Archived

Avalanche Forecast

Apr 4th, 2015–Apr 5th, 2015

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: Northwest Inland.

Use caution on wind loaded features. Solar aspects may become reactive in the afternoon.If you have observations you'd like to share with other riders, click here.

Confidence

Fair - Due to the number and quality of field observations

Weather Forecast

The last of the Pacific low off the coast will send 15 to 20cm of snow to the upper elevations this evening, tapering off early Sunday morning, and drying out for the beginning of the week.. Mostly light and gusty south easterly alpine winds are expected throughout the forecast period. Daytime high will bring the freezing level to around 1200m for the next few days, then climbing to close to 2000m by mid week.

Avalanche Summary

No reports of avalanches from the past few days.

Snowpack Summary

Approximately 15-30 cm of dense storm snow overlies a variety of old surfaces. Recent strong winds have scoured windward slopes and loaded lee slopes. Persistent weaknesses buried in the upper snowpack may include hard crusts and/or facets, although not much is known about the reactivity or spatial distribution of these layers. At the base of the snowpack, weak facets may be found. Cornices are large and potentially fragile. Unpredictable, full-depth glide avalanches are also a concern on low elevation slopes with smooth ground cover (grassy slopes, rock slabs, etc.) where large cracks have formed from the snowpack slipping on the ground.

Avalanche Problems

Wind Slabs

In addition to already existing wind slabs, incoming precipitation may build another set of slabs.

Be cautious as you transition into wind affected terrain.>Highmark or enter your line well below ridge crests to avoid wind loaded pillows.>Minimize overhead exposure; avalanches triggered by windloading may reach run out zones.>

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 4