Archived

Avalanche Forecast

Apr 16th, 2019–Apr 17th, 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

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: Sea To Sky.

Strong southwest wind may form new wind slabs up high.

Confidence

High -

Weather Forecast

TUESDAY NIGHT: Cloudy with light snowfall, accumulation 2 to 5 cm, moderate to strong southwest wind, alpine temperature -5 C, freezing level 1400 m.

WEDNESDAY: Cloudy with intermittent snowfall, accumulation 2 to 5 cm, moderate southwest wind, alpine temperature -4 C, freezing level 1500 m.

THURSDAY: Cloudy with flurries, accumulation 10 to 20 cm, light to moderate southwest wind, alpine temperature 0 C, freezing level 1600 m rising to 2400 m.

FRIDAY: Cloudy with rain switching to snow, accumulation 20 mm rain followed by 5 to 10 cm of snow, moderate southwest wind, alpine temperature 0 C, freezing level 2400 m dropping to 1500 m.

Avalanche Summary

Some small wind slabs were triggered naturally on Monday. Otherwise, small loose sluffs were triggered by skiers in the alpine.

Snowpack Summary

New wind slabs may from with around 5 to 10 cm of new snow and strong southwest wind. A melt-freeze crust or moist surface snow is expect below around 1500 m. The remainder of the snowpack is consolidated and strong. The snowpack is rapidly melting below treeline.

Avalanche Problems

Wind Slabs

Some more snow and strong southwest wind may form new wind slabs in lee terrain features. Use added caution when entering slopes adjacent to ridges.

Be careful with wind-loaded pockets, especially near ridge crests.
Expect conditions to change rapidly with aspect and elevation.
Use small slopes without consequence to test the bond of the new snow.

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

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 2