Archived

Avalanche Forecast

Nov 23rd, 2017–Nov 24th, 2017

Alpine

3: Considerable

The avalanche danger rating in the alpine will be considerable

Treeline

3: Considerable

The avalanche danger rating at treeline will be considerable

Below Treeline

2: Moderate

The avalanche danger rating below treeline will be moderate

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

2: Moderate

The avalanche danger rating below treeline will be moderate

Alpine

3: Considerable

The avalanche danger rating in the alpine will be considerable

Treeline

3: Considerable

The avalanche danger rating at treeline will be considerable

Below Treeline

2: Moderate

The avalanche danger rating below treeline will be moderate

Regions: South Coast Inland.

Limited field observations are contributing to low forecast confidence. Friday's rating is biased to the south of the region where new snow has been accumulating rapidly.

Confidence

Low - Due to the number of field observations

Weather Forecast

Friday: Scattered flurries bringing about 5-10 cm of new snow. Strong to extreme southwest winds. Freezing level to about 1300 metres with alpine temperatures of around -3 to -1. Saturday: Cloudy with isolated flurries and a trace of new snow. Moderate southeast winds. Freezing level to 1600 metres with alpine temperatures of -2 to 0.Sunday: 20-30 cm of new snow to upper elevations, with rain below about 1800 metres. Strong south winds. Freezing level to 2200 metres and alpine temperatures around -1 to +1.

Avalanche Summary

No recent avalanches have been reported, however touchy new storm slabs have developed at upper elevations over the course of Thursday's continued stormy weather. Please post your observations to the Mountain Information Network. (MIN)

Snowpack Summary

Although recent heavy rain has saturated the upper snowpack throughout the region, a fresh cover of wind affected new snow has been forming storm slabs at all elevations in the south of the region. While limited field observations have led to uncertainty in the composition of the mid and lower snowpack, moist snow is expected to be dominant throughout the snowpack.

Avalanche Problems

Storm Slabs

Touchy new storm slabs have been forming on the surface as rain transitioned to snow over the course of the storm. The most recent and most rapid loading has occurred in the south of the region.

Use caution in lee areas. Recent snowfall mixed with wind loading has created storm slabs.The new snow will require several days to settle and stabilize.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 2

Loose Wet

Continued potential for loose wet avalanches exists where the surface has been saturated with rain and at lower elevations where new snow is moist.

Avoid exposure to terrain traps where the consequences of a small avalanche could be serious.Be cautious of sluffing in steep terrain, particularly where the debris flows into terrain traps.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2