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Whistler Backcountry Avalanche Advisory

Issued: Monday March 25, 2019 5:07pm

Avalanche Summary

No avalanche activity was reported on Sunday.

In the far north of the region on Friday and Saturday loose wet avalanche activity to size 2 was reported on solar aspects. Sporadic natural slab avalanches were also reported in the alpine and treeline, but no activity was reported from north aspects. Very little activity was reported from areas closer to Whistler.

Snowpack Summary

The new snow might form wind slabs in the alpine and is overlying a variety of snow layers. On higher north aspects above 2000 m you may find some dry, faceted snow. Some of this has been redistributed by southwesterly and northerly winds which may have formed isolated old wind slabs. There are still a handful of melt/freeze crusts, surface hoar and facets in the upper snowpack, but all of these layers appear to have gone dormant for the time being. The snowpack at mid and upper elevations is expected to continue to gain strength as we enter a period of consecutive nights with below freezing temperatures.

Weather Forecast

MONDAY NIGHT: 10-20 cm overnight, moderate to strong Southerly winds, freezing level at 1200 m.

TUESDAY: Cloudy with light snow fall, accumulation up to 10 cm, moderate to strong southwest winds, alpine temperature -6 C, freezing level at 1300 m.

WEDNESDAY: Clear, moderate east winds, alpine temperature -4 C, freezing level at 1700 m.

THURSDAY: Mix of sun and clouds, light east winds, alpine temperatures of -4 C, freezing level at 1900 m.

Advisory for Tuesday:
Advisory 3-Day Overview:
 
Tuesday
Wednesday
Thursday
Alpine
Moderate
Moderate
Moderate
Treeline
Moderate
Moderate
Moderate
Below Treeline
Low
Moderate
Moderate
 
Tuesday
Alpine
Moderate
Treeline
Moderate
Below Treeline
Low

 
Wednesday
Alpine
Moderate
Treeline
Moderate
Below Treeline
Moderate

 
Thursday
Alpine
Moderate
Treeline
Moderate
Below Treeline
Moderate


Current Dangers

Wind Slabs

With new snow and moderate to strong Southerly winds we are expecting wind slabs to form, especially at higher elevations where snow accumulations are higher and winds are stronger.

What Elevations?

What Aspects?

Chances of Avalanche?

Expected Size?




Forecast provided by Avalanche Canada.

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