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Archived

Avalanche Forecast

Dec 9th, 2015–Dec 10th, 2015
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
3: Considerable
The avalanche danger rating below treeline will be considerable
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
3: Considerable
The avalanche danger rating below treeline will be considerable
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
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: Little Yoho.

Storm snow amounts are creeping up. Be mindful that surface hoar exists in specific areas at and below treeline. Be inquisitive and look for this layer.

Weather Forecast

Intermittent flurries are expected for the next few days. Accumulations will be low, amounting to 10cm ish by Friday. Another storm is possible on Saturday but the outlook is quite uncertain.

Snowpack Summary

Up to 30cm of storm snow now overlies the Dec 3rd interface of surface hoar, suncrust and surface facets. The Surface hoar up to 20mm exists up to 1800m in the Emerald Lake area. Above 1800m, due S to SW facing terrain a suncrust exists and other aspects are soft facets or wind hammered snow.

Avalanche Summary

No new avalanches were observed or reported.

Confidence

Avalanche Problems

Wind Slabs

Strong wind today and new snow has started to create new wind slabs in lee areas in the alpine. These wind-slabs are expected to be touchy.

Aspects: North, North East, East.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 2

Storm Slabs

The storm snow has reached critical threshold (~30cm) on top of the Dec 3 surface. The trick is, it is located in sporadic locations across the forecast region. Be increasingly suspicious of steep open glades on shaded aspects at treeline and below.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 3