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Archived

Avalanche Forecast

Dec 18th, 2023–Dec 19th, 2023
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
1: Low
The avalanche danger rating in the alpine will be low
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
1: Low
The avalanche danger rating in the alpine will be low
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Back off steep slopes when the snow surface feels wet. Wet loose avalanches are possible due to sustained high freezing levels and rain.

New wind slab could form in the alpine.

Confidence

Moderate

Avalanche Summary

No recent avalanches have been reported in this region.

If you do head into the backcountry please submit any observations and or photos on the Mountain Information Network.

Snowpack Summary

New precipitation could fall as snow in the alpine and upper treeline. This new snow could form wind slab near ridge crests in the alpine. Below treeline the snow surface will likely be moist.

The mid and lower snowpack is made up of a series of crusts and rounded grains. The snowpack is generally well consolidated.

Overall, the snow depth remains shallow, creating challenging travel conditions and hiding early season hazards just below the snow surface.

 

Weather Summary

Monday Night

Cloudy with 15 to 25 mm of mixed precipitation expected, southeast alpine wind 20 to 40 km/h, freezing level around 2300 m.

Tuesday

Cloudy with 5 to 20 mm of mixed precipitation expected, southeast alpine wind 20 to 40 km/h, freezing level around 2500 m.

Wednesday

Mostly cloudy with up to 5 mm of mixed precipitation expected, southeast alpine wind 10 to 30 km/h, freezing level around 2200 m.

Thursday

A mix of sun and cloud with light rain possible, southeast alpine wind 20 to 50 km/h, freezing level around 2100 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • The more the snow feels like a slurpy, the more likely loose wet avalanches will become.
  • Watch for wind-loaded pockets especially around ridgecrest and in extreme terrain.
  • Keep in mind that wet avalanches can be destructive due to their high density.
  • Be cautious of buried obstacles especially below treeline.

Avalanche Problems

Loose Wet

With sustained high freezing levels wet loose avalanches are possible on steep slopes at all elevations. These avalanches will be more likely at upper elevations where new snow could get rained on.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 1.5

Wind Slabs

rider triggerable wind slab could form near ridge crests in the alpine where new precipitation may have fallen as snow.

Aspects: North, North East, West, North West.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 2