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Avalanche Forecast

Archived

Apr 4th, 2015–Apr 5th, 2015

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

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.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.