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Archived

Avalanche Forecast

Dec 25th, 2018–Dec 26th, 2018
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
2: Moderate
The avalanche danger rating below treeline will be moderate
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

Regions: South Coast.

Another coastal storm will blanket snow across the mountains on Wednesday. The snow and associated strong winds may form new slabs.

Confidence

Moderate - Timing, track, or intensity of incoming weather system is uncertain

Weather Forecast

TUESDAY NIGHT: Cloudy with light snowfall, accumulation 5 to 10 cm, freezing level 600 m.WEDNESDAY: Cloudy with snowfall, accumulation 10 to 20 cm, moderate to strong southwest winds, treeline temperature -2 C, freezing level 600 m.THURSDAY: Mostly sunny, light west winds, treeline temperature -3 C, freezing level 500 m.FRIDAY: Cloudy with light snowfall, accumulation 5 to 10 cm, strong southwest winds, treeline temperature -2 C, freezing level 500 m.

Avalanche Summary

No new avalanches were reported on Tuesday. Avalanche activity may increase on Wednesday with the incoming storm.

Snowpack Summary

New snow on Wednesday will fall on about 50 cm of recent snow, which sits on a thick melt-freeze crust. Reports indicate that the snow is bonding well to the crust. Strong winds on Wednesday may redistribute snow, producing wind slabs in lee terrain features. Snow depths increase substantially with higher elevations. Expect to find about 200 cm at treeline elevations.

Avalanche Problems

Wind Slabs

Snowfall on Wednesday will fall with strong southerly winds. Expect to find the thickest slabs in lee terrain features.
Cornices are large and unstable. Give cornices a wide berth.Use caution in lee areas. Recent wind loading have created wind slabs.

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

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 2