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Archived

Avalanche Forecast

Dec 21st, 2023–Dec 22nd, 2023
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Choose mellow slopes and carefully assess conditions as you gain elevation.

Where new snow is over 20 cm deep, storm slabs are likely to avalanche under the weight of a human.

Confidence

Moderate

Avalanche Summary

No new avalanches were reported before 4pm on Thursday.

If you do head into the backcountry please consider submitting observations and/or photos on the Mountain Information Network.

Snowpack Summary

Moderate snow and rainfall is arriving with strong southwest wind and cooling temperatures. Expect the wind to strip south and west facing ridges down to frozen crusts, and form deeper, more reactive slabs on north and east facing slopes.

In terrain where more than 20 cm of storm snow has accumulated, storm slabs are likely to avalanche under the weight of a human. Below treeline, you'll likely find dirt, or shallow, heavy, moist or wet snow.

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

Thursday Night

Cloudy. Light rain expected, 5 cm of snow above 1500 m, possibly more around Powell River. Moderate to strong south or southwest ridgetop wind. Treeline temperature around 0 °C.

Friday

Mostly cloudy. 15-25 cm of new snow expected above 750 m. Moderate to strong west or southwest ridgetop wind. Treeline low around -4°C.

Saturday

Mostly cloudy. Trace of snow expected. . Treeline temperature around -5 °C. Freezing level around 500 m. Light southwest ridgetop wind

Sunday

Partly cloudy. No new snow expected. Treeline temperature around 1 °C. Freezing level rising to 1750-2250 m, possible temperature inversion. Strong south ridgetop wind.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for changing conditions today, storm slabs may become increasingly reactive.
  • Be careful to keep storm day fever from luring you out into bigger terrain features.
  • Be cautious of buried obstacles especially below treeline.

Avalanche Problems

Storm Slabs

Rider triggerable storm slabs are likely forming around treeline and above, where new snow is falling on terrain that was already at threshold for avalanches.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 2.5