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Archived

Avalanche Forecast

Apr 3rd, 2019–Apr 4th, 2019
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
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
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
3: Considerable
The avalanche danger rating below treeline will be considerable

Regions: Northwest Coastal.

Wet and snowy weather is approaching. Avalanche danger will increase as new snow accumulates and is redistributed by wind.

Confidence

Moderate - Intensity of incoming weather systems is uncertain

Weather Forecast

WEDNESDAY NIGHT - Cloudy with clear periods / southwest wind, 25-35 km/h / alpine low temperature -5 C / freezing level 500 m THURSDAY - Flurries, 10-15 cm accumulation by end of day / south wind, 25 gusting to 40 km/h / alpine high temperature 0 C / freezing level 1000 mFRIDAY - Wet flurries, 7-12 cm accumulation / south-southeast wind, 20-45 km/h / alpine high temperature +2 C / freezing level 1500 mSATURDAY - Snow, 10-30 cm accumulation / south-southeast wind, 20 gusting up to 100 km/h / alpine high temperature 0 C / freezing level 1300 m

Avalanche Summary

Last Friday, there were reports of a few size 2 loose wet and wet slab avalanches on southerly aspects. The likelihood of loose wet avalanches on sun-affected slopes will increase throughout the day as the sun comes out and temperatures rise.

Snowpack Summary

Sun exposed slopes in the alpine and on all aspects at treeline and below have become moist to wet during the heat of the day. In these areas spring conditions are in effect; the avalanche hazard will fluctuate greatly depending on the strength of the overnight freeze and how quickly the snowpack is warmed up each day. Dry snow may remain on north-facing slopes in the alpine. In these locations, 50-100 cm of snow sits on a layer of facets (sugary snow) that was buried around March 10th.

Avalanche Problems

Wind Slabs

Up to 15 cm snow is forecasted to accumulate by the end of Thursday along with southerly winds gusting to 45 km/h. Expect thin wind slab development at ridgetop and lee terrain.
Be cautious of sluffing in steep terrain.Be careful with wind loaded pockets, especially near ridge crests and roll-overs.Use extra caution on slopes if the snow is moist or wet.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 1.5