Archived

Avalanche Forecast

Dec 8th, 2018–Dec 9th, 2018

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

Alpine

4: High

The avalanche danger rating in the alpine will be high

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: South Coast.

Snowfall accumulation will increase through the day. If totals exceed 25cm, avalanche hazard will be HIGH.

Confidence

Moderate - Intensity of incoming weather systems is uncertain

Weather Forecast

SATURDAY NIGHT: Cloudy with isolated showers / Alpine temperature: Low +2C / Moderate southeast ridge wind / Freezing level 1400mSUNDAY: Heavy rain with snow at upper elevations / Precipitation: 40-60mm / Alpine temperature: High +4C / Moderate gusting to strong south ridge wind / Freezing level up to 1800mMONDAY: Flurries / Accumulation: 5-15 cm / Alpine temperature: High +1C / Moderate south ridge wind / Freezing levels dropping to 1200mTUESDAY: Snow / Accumulation: 25-35 cm / Alpine temperature: High +1C / Light gusting moderate south ridge wind / Freezing level 1100m

Avalanche Summary

No avalanches have been reported in the region. Please submit any observations you have to the Mountain Information Network here.

Snowpack Summary

The snowpack has been below threshold depth for avalanches in the North Shore mountains and terrain below 1500m elevation. Incoming snow is not expected to bond well with a recently formed crust.In alpine areas near Squamish, up to of 70cm settled snow is on the ground. In these areas, a crust is lower in the snowpack, however it is now suspected to be well bonded to the overlying storm snow.

Avalanche Problems

Storm Slabs

Sunday's storm starts warm and cools through the day. Storms slabs will develop as snowfall accumulates. This new snow is not expected to bond well with the old surface and by late afternoon, natural avalanches are possible.

Watch for whumpfing, hollow sounds, shooting cracks or recent avalanches.Be alert to conditions changing through the day.Avoid avalanche terrain during periods of heavy loading from new snow, wind, or rain.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 2