Avalog Join
Archived

Avalanche Forecast

Dec 29th, 2022–Dec 30th, 2022
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
4: High
The avalanche danger rating at treeline will be high
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
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

Regions: West Island.

New storm and wind slabs will build throughout the day. These new slabs likely won't bond well to the underlying crust. Avalanche terrain should be avoided.

Confidence

High

Avalanche Summary

Observations are limited in this region. We suspect that natural storm slab activity will occur on Friday.

Snowpack Summary

Up to 40cm of new snow has likely formed storm and wind slab at treeline and above as well as isolated features below treeline. The largest and most reactive slabs will be found on northerly aspects. A new crust likely extends from 1000m up to 1600m. Below 1000m the snow surface could still be moist.

Once again terrain below treeline has limited or no coverage.

Weather Summary

Thursday Night

Stormy with around 30mm of new precipitation . Moderate southeast winds and Freezing levels rising to 1400m.

Friday

Stormy with up to 70mm of new precipitation expected. Moderate to strong southwest winds and freezing levels around 1400m.

Saturday

Cloudy with light flurries bringing up to 5mm of new precipitation. Light to moderate westerly winds and freezing level around 1200m.

Sunday

Mostly cloudy with the possibility of light flurries bringing trace amounts of new snow. Light southerly winds and freezing levels around 1100m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid all avalanche terrain during periods of heavy snowfall.
  • Storm slab size and sensitivity to triggering will likely increase through the day.
  • Be alert to conditions that change with aspect and elevation.

Avalanche Problems

Storm Slabs

New snow and wind will form storm slabs throughout the day. The largest and most reactive slabs will likely be found on north and east aspects. Avalanches could be larger than expected due to the crust slabs will form over.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Certain

Expected Size: 1.5 - 3