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Avalanche Forecast

Dec 3rd, 2019–Dec 4th, 2019
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
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
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: South Coast Inland.

Higher elevation terrain may be accumulating enough snow for dangerous avalanche conditions.

Confidence

Moderate - Uncertainty is due to the timing, track, & intensity of the incoming weather system.

Weather Forecast

TUESDAY NIGHT: 10-15 cm of snow, 60 km/h wind from the west, snow line around 1000 m in the north and 1200 m in the south

WEDNESDAY: Clearing in northern parts of the region and flurries continue with another 10 cm of snow or rain in southern parts of the region, light wind from the northwest, alpine temperatures drop to -5 C.

THURSDAY: Mix of sun and cloud, light wind from the southwest, alpine high temperatures around -5 C.

FRIDAY: Cloudy, 40 km/h wind from the southwest, alpine high temperatures around -2 C.

Avalanche Summary

Minimal avalanche activity has been reported over the past week as the snowpack is generally thin and the weather has been benign. Some parts of the region could receive enough new snow over the next few days to form slabs at higher elevations. The greatest concern will be in wind affected terrain and where the snow falls onto smooth surfaces (such as glaciers, rock slabs, and areas where there is already enough snow to cover rocks and trees).

Snowpack Summary

Less snow will make its way into the South Coast Inland region than areas closer to the coast. A total of 15-30 cm of fresh snow is possible by Wednesday afternoon, with deeper deposits in wind affected terrain. Even with this new snow, snowpack depths will remain quite thin throughout the region. Current snowpack depths are around 50 cm at upper treeline elevations, with many rocks and trees sticking out at lower elevations. In the alpine you can find slightly deeper pockets where wind has formed hard wind slabs.

Avalanche Problems

Storm Slabs

As new snow accumulates on expect storm slabs to build at upper elevations, especially on slopes that have been loaded by the wind.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2