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Archived

Avalanche Forecast

Dec 30th, 2023–Dec 31st, 2023
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
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
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

Adopt a conservative approach, while the reactivity and depth of problematic surface hoar layers vary across the region.

Confidence

Moderate

Avalanche Summary

No recent avalanches have been reported in the region, however there are currently very few field observations.

Last weekend, there were a few reports of natural and skier-triggered avalanches, likely sliding on a layer of buried surface hoar; mostly at treeline and up to size 2.

If you go out in the backcountry, please consider sharing your observations on the Mountain Information Network (MIN).

Snowpack Summary

Various wind-affected surfaces in exposed alpine and treeline terrain. Settled powder may still exist in wind-sheltered terrain. Below treeline, a fresh crust has formed either at or near the surface.

The mid-pack contains several layers of note; a layer of surface hoar down 30 to 50 cm, a significant crust from the early December rain event down around 60 cm, and a layer of surface hoar down 70 to 120 cm.

Snowpack depth throughout this region is highly variable and as a result, the depths of the above-mentioned layers are approximate and could be different than what you find in your riding area.

Check out this recent MIN report detailing the current snow conditions in the Pine Pass area.

Weather Summary

Saturday Night

Increasing cloud with no precipitation, southwest alpine winds 20 to 50 km/h, treeline temperature -2 °C, freezing level 1500 m and dropping.

Sunday

Clouds clearing through the day with isolated flurries, southwest alpine winds 20 to 40 km/h, treeline temperature -3 °C.

Monday

Mostly cloudy with isolated flurries, southwest alpine winds 20 to 30 km/h, treeline temperature -4 °C.

Tuesday

Mix of sun and cloud with no precipitation, southwest alpine winds 10 to 30 km/h, treeline temperature -4 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Surface hoar distribution is highly variable. Avoid generalizing your observations.
  • Avoid freshly wind loaded features, especially near ridge crests, roll-overs and in steep terrain.
  • Start with conservative lines and watch for clues of instability.

Avalanche Problems

Persistent Slabs

Buried surface hoar is of greatest concern around treeline elevations, in areas where a supportive crust doesn't exist above it.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1.5 - 3

Wind Slabs

Wind slabs should become less reactive as temperatures drop, tighten the upper snowpack after the recent warming event.

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

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2