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Avalanche Forecast

Feb 9th, 2012–Feb 10th, 2012
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
1: Low
The avalanche danger rating below treeline will be low
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
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

Regions: South Coast.

Confidence

Good - -1

Weather Forecast

Overnight Thursday: Few flurries with amounts 2-5cm. Ridgetop winds 20km/hr from the SE with alpine temperatures -2. Freezing levels 1300m. Friday: Snow amounts up to 5cms. Freezing levels near 1700m. Ridgetop winds light from the SE, alpine temperatures steady -1. Saturday: A ridge builds Friday afternoon and persists through the weekend. This may bring scattered flurries early in the day Saturday, light ridgetop winds, and possibly sunny alpine skies.

Avalanche Summary

Glide crack activity up to size 2.5 has been reported in the Coquilhalla at treeline and below. Glide cracks are hard to predict, avoid riding in terrain below them. No other avalanche activity has been reported.

Snowpack Summary

Snow surface conditions are variable. Thin, breakable sun crusts have developed on steep solar aspects in the alpine. Melt freeze crusts exist at lower elevations on most aspects. At treeline and below treeline surface faceting and surface hoar growth (5mm) has formed; especially on shady aspects in sheltered locations. This may be a future layer of concern once buried. Additionally in the Coquilhalla hard wind slabs 5-15cm thick and have formed due to strong outflow winds. The Duffy Lake area and the Coquihalla hosts a well settled mid pack.

Avalanche Problems

Wind Slabs

Strong outflow winds over the past couple days have created stiff wind slabs on lee slopes. They may be stubborn, but could be reactive to rider triggers.

Aspects: North, North East, East.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 4

Cornices

Cornice fall may release slab a slab avalanche on the slope below.

Aspects: North, North East, East, South East.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 2 - 6