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

2: Moderate

The avalanche danger rating at treeline will be moderate

Below Treeline

2: Moderate

The avalanche danger rating below treeline will be moderate

Regions: Northwest Inland.

A shift in 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 / west wind, 20-40 km/h / alpine low temperature -5 C / freezing level dropping to valley bottom THURSDAY - Cloudy with isolated flurries, up to 10 cm accumulation / south wind, 20 gusting to 45 km/h / alpine high temperature -1 C / freezing level 1400 m FRIDAY - Flurries, 10 cm accumulation / southeast wind, 20-35 km/h / alpine high temperature +1 C / freezing level 1700 mSATURDAY - Flurries, 5-10 cm accumulation / south wind, 30 gusting to 90 km/h / alpine high temperature +1 C / freezing level 1600 m

Avalanche Summary

There have been no recent avalanche observations in the forecast region.

Snowpack Summary

Sun exposed slopes in the alpine and 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 still be found on north-facing slopes in the alpine. At these locations, 30-50 cm of well settled snow overlies a layer of facets (sugary snow) that was buried around March 10th.

Avalanche Problems

Wind Slabs

Up to 10 cm snow is forecasted to accumulate by the end of Thursday along with westerly 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, North West.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 1.5