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Avalanche Forecast

Apr 8th, 2019–Apr 9th, 2019
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
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: South Coast Inland.

Wind has developed slabs around ridges and in lee terrain at upper elevations. If the sun comes out and temperatures rise, the likelihood of loose wet avalanches will increase as the snowpack warms, especially in areas with fresh snow.

Confidence

-

Weather Forecast

MONDAY NIGHT: Flurries, 5-15 cm / west wind, 10-30 km/h / alpine low temperature -3 C / freezing level 1700 mTUESDAY: Near the Duffey a mix of sun, cloud, and isolated flurries; and closer to the Coq, scattered flurries, up to 10 cm accumulation / west wind, 10-20 km/h / alpine high temperature -1 C / freezing level 2000 mWEDNESDAY: Flurries, 5-10 cm snow / southwest wind, 15 gusting to 45 km/h / alpine high temperature -4 C / freezing level 1500 mTHURSDAY: Sun, cloud, and isolated flurries, trace to 5 cm / alpine high temperature -1 C / freezing level 1800 m

Avalanche Summary

A natural avalanche cycle to size 2 likely occurred overnight Saturday; slab avalanches to size 2 were observed on north-northeasterly aspects around ridgetops and in recently loaded lee features on Sunday. Explosives also triggered small (size 1-1.5) wind slab avalanches on north to west aspects about 2000 m.On Saturday, small wind slab pockets were reactive to skiers in cross-loaded features at treeline near the Duffey.The likelihood of triggering loose wet avalanches will increase on if the sun shines, especially in areas with fresh snow.

Snowpack Summary

Southwesterly winds have redistributed recent snowfall, forming slabs at ridgetop and in immediate lee terrain. This covers a melt-freeze crust on most slopes, and dry, faceted snow and isolated surface hoar and on high north-facing terrain.Warm temperatures during the day are moistening the snowpack up to 2000 m; snow is rapidly melting at lower elevations. With spring conditions, the avalanche hazard will fluctuate greatly depending on the strength of the overnight freeze and how quickly the snowpack is warmed up each day.

Avalanche Problems

Wind Slabs

Wind has redistributed recent snowfall at upper treeline and alpine elevations. Use caution around lee terrain features and steep, convex slopes.
Be careful with wind-loaded pockets, especially near ridge crests and roll-overs.Expect conditions to change with elevation.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 1.5

Loose Wet

The recent snow will moisten quickly on southerly aspects when the clouds clear. Loose wet avalanches can become dangerous quickly, so use added caution when the sun is out.
Avoid sun-exposed slopes and overhead exposure during periods of intense sun.Use extra caution on slopes if the snow is moist or wet.Minimize exposure to cornices as they can weaken with daytime heating.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 1.5