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Archived

Avalanche Forecast

Nov 24th, 2015–Nov 25th, 2015
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: South Rockies.

It's early in the season but there is more than enough snow for avalanches. New wind slabs are expected to have formed at higher elevations.  If you are out in the mountains, please post your observations to the Mountain Information Network.

Confidence

Poor - Due to the number of field observations

Weather Forecast

The cold Arctic air will be the dominant feature for the next couple days. On Wednesday, expect dry and sunny conditions with freezing levels below valley bottom. In the morning, alpine winds are expected to be strong from NE but should ease during the day. On Thursday and Friday, dry and sunny conditions continue with light NE winds. On Friday, models are suggesting that a layer of warm air aloft will reach the region and a strong temperature inversion is possible.

Avalanche Summary

No recent avalanches have been reported. If you are out in the mountains, please send us your observations.

Snowpack Summary

Snowpack observations have been very limited as the season commences. Initial reports suggest that there is enough snow above around 1700m for avalanches to occur. Around 10cm of new snow sits on a thick rain crust which exists to at least treeline elevation. In exposed terrain at higher elevations, new winds slabs are expected to have formed and may linger for a few days. The stiff underlying crust may increase the likelihood of triggering a wind slab avalanche.

Avalanche Problems

Wind Slabs

New wind slabs are expected to have formed during the storm.  Winds shifted from SW to NE so expect wind slabs on a variety of aspects.
Be cautious as you transition into wind affected terrain. >If you are increasing your exposure to avalanche terrain, do it gradually as you gather information. >Use ridges or ribs to avoid pockets of wind loaded snow. >

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2