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 2017-04-08![]() |
April 8, 2017 at 6:51 Cool overnight temperatures have formed a thin surface crust at all elevations. This crust will weaken throughout the day as temperatures warm and especially if forecasted precipitation enters our area sooner than expected. At upper elevations there exists a layer of unconsolidated surface snow that is susceptible to triggering a larger wet loose avalanche. The avalanche danger is LOW. Pay attention to changing snow surface and weather conditions today while continuing to practice safe backcountry travel techniques.
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Whitefish Range |
Click here to see the full advisory for 2017-04-07![]() |
April 7, 2017 at 7:00 Heightened wet avalanche concerns exist due to continued warm temperatures and rain on recent, unconsolidated snow. The avalanche danger is MODERATE above 6000 feet where human triggered avalanches are possible. Pay attention to changing weather conditions today. More rain than anticipated could result in deeper instabilities and increase the potential for larger wet avalanches. Below 6000 feet the danger is LOW.
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Flathead Range and Glacier National Park |
Click here to see the full advisory for 2017-04-07![]() |
April 7, 2017 at 7:00 Heightened wet avalanche concerns exist due to continued warm temperatures and rain on recent, unconsolidated snow. The avalanche danger is MODERATE above 6000 feet where human triggered avalanches are possible. Pay attention to changing weather conditions today. More rain than anticipated could result in deeper instabilities and increase the potential for larger wet avalanches. Below 6000 feet the danger is LOW.
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Whitefish Range |
Click here to see the full advisory for 2017-04-07![]() |
April 7, 2017 at 7:00 Heightened wet avalanche concerns exist due to continued warm temperatures and rain on recent, unconsolidated snow. The avalanche danger is MODERATE above 6000 feet where human triggered avalanches are possible. Pay attention to changing weather conditions today. More rain than anticipated could result in deeper instabilities and increase the potential for larger wet avalanches. Below 6000 feet the danger is LOW.
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Swan Range |
Click here to see the full advisory for 2017-04-06![]() |
April 6, 2017 at 7:00 Warm temperatures with rain and snow showers today will raise the avalanche danger to MODERATE at all elevations. The warm temperatures and rain may weaken the surface snow, making it possible to trigger a loose wet avalanche. Pay attention to changing conditions. If the sun does make an appearance, expect it to increase instability.
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Flathead Range and Glacier National Park |
Click here to see the full advisory for 2017-04-06![]() |
April 6, 2017 at 7:00 Warm temperatures with rain and snow showers today will raise the avalanche danger to MODERATE at all elevations. The warm temperatures and rain may weaken the surface snow, making it possible to trigger a loose wet avalanche. Pay attention to changing conditions. If the sun does make an appearance, expect it to increase instability.
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Whitefish Range |
Click here to see the full advisory for 2017-04-06![]() |
April 6, 2017 at 7:00 Warm temperatures with rain and snow showers today will raise the avalanche danger to MODERATE at all elevations. The warm temperatures and rain may weaken the surface snow, making it possible to trigger a loose wet avalanche. Pay attention to changing conditions. If the sun does make an appearance, expect it to increase instability.
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Swan Range |
Click here to see the full advisory for 2017-04-05![]() |
April 5, 2017 at 7:00 Warm temperatures and clouds are forecasted for today. The avalanche danger will be LOW today at all elevations. The danger may rise to MODERATE if the sun does break through. Warm temperatures may weaken the surface snow, making it possible to trigger a loose wet avalanche. Pay attention to changing conditions. If the sun does make an appearance, expect it to enhance the impacts of the warm temperatures leading to increased instability.
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Flathead Range and Glacier National Park |
Click here to see the full advisory for 2017-04-05![]() |
April 5, 2017 at 7:00 Warm temperatures and clouds are forecasted for today. The avalanche danger will be LOW today at all elevations. The danger may rise to MODERATE if the sun does break through. Warm temperatures may weaken the surface snow, making it possible to trigger a loose wet avalanche. Pay attention to changing conditions. If the sun does make an appearance, expect it to enhance the impacts of the warm temperatures leading to increased instability.
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Whitefish Range |
Click here to see the full advisory for 2017-04-05![]() |
April 5, 2017 at 7:00 Warm temperatures and clouds are forecasted for today. The avalanche danger will be LOW today at all elevations. The danger may rise to MODERATE if the sun does break through. Warm temperatures may weaken the surface snow, making it possible to trigger a loose wet avalanche. Pay attention to changing conditions. If the sun does make an appearance, expect it to enhance the impacts of the warm temperatures leading to increased instability.
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Swan Range |
Click here to see the full advisory for 2017-04-04![]() |
April 4, 2017 at 7:00 Today we can expect clearing skies and above-freezing temperatures by this afternoon. The avalanche danger will begin at LOW but then rise to MODERATE at all elevations as the day progresses. Sunshine and warm temperatures will weaken the surface snow, making it possible to trigger a loose wet avalanche. Pay attention to changing conditions and move to more shaded terrain if slopes facing the sun start to become unstable.
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Flathead Range and Glacier National Park |
Click here to see the full advisory for 2017-04-04![]() |
April 4, 2017 at 7:00 Today we can expect clearing skies and above-freezing temperatures by this afternoon. The avalanche danger will begin at LOW but then rise to MODERATE at all elevations as the day progresses. Sunshine and warm temperatures will weaken the surface snow, making it possible to trigger a loose wet avalanche. Pay attention to changing conditions and move to more shaded terrain if slopes facing the sun start to become unstable.
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Whitefish Range |
Click here to see the full advisory for 2017-04-04![]() |
April 4, 2017 at 7:00 Today we can expect clearing skies and above-freezing temperatures by this afternoon. The avalanche danger will begin at LOW but then rise to MODERATE at all elevations as the day progresses. Sunshine and warm temperatures will weaken the surface snow, making it possible to trigger a loose wet avalanche. Pay attention to changing conditions and move to more shaded terrain if slopes facing the sun start to become unstable.
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Swan Range |
Click here to see the full advisory for 2017-04-03![]() |
April 3, 2017 at 6:52 Light snow overnight and through today is being deposited onto a surface crust. Winds have and will transport this low density snow and form thin fresh wind slabs in areas favored by snowfall. The avalanche danger is LOW. Continue to practice safe travel techniques and evaluate all slopes that have been favored by new snow or wind loading. |
Flathead Range and Glacier National Park |
Click here to see the full advisory for 2017-04-03![]() |
April 3, 2017 at 6:52 Light snow overnight and through today is being deposited onto a surface crust. Winds have and will transport this low density snow and form thin fresh wind slabs in areas favored by snowfall. The avalanche danger is LOW. Continue to practice safe travel techniques and evaluate all slopes that have been favored by new snow or wind loading. |
Whitefish Range |
Click here to see the full advisory for 2017-04-03![]() |
April 3, 2017 at 6:52 Light snow overnight and through today is being deposited onto a surface crust. Winds have and will transport this low density snow and form thin fresh wind slabs in areas favored by snowfall. The avalanche danger is LOW. Continue to practice safe travel techniques and evaluate all slopes that have been favored by new snow or wind loading. |
Swan Range |
Click here to see the full advisory for 2017-04-02![]() |
April 2, 2017 at 6:48 Today's cloudy cool conditions will minimize natural loose wet avalanche activity but there remains a chance to trigger one of these slides. At upper elevations a thin surface crust caps a layer of unconsolidated snow. At low elevations the surface crust is unsupportable or non-existent. The avalanche danger is LOW. Pay attention to changing snow surface conditions and avoid consequential terrain if you or your machine start to sink below the snow surface into moist unconsolidated snow. |
Flathead Range and Glacier National Park |
Click here to see the full advisory for 2017-04-02![]() |
April 2, 2017 at 6:48 Today's cloudy cool conditions will minimize natural loose wet avalanche activity but there remains a chance to trigger one of these slides. At upper elevations a thin surface crust caps a layer of unconsolidated snow. At low elevations the surface crust is unsupportable or non-existent. The avalanche danger is LOW. Pay attention to changing snow surface conditions and avoid consequential terrain if you or your machine start to sink below the snow surface into moist unconsolidated snow. |
Whitefish Range |
Click here to see the full advisory for 2017-04-02![]() |
April 2, 2017 at 6:48 Today's cloudy cool conditions will minimize natural loose wet avalanche activity but there remains a chance to trigger one of these slides. At upper elevations a thin surface crust caps a layer of unconsolidated snow. At low elevations the surface crust is unsupportable or non-existent. The avalanche danger is LOW. Pay attention to changing snow surface conditions and avoid consequential terrain if you or your machine start to sink below the snow surface into moist unconsolidated snow. |
Swan Range |
Click here to see the full advisory for 2017-04-01![]() |
April 1, 2017 at 6:46 Overnight, a weak refreezing of the snow surface has resulted in another day with a loose wet avalanche problem. Recent new snow in the upper elevations has yet to consolidate and could be susceptible to triggering today. The avalanche danger is LOW. Pay attention to changing snow surface conditions and avoid consequential terrain if you or your machine start to sink below the snow surface into moist unconsolidated snow. |
Flathead Range and Glacier National Park |
Click here to see the full advisory for 2017-04-01![]() |
April 1, 2017 at 6:46 Overnight, a weak refreezing of the snow surface has resulted in another day with a loose wet avalanche problem. Recent new snow in the upper elevations has yet to consolidate and could be susceptible to triggering today. The avalanche danger is LOW. Pay attention to changing snow surface conditions and avoid consequential terrain if you or your machine start to sink below the snow surface into moist unconsolidated snow. |
Whitefish Range |
Click here to see the full advisory for 2017-04-01![]() |
April 1, 2017 at 6:46 Overnight, a weak refreezing of the snow surface has resulted in another day with a loose wet avalanche problem. Recent new snow in the upper elevations has yet to consolidate and could be susceptible to triggering today. The avalanche danger is LOW. Pay attention to changing snow surface conditions and avoid consequential terrain if you or your machine start to sink below the snow surface into moist unconsolidated snow. |
Swan Range |
Click here to see the full advisory for 2017-03-31![]() |
March 31, 2017 at 7:02 Today's danger will start out at LOW. As temperatures rise and the clouds break up, the avalanche danger will rise to CONSIDERABLE on sunny slopes above 6000 feet. The upper elevation snowfall from earlier this week has yet to be tested by the spring's powerful daytime warming and sunshine. As the sun heats the snow surface, move to shadier slopes. The danger will rise to MODERATE in the mid-elevations, where it will remain possible to trigger loose, wet avalanches. |
Flathead Range and Glacier National Park |
Click here to see the full advisory for 2017-03-31![]() |
March 31, 2017 at 7:02 Today's danger will start out at LOW. As temperatures rise and the clouds break up, the avalanche danger will rise to CONSIDERABLE on sunny slopes above 6000 feet. The upper elevation snowfall from earlier this week has yet to be tested by the spring's powerful daytime warming and sunshine. As the sun heats the snow surface, move to shadier slopes. The danger will rise to MODERATE in the mid-elevations, where it will remain possible to trigger loose, wet avalanches. |
Whitefish Range |
Click here to see the full advisory for 2017-03-31![]() |
March 31, 2017 at 7:02 Today's danger will start out at LOW. As temperatures rise and the clouds break up, the avalanche danger will rise to CONSIDERABLE on sunny slopes above 6000 feet. The upper elevation snowfall from earlier this week has yet to be tested by the spring's powerful daytime warming and sunshine. As the sun heats the snow surface, move to shadier slopes. The danger will rise to MODERATE in the mid-elevations, where it will remain possible to trigger loose, wet avalanches. |
Swan Range |
Click here to see the full advisory for 2017-03-30![]() |
March 30, 2017 at 5:35 In the past two days about a foot of snow fell above 6500 feet favoring the Swan and Whitefish Ranges. Temperatures warmed and formed a thin, upside down storm layer. Additionally, 20-40 mph winds during the storm added depth to recent wind slabs. The avalanche danger is CONSIDERABLE above 6000 feet. Carefully, evaluate the snowpack and make conservative terrain choices. The danger is MODERATE in the mid elevations where it will remain possible to trigger loose, wet avalanches.
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Flathead Range and Glacier National Park |
Click here to see the full advisory for 2017-03-30![]() |
March 30, 2017 at 5:35 In the past two days about a foot of snow fell above 6500 feet favoring the Swan and Whitefish Ranges. Temperatures warmed and formed a thin, upside down storm layer. Additionally, 20-40 mph winds during the storm added depth to recent wind slabs. The avalanche danger is CONSIDERABLE above 6000 feet. Carefully, evaluate the snowpack and make conservative terrain choices. The danger is MODERATE in the mid elevations where it will remain possible to trigger loose, wet avalanches.
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Whitefish Range |
Click here to see the full advisory for 2017-03-30![]() |
March 30, 2017 at 5:35 In the past two days about a foot of snow fell above 6500 feet favoring the Swan and Whitefish Ranges. Temperatures warmed and formed a thin, upside down storm layer. Additionally, 20-40 mph winds during the storm added depth to recent wind slabs. The avalanche danger is CONSIDERABLE above 6000 feet. Carefully, evaluate the snowpack and make conservative terrain choices. The danger is MODERATE in the mid elevations where it will remain possible to trigger loose, wet avalanches.
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Swan Range |
Click here to see the full advisory for 2017-03-29![]() |
March 29, 2017 at 7:00 Recently formed wind slabs will be slow to strengthen due to the smooth crust (sliding surface) they were formed on. A few inches of snow and continued wind today will thicken these slabs. The avalanche danger is MODERATE above 6000 feet. Carefully evaluate wind loaded terrain before committing to a slope. Below 6000 feet the danger is LOW, but will rise if we get rain to assist in breaking down the surface crust. |
Flathead Range and Glacier National Park |
Click here to see the full advisory for 2017-03-29![]() |
March 29, 2017 at 7:00 Recently formed wind slabs will be slow to strengthen due to the smooth crust (sliding surface) they were formed on. A few inches of snow and continued wind today will thicken these slabs. The avalanche danger is MODERATE above 6000 feet. Carefully evaluate wind loaded terrain before committing to a slope. Below 6000 feet the danger is LOW, but will rise if we get rain to assist in breaking down the surface crust. |
Whitefish Range |