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Avalanche Forecast

Archived

Dec 3rd, 2014–Dec 4th, 2014

Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.
Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.
Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.

Regions

Northwest Inland.

We do not have enough information to issue danger ratings for this region at this time. Click on the forecast details tab to see a weather forecast and some snowpack data.

Confidence

Poor - Due to the number of field observations

Weather Forecast

Thursday: A mix of sun and cloud. The freezing level is at valley bottom and ridge winds are light from the E-NE. Friday: Increasing cloud with light precipitation possible late in the day. The freezing level remains near valley bottom. Winds increase to moderate or strong from the S-SE. Saturday: Light to moderate precipitation. The freezing level is around 500 m and ridge winds are strong from the SW.

Avalanche Summary

There are no new avalanche reports from the region. Please let us know what you're seeing out there. Email us at [email protected].

Snowpack Summary

As we begin our forecasting season, we are working with limited information from the field. This forecast is primarily based off weather station data and a few field observations.A report from the Ashman area describes a snow depth of 60 cm at 1100 metres elevation and 100 cm snow depth at 1500 metres elevation; 20-30 cm of facetted snow above a crust at treeline and 30 cm above the crust in the alpine in areas protected from the wind. Extensive wind effect has developed pockets of wind slab in the alpine and at treeline.

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.