Archived

Avalanche Forecast

Nov 28th, 2017–Nov 29th, 2017

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

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

Regions: Sea To Sky.

Successive storms will result in elevated danger, particularly in exposed, windy locations. There's a chance it may start to snow heavily a little earlier than expected on Wednesday. If so, adjust your objectives accordingly.

Confidence

Moderate - Timing of incoming weather systems is uncertain

Weather Forecast

A series of storms is expected to bring further snow and wind to this region.Wednesday: Light snow during the day, getting heavier in the afternoon. Expect around 5 cm new snow during the day, then another 15-20 cm on Wednesday night. Freezing levels around 1100 m. Moderate westerly winds, becoming strong southwesterly later on.Thursday: 5 cm or so new snow. Freezing levels around 1000 m. Moderate southwesterly winds.Friday: 10-15 cm new snow. Freezing levels around 900 m. Strong southwesterly winds.

Avalanche Summary

Natural avalanches were reported up to size 2.5 on Sunday. Activity diminished on Monday following a drying and cooling trend, but is likely to pick up again, especially in steep, wind affected terrain for Tuesday.

Snowpack Summary

Approximately 20-30 cm new snow now sits on top of a rain crust (or multiple crusts) that formed during the recent wet weather. Strong winds have blown snow around in exposed areas creating drifts and scoured areas. Snowpack depths are typically around 140 cm in sheltered treeline locations, although deeper (and shallower) spots certainly exist on account of the strong winds.

Avalanche Problems

Storm Slabs

New storm slabs are building over a crust layer. This layer may slide easily, particularly on steep convex terrain or where the wind has blown it into more cohesive slabs.

The new snow will require several days to settle and stabilize.Avoid steep lee and cross-loaded features

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 2