• Backcountry Avalanche Forecast
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Mon, Dec 6, 2021 at 7:02 AM
Issued by: Mike Cooperstein

Monday

 

Tuesday

Low (1) Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features.   Moderate (2) Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully.
Low (1) Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features.   Moderate (2) Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully.
Low (1) Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features.   Low (1) Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features.
  Danger Scale

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Summary

Most slopes don't have enough snow or lack the requisite slab for dangerous avalanches. There is a small chance you can trigger an avalanche in very steep terrain on north, northeast, and east-facing slopes in the alpine. If you are traveling in above treeline areas, look for and avoid spots where you see signs of previous wind-loading like fat pillows of snow or a smooth, hard, hollow-sounding snow surface.

A storm moves through on Monday night and lingers through Tuesday. This new snow will fall on a very weak snow surface, especially on northerly and easterly-facing slopes, and avalanches will grow in size and be easier to trigger in these areas. Pay attention to changing conditions on Tuesday.

 
Weather Forecast for 11,000ft Issued Mon, Dec 6, 2021 at 12:27 PM by Mike Cooperstein Statewide Weather Forecast
  Monday Night Tuesday Tuesday Night
Temperature (ºF) 15 to 20 23 to 28 13 to 18
Wind Speed (mph) 20 to 30 15 to 25 10 to 20
Wind Direction W W W
Sky Cover Overcast Mostly Cloudy Partly Cloudy
Snow (in) 1 to 3 0 to 2 0

Archived Forecasts

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Mon, Dec 6, 2021 at 7:26 AM
Issued by: Mike Cooperstein Statewide Weather Forecast  

The avalanche danger will increase across the Northern Mountains on Tuesday as a weak shortwave trough moves through the state. The old snow surface is weak and won't handle much load. The most dangerous slopes will be north, northeast, and east-facing slopes near and above treeline, where the old snow is the weakest. If you plan to travel in the mountains over the next few days, be aware that conditions have changed. Places you could safely travel since the beginning of the season will no longer be safe. 

Other aspects generally don't have enough snow or have such spotty snow cover that a few inches of snow, even with some wind, won't do much to change the danger on those aspects on Tuesday. However, a stronger storm is forecast for Thursday into Friday, and right now, this one looks strong enough to cause more widespread avalanche problems. Snowfall amounts should be enough to create dangerous avalanche conditions in the areas that receive the most snow. Check back frequently over the next few days for the most up-to-date avalanche conditions. 


  • Looking at snow coverage on northeast through southeast aspects near the treeline and above on Bald Mountain in the Gore Range. December 2, 2021 (full)
  • NE aspect above treeline, just north of Bald Mountain in the Gore Range. December 2, 2021 (full)
  • Wind-drifted east-facing slope near Jones Pass. Front Range Zone December 2, 2021 (full)
  • Jones Pass, E aspect above treeline. Overall weak snow throughout the snowpack. Front Range Zone December 2, 2021 (full)

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Five Day Trend

Friday

Saturday

Sunday

Today

Tomorrow

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  • No Rating
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    Low
  • 2
    Moderate
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    Considerable
  • 4
    High
  • 5
    Extreme
Avalanche Observations
No relevant backcountry observations found for this forecast

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Field Reports
Report Date Observer Snowpack Obs Avalanches Media
View Sun Dec 5 - No No Yes (4)
View Fri Dec 3 Ian Fowler No No Yes (4)

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Weather Observations
Station Date Time Temperature Relative Humidity Wind Speed Wind Direction Max Gust 24 Hr Snow
A-basin Sa-summit Mon Dec 6 6:00 PM 10 93 14 251 26 -

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