of crusts and weak layers exist in our snowpack which are being stressed from this weeks loading, posssibly resulting in a very large avalanche. Choosing lower angle non-wind loaded terrain is recommended today with surface cracking/ audible collapses signs of instability.   

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-01-27
January 27, 2018 at 6:59

Natural and human triggered slides have recently occurred with continued snow and wind forming storm slabs that are likely to be human triggered. Fresh slabs will be thickest and most sensitive to triggering in wind loaded terrain. A variety of crusts and weak layers exist in our snowpack which are being stressed from this weeks loading, posssibly resulting in a very large avalanche. Choosing lower angle non-wind loaded terrain is recommended today with surface cracking/ audible collapses signs of instability.   

Whitefish Range
Click here to see the full advisory for 2018-01-26
January 26, 2018 at 7:05

Dangerous avalanche conditions remain at upper elevations as snow and wind formed cohesive slabs stressing buried weak layers. Natural or human triggered avalanches are most likely on slopes steeper than 35 degrees at upper elevations. At mid to lower elevations, heightened avalanche conditions exist on steep slopes and gullies due to buried crust and surface hoar. Our variable and complex snowpack requires slope-specific evaluation and watch for surface cracking or audible collapses as signs of instability before skiing or riding.  

Swan Range
Click here to see the full advisory for 2018-01-26
January 26, 2018 at 7:05

Dangerous avalanche conditions remain at upper elevations as snow and wind formed cohesive slabs stressing buried weak layers. Natural or human triggered avalanches are most likely on slopes steeper than 35 degrees at upper elevations. At mid to lower elevations, heightened avalanche conditions exist on steep slopes and gullies due to buried crust and surface hoar. Our variable and complex snowpack requires slope-specific evaluation and watch for surface cracking or audible collapses as signs of instability before skiing or riding.  

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-01-26
January 26, 2018 at 7:05

Dangerous avalanche conditions remain at upper elevations as snow and wind formed cohesive slabs stressing buried weak layers. Natural or human triggered avalanches are most likely on slopes steeper than 35 degrees at upper elevations. At mid to lower elevations, heightened avalanche conditions exist on steep slopes and gullies due to buried crust and surface hoar. Our variable and complex snowpack requires slope-specific evaluation and watch for surface cracking or audible collapses as signs of instability before skiing or riding.  

Whitefish Range
Click here to see the full advisory for 2018-01-25
January 25, 2018 at 7:07

Dangerous avalanche conditions exist as dense snow and strong winds formed sensitive storm slabs stressing buried weak layers. Natural or human triggered storm slabs are most likely on slopes steeper than 35 degrees at mid and upper elevations. Diligent snowpack evaluation and cautious route-finding are essential in managing our complex snowpack. Generally safer conditions are found at lower elevations.

Swan Range
Click here to see the full advisory for 2018-01-25
January 25, 2018 at 7:06

Dangerous avalanche conditions exist as dense snow and strong winds formed sensitive storm slabs stressing buried weak layers. Natural or human triggered storm slabs are most likely on slopes steeper than 35 degrees at mid and upper elevations. Diligent snowpack evaluation and cautious route-finding are essential in managing our complex snowpack. Generally safer conditions are found at lower elevations.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-01-25
January 25, 2018 at 7:06

Dangerous avalanche conditions exist as dense snow and strong winds formed sensitive storm slabs stressing buried weak layers. Natural or human triggered storm slabs are most likely on slopes steeper than 35 degrees at mid and upper elevations. Diligent snowpack evaluation and cautious route-finding are essential in managing our complex snowpack. Generally safer conditions are found at lower elevations.

Whitefish Range
Click here to see the full advisory for 2018-01-24
January 24, 2018 at 7:00

New snowfall with rising temperatures will create dangerous avalanche conditions as the day progresses. Additional snow and wind expected today will add depth to new storm slabs and stress deeper instabilities. Choose conservative terrain and carefully evaluate the snowpack before committing to a slope.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-01-24
January 24, 2018 at 7:00

New snowfall with rising temperatures will create dangerous avalanche conditions as the day progresses. Additional snow and wind expected today will add depth to new storm slabs and stress deeper instabilities. Choose conservative terrain and carefully evaluate the snowpack before committing to a slope.

Whitefish Range
Click here to see the full advisory for 2018-01-24
January 24, 2018 at 7:00

New snowfall with rising temperatures will create dangerous avalanche conditions as the day progresses. Additional snow and wind expected today will add depth to new storm slabs and stress deeper instabilities. Choose conservative terrain and carefully evaluate the snowpack before committing to a slope.

Swan Range
Click here to see the full advisory for 2018-01-23
January 23, 2018 at 7:00

Snow pack conditions are highly variable across the advisory area. Recently observed instabilities include: near surface crust/facet combinations, isolated buried surface hoar, lingering windslabs, and in some areas deep instabilities formed early in the season.  Our variable and tricky snow pack warrants careful, slope-specific evaluation before skiing or riding on it.

Flathead Range and Glacier National Park
Click here to see the full advisory for 2018-01-23
January 23, 2018 at 7:00

Snow pack conditions are highly variable across the advisory area. Recently observed instabilities include: near surface crust/facet combinations, isolated buried surface hoar, lingering windslabs, and in some areas deep instabilities formed early in the season.  Our variable and tricky snow pack warrants careful, slope-specific evaluation before skiing or riding on it.

Whitefish Range
Click here to see the full advisory for 2018-01-23
January 23, 2018 at 7:00

Snow pack conditions are highly variable across the advisory area. Recently observed instabilities include: near surface crust/facet combinations, isolated buried surface hoar, lingering windslabs, and in some areas deep instabilities formed early in the season.  Our variable and tricky snow pack warrants careful, slope-specific evaluation before skiing or riding on it.

Swan Range

Pages

CSV