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Archived

Avalanche Forecast

Jan 3rd, 2019–Jan 4th, 2019
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
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
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: South Coast.

Rain and snow will add load and stress the snowpack. Give the snowpack time to stabilize.

Confidence

Low - Intensity of incoming weather systems is uncertain

Weather Forecast

THURSDAY NIGHT: Heavy rain, 35-40 mm. Strong southwest wind with extreme gusts. Freezing level 2000 m..FRIDAY: Snow and rain mix, 15-25 cm snow. Moderate southwest wind with strong to extreme gusts. Freezing level dropping to 1400 m through the day.SATURDAY: Wet flurries, 10-15 cm snow. Moderate southeast wind gusting to strong. Freezing level 1000 m.SUNDAY: Flurries, 10 cm snow. South wind light gusting to strong. Freezing level 700 m.

Avalanche Summary

No avalanches have been reported in the region. Please submit any observations you have to the Mountain Information Network here.

Snowpack Summary

Fresh snow overnight Wednesday turned to a snow/rain mix on Thursday accompanied with strong winds and high freezing levels. More precipitation is expected overnight Thursday as freezing levels drop. The fluctuation freezing level makes it hard to predict the rain/snow mix and how the new storm snow is bonding to the old surface. Under the new new snow is a widespread crust that extends at least to 1500 m elevation. At the highest elevations in the north of the region near Squamish, there could be a weak layer of feathery surface hoar roughly 50 cm below the new snow. Otherwise, the lower snowpack is well-settled.

Avalanche Problems

Storm Slabs

The combination of intense snowfall, heavy rain, and extreme wind will cause large and widespread storm slab avalanches.
Avoid all avalanche terrain during periods of heavy loading from new snow, wind, or rain.Avoid freshly wind loaded features and overhead hazards like cornices.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Very Likely

Expected Size: 1.5 - 3