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.
Date the advisory was published: | Forecast Region | |
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Click here to see the full advisory for 2016-02-15 |
February 15, 2016 at 7:00 An avalanche warning is in effect. Very dangerous conditions exist due to recent snow and moderate to strong winds combined with increasingly heavy, wet snow and rain at upper elevations today. The avalanche danger is HIGH above 6000 feet. Travel in avalanche terrain an run-out zones is not recommended. Below 6000 feet the avalanche danger is CONSIDERABLE. With additional precipitation today we could see over an inch of rain and heavy, wet snow above 6000 feet. |
Flathead Range and Glacier National Park |
Click here to see the full advisory for 2016-02-14 |
February 14, 2016 at 7:00 New snow and moderate to strong winds created fresh wind slabs. The avalanche danger is CONSIDERABLE on wind loaded slopes above 6000 feet. Human triggered avalanches are likely. The danger is MODERATE at mid elevations, and LOW below 5000 feet. Evaluate the snowpack and terrain carefully, and pay attention to temperatures warming more than expected. Persistent slab avalanches are possible where buried surface hoar and faceted snow near crusts 1 to 2.5 feet below the surface exist. |
Whitefish Range |
Click here to see the full advisory for 2016-02-14 |
February 14, 2016 at 7:00 New snow and moderate to strong winds created fresh wind slabs. The avalanche danger is CONSIDERABLE on wind loaded slopes above 6000 feet. Human triggered avalanches are likely. The danger is MODERATE at mid elevations, and LOW below 5000 feet. Evaluate the snowpack and terrain carefully, and pay attention to temperatures warming more than expected. Persistent slab avalanches are possible where buried surface hoar and faceted snow near crusts 1 to 2.5 feet below the surface exist. |
Swan Range |
Click here to see the full advisory for 2016-02-14 |
February 14, 2016 at 7:00 New snow and moderate to strong winds created fresh wind slabs. The avalanche danger is CONSIDERABLE on wind loaded slopes above 6000 feet. Human triggered avalanches are likely. The danger is MODERATE at mid elevations, and LOW below 5000 feet. Evaluate the snowpack and terrain carefully, and pay attention to temperatures warming more than expected. Persistent slab avalanches are possible where buried surface hoar and faceted snow near crusts 1 to 2.5 feet below the surface exist. |
Flathead Range and Glacier National Park |
Click here to see the full advisory for 2016-02-13 |
February 13, 2016 at 7:00 New snow at upper elevations accompanied by moderate to strong winds created fresh wind slabs. The avalanche danger is CONSIDERABLE on wind loaded slopes above 6000 feet. Human triggered avalanches are likely. The danger is MODERATE at mid elevations, and LOW below 5000 feet. Evaluate the snowpack and terrain carefully before committing to any slope. Persistent slab avalanches are possible where buried surface hoar and faceted snow near crusts 1 to 2 feet below the surface exist. |
Whitefish Range |
Click here to see the full advisory for 2016-02-13 |
February 13, 2016 at 7:00 New snow at upper elevations accompanied by moderate to strong winds created fresh wind slabs. The avalanche danger is CONSIDERABLE on wind loaded slopes above 6000 feet. Human triggered avalanches are likely. The danger is MODERATE at mid elevations, and LOW below 5000 feet. Evaluate the snowpack and terrain carefully before committing to any slope. Persistent slab avalanches are possible where buried surface hoar and faceted snow near crusts 1 to 2 feet below the surface exist. |
Swan Range |
Click here to see the full advisory for 2016-02-13 |
February 13, 2016 at 7:00 New snow at upper elevations accompanied by moderate to strong winds created fresh wind slabs. The avalanche danger is CONSIDERABLE on wind loaded slopes above 6000 feet. Human triggered avalanches are likely. The danger is MODERATE at mid elevations, and LOW below 5000 feet. Evaluate the snowpack and terrain carefully before committing to any slope. Persistent slab avalanches are possible where buried surface hoar and faceted snow near crusts 1 to 2 feet below the surface exist. |
Flathead Range and Glacier National Park |
Click here to see the full advisory for 2016-02-12 |
February 12, 2016 at 6:50 Rain up to 6000 feet and snow above will sustain heightened avalanche conditions. Human triggered wet loose avalanches and persistent slab avalanches are possible where buried surface hoar and faceted snow near crusts 1 to 2 feet below the surface exist. Pay attention to changing conditions as rain falls and snow levels rise today. Evaluate the snowpack and terrain carefully before committing to any slope. The danger is MODERATE at all elevations. |
Whitefish Range |
Click here to see the full advisory for 2016-02-12 |
February 12, 2016 at 6:50 Rain up to 6000 feet and snow above will sustain heightened avalanche conditions. Human triggered wet loose avalanches and persistent slab avalanches are possible where buried surface hoar and faceted snow near crusts 1 to 2 feet below the surface exist. Pay attention to changing conditions as rain falls and snow levels rise today. Evaluate the snowpack and terrain carefully before committing to any slope. The danger is MODERATE at all elevations. |
Swan Range |
Click here to see the full advisory for 2016-02-12 |
February 12, 2016 at 6:50 Rain up to 6000 feet and snow above will sustain heightened avalanche conditions. Human triggered wet loose avalanches and persistent slab avalanches are possible where buried surface hoar and faceted snow near crusts 1 to 2 feet below the surface exist. Pay attention to changing conditions as rain falls and snow levels rise today. Evaluate the snowpack and terrain carefully before committing to any slope. The danger is MODERATE at all elevations. |
Flathead Range and Glacier National Park |
Click here to see the full advisory for 2016-02-11 |
February 11, 2016 at 6:50 Today is a transition day as moisture moves into the area tonight with high snow levels. Cloud cover and a refreeze overnight should limit wet avalanches today. Though warming temperatures still keep the possibility alive. At upper elevations hard slabs above weak snow surrounding the late January rain crust and buried surface hoar 1-2 feet from the surface make it possible to trigger an avalanche. The avalanche danger is MODERATE above 6000 feet and LOW below this elevation. |
Whitefish Range |
Click here to see the full advisory for 2016-02-11 |
February 11, 2016 at 6:50 Today is a transition day as moisture moves into the area tonight with high snow levels. Cloud cover and a refreeze overnight should limit wet avalanches today. Though warming temperatures still keep the possibility alive. At upper elevations hard slabs above weak snow surrounding the late January rain crust and buried surface hoar 1-2 feet from the surface make it possible to trigger an avalanche. The avalanche danger is MODERATE above 6000 feet and LOW below this elevation. |
Swan Range |
Click here to see the full advisory for 2016-02-11 |
February 11, 2016 at 6:50 Today is a transition day as moisture moves into the area tonight with high snow levels. Cloud cover and a refreeze overnight should limit wet avalanches today. Though warming temperatures still keep the possibility alive. At upper elevations hard slabs above weak snow surrounding the late January rain crust and buried surface hoar 1-2 feet from the surface make it possible to trigger an avalanche. The avalanche danger is MODERATE above 6000 feet and LOW below this elevation. |
Flathead Range and Glacier National Park |
Click here to see the full advisory for 2016-02-10 |
February 10, 2016 at 6:57 The avalanche danger is MODERATE above 5000 feet. Mild temperatures overnight combined with continued warming today will weaken the surface snow. Human triggered avalanches are possible today. If temperatures and solar input increase beyond forecasted amounts the hazard could rise to CONSIDERABLE later today. It is important to remember that with wet snow avalanche problems aspect is the answer! As the day progresses and the snow surface becomes increasingly moist move from sunny aspects to a shaded aspect. |
Whitefish Range |
Click here to see the full advisory for 2016-02-10 |
February 10, 2016 at 6:57 The avalanche danger is MODERATE above 5000 feet. Mild temperatures overnight combined with continued warming today will weaken the surface snow. Human triggered avalanches are possible today. If temperatures and solar input increase beyond forecasted amounts the hazard could rise to CONSIDERABLE later today. It is important to remember that with wet snow avalanche problems aspect is the answer! As the day progresses and the snow surface becomes increasingly moist move from sunny aspects to a shaded aspect. |
Swan Range |
Click here to see the full advisory for 2016-02-10 |
February 10, 2016 at 6:57 The avalanche danger is MODERATE above 5000 feet. Mild temperatures overnight combined with continued warming today will weaken the surface snow. Human triggered avalanches are possible today. If temperatures and solar input increase beyond forecasted amounts the hazard could rise to CONSIDERABLE later today. It is important to remember that with wet snow avalanche problems aspect is the answer! As the day progresses and the snow surface becomes increasingly moist move from sunny aspects to a shaded aspect. |
Flathead Range and Glacier National Park |
Click here to see the full advisory for 2016-02-09 |
February 9, 2016 at 6:56 The avalanche danger will start as MODERATE but rise to CONSIDERABLE on sunny aspects above 5000 feet as the day progresses. The warmest upper elevation temperatures of the season, combined with solar input, will stress the surface snow with wet loose avalanches and cornice failures possible. Human triggered avalanches are likely today. Below 5000 feet the danger will start as LOW but rise to MODERATE as the snow surface warms. |
Whitefish Range |
Click here to see the full advisory for 2016-02-09 |
February 9, 2016 at 6:56 The avalanche danger will start as MODERATE but rise to CONSIDERABLE on sunny aspects above 5000 feet as the day progresses. The warmest upper elevation temperatures of the season, combined with solar input, will stress the surface snow with wet loose avalanches and cornice failures possible. Human triggered avalanches are likely today. Below 5000 feet the danger will start as LOW but rise to MODERATE as the snow surface warms. |
Swan Range |
Click here to see the full advisory for 2016-02-09 |
February 9, 2016 at 6:56 The avalanche danger will start as MODERATE but rise to CONSIDERABLE on sunny aspects above 5000 feet as the day progresses. The warmest upper elevation temperatures of the season, combined with solar input, will stress the surface snow with wet loose avalanches and cornice failures possible. Human triggered avalanches are likely today. Below 5000 feet the danger will start as LOW but rise to MODERATE as the snow surface warms. |
Flathead Range and Glacier National Park |
Click here to see the full advisory for 2016-02-08 |
February 8, 2016 at 7:06 The avalanche danger will rise to CONSIDERABLE on all slopes above 6000 feet. Warming temperatures combined with solar input will stress the cold dry surface snow with wet loose avalanches and cornice failures possible. Also, recent strong winds drifted snow and created wind slabs on leeward slopes and cross-loaded terrain features on multiple aspects. Human triggered avalanches are likely. All other terrain has a MODERATE danger. |
Whitefish Range |
Click here to see the full advisory for 2016-02-08 |
February 8, 2016 at 7:06 The avalanche danger will rise to CONSIDERABLE on all slopes above 6000 feet. Warming temperatures combined with solar input will stress the cold dry surface snow with wet loose avalanches and cornice failures possible. Also, recent strong winds drifted snow and created wind slabs on leeward slopes and cross-loaded terrain features on multiple aspects. Human triggered avalanches are likely. All other terrain has a MODERATE danger. |
Swan Range |
Click here to see the full advisory for 2016-02-08 |
February 8, 2016 at 7:06 The avalanche danger will rise to CONSIDERABLE on all slopes above 6000 feet. Warming temperatures combined with solar input will stress the cold dry surface snow with wet loose avalanches and cornice failures possible. Also, recent strong winds drifted snow and created wind slabs on leeward slopes and cross-loaded terrain features on multiple aspects. Human triggered avalanches are likely. All other terrain has a MODERATE danger. |
Flathead Range and Glacier National Park |
Click here to see the full advisory for 2016-02-07 |
February 7, 2016 at 7:00 The avalanche danger is CONSIDERABLE on windloaded slopes above 6000 feet. Strong winds drifted recent snow and created slabs on leeward slopes and cross-loaded terrain features on multiple aspects. Human triggered avalanches are likely. All other terrain has a MODERATE danger. Carefully evaluate the snowpack for reactive persistent slabs. Also, pay attention to lingering windslab instability in terrain that is not typically wind affected. |
Whitefish Range |
Click here to see the full advisory for 2016-02-07 |
February 7, 2016 at 7:00 The avalanche danger is CONSIDERABLE on windloaded slopes above 6000 feet. Strong winds drifted recent snow and created slabs on leeward slopes and cross-loaded terrain features on multiple aspects. Human triggered avalanches are likely. All other terrain has a MODERATE danger. Carefully evaluate the snowpack for reactive persistent slabs. Also, pay attention to lingering windslab instability in terrain that is not typically wind affected. |
Swan Range |
Click here to see the full advisory for 2016-02-07 |
February 7, 2016 at 7:00 The avalanche danger is CONSIDERABLE on windloaded slopes above 6000 feet. Strong winds drifted recent snow and created slabs on leeward slopes and cross-loaded terrain features on multiple aspects. Human triggered avalanches are likely. All other terrain has a MODERATE danger. Carefully evaluate the snowpack for reactive persistent slabs. Also, pay attention to lingering windslab instability in terrain that is not typically wind affected. |
Flathead Range and Glacier National Park |
Click here to see the full advisory for 2016-02-06 |
February 6, 2016 at 7:00 Strong winds and recent snow formed slabs over a layer of buried surface hoar. Additionally, settlement and warm temperatures likely formed a cohesive slab in more protected areas. The avalanche danger is CONSIDERABLE above 5000 ft. Human triggered avalanches are likely and dangerous conditions exist particularly in wind loaded terrain. The added load also stresses deeper weak layers surrounding a variety of crusts in the snowpack. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential. |
Swan Range |
Click here to see the full advisory for 2016-02-06 |
February 6, 2016 at 7:00 Strong winds and recent snow formed slabs over a layer of buried surface hoar. Additionally, settlement and warm temperatures likely formed a cohesive slab in more protected areas. The avalanche danger is CONSIDERABLE above 5000 ft. Human triggered avalanches are likely and dangerous conditions exist particularly in wind loaded terrain. The added load also stresses deeper weak layers surrounding a variety of crusts in the snowpack. 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 2016-02-06 |
February 6, 2016 at 7:00 Strong winds and recent snow formed slabs over a layer of buried surface hoar. Additionally, settlement and warm temperatures likely formed a cohesive slab in more protected areas. The avalanche danger is CONSIDERABLE above 5000 ft. Human triggered avalanches are likely and dangerous conditions exist particularly in wind loaded terrain. The added load also stresses deeper weak layers surrounding a variety of crusts in the snowpack. Careful snowpack evaluation, cautious route-finding, and conservative decision making are essential. |
Whitefish Range |
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 2016-02-05 |
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. |
Flathead Range and Glacier National Park |