Archived

Avalanche Forecast

Nov 21st, 2018–Nov 22nd, 2018

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

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

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

Regions: Glacier.

Early season conditions still exist! Slow down as you enter tree line and below. Rocks, fallen trees and open creeks are a few of the lurking hazards.

Weather Forecast

We'll start the day off with inverted temperatures again, but this will get pushed out as a cold front moves across the province. Today: sun and cloud, no precipitation, light to moderate winds from the south and the freezing level reaching 1800m with an alpine high of -2. 5cm of new snow tonight, 5cm Thursday and another 5cm on Friday.

Snowpack Summary

Surface hoar observed up to 10mm at tree line and in the alpine in sheltered locations. Unreactive wind slabs were observed in the Alpine on north aspects in certain drainages. Recent solar effect, left a thin sun crust on steep solar aspects in the alpine and treeline. Snow depths vary from 60cm at Rogers Pass, to 150-170cm in alpine areas.

Avalanche Summary

Yesterday there were no new avalanches observed in the highway corridor or reported from the backcountry. Several loose dry avalanches to size 1.5 were observed on Monday afternoon from steep, rocky, unsupported south facing terrain.

Confidence

Timing or intensity of solar radiation is uncertain

Avalanche Problems

Wind Slabs

45cm of storm snow has been redistributed by moderate Southerly winds and rests on buried surface hoar on northerly aspects and a suncrust on solar aspects. Human triggering is possible.

Use caution in lee areas. Recent wind loading have created pockets of wind slabs.Watch for areas of hard wind slab in steep alpine features.

Aspects: North, North East, East, North West.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2