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Archived

Avalanche Forecast

Mar 7th, 2015–Mar 8th, 2015
Alpine
1: Low
The avalanche danger rating in the alpine will be low
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
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
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: Cariboos.

Pacific moisture is forecast to slide down out of the Northwest over the next few days resulting in increased avalanche danger.

Confidence

Fair - Forecast snowfall amounts are uncertain on Monday

Weather Forecast

Cloudy overnight with moderate westerly winds and freezing levels down to valley bottoms. Winds becoming strong southwest on Sunday with light precipitation starting in the afternoon as freezing levels rise up to about 1600 metres. 5-10 cm of new snow combined with strong southwest winds by Monday morning. Expect heavier snowfall in the north and east of the region. Light snow (maybe another 3-5 cm) and moderate winds on Tuesday.

Avalanche Summary

Small (size 1-1.5) skier-triggered wind slabs have been reported in exposed alpine terrain, and loose snow sluffing in steep terrain.

Snowpack Summary

Variable recent storm snow totals across the region are generally in the 5-25 cm range. The snow surface varies with elevation and aspect with respect to sun and wind exposure, and includes dry new snow, loose facetted snow, wind slabs, and sun crusts. The mid-February crust is down around 10-30 cm where it isn't wind loaded or scoured. The late-Jan crust/surface hoar layer (up to 100 cm deep) and the mid-January surface hoar (80-120 cm deep) are generally dormant, and chances of triggering these weaknesses have decreased. However, triggering may be possible with a large input such as cornice fall, or an avalanche stepping down, especially on slopes that see a lot of sun.

Avalanche Problems

Wind Slabs

Variable winds continue to develop pockets of windslab in the alpine and at treeline.
Be cautious as you transition into wind affected terrain.>Avoid travelling in areas that have been reverse loaded by winds.>

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 3