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Archived

Avalanche Forecast

Nov 28th, 2013–Nov 29th, 2013
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
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
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: South Coast.

A significant winter storm is approaching for Sunday bringing new snow, high winds and elevated danger ratings.

Confidence

Poor - Due to the number of field observations

Weather Forecast

A significant winter storm is expected to impact this region on Saturday night/Sunday.Friday: Flurries turning to light snow late in the day. Strong westerly ridgetop winds. Freezing level around 900 m.Saturday: 5-10 cm new snow with strong westerly ridgetop winds. Freezing level around 900 m.Sunday: 10-25 cm new snow with extreme southwesterly ridgetop winds to 100 km/h. Freezing level lowering to surface.

Avalanche Summary

Wet loose snow avalanche have been reported on steeper south facing slopes.Small glide avalanches have been reported from steep, smooth terrain in the Duffy lake and Coquihalla area.

Snowpack Summary

Information coming from this region has been extremely limited; however, reports suggest there is about 50cm of snow at 1600m in the Duffy Lake area and about 100cm at the same elevation on the Coquihalla. Very little snow has fallen in the last week and the warm temperatures are settling the snowpack rapidly. Terrain below treeline is reported to be mostly below threshold for avalanche activity.Surface snow on steep solar aspects is likely seeing a daily melt-freeze cycle. The warm temperatures have promoted the settlement and strengthening of the upper snowpack. A few crusts can be found deeper in the snowpack. Some facets may be found lingering around these crusts at higher elevations. Observers are not identifying any of these as cause for concern at this time although they might be worth exploring.