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Archived

Avalanche Forecast

Nov 15th, 2017–Nov 16th, 2017
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
Below Threshold
The avalanche danger rating below treeline will be below threshold
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
Below Threshold
The avalanche danger rating below treeline will be below threshold
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
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: Glacier.

This morning's hazard is Moderate, but will rise to Considerable this afternoon. Still, early season conditions, ski and ride cautiously.

Weather Forecast

As a low-pressure system pushes inland from the Pacific we should see, 10cm of new snow today and another 10cm tonight. Winds will be moderate out of the South gusting to strong and the freezing level will rise to 1200m. Incremental snowfalls will continue through the week, temperatures will gradually fall with moderate westerly winds.

Snowpack Summary

At treeline, we've seen roughly 30 cm of recent storm snow and the Halloween crust is now buried approximately 60 cm. The Halloween crust sits on 30-50cm of rounded grains and mixed forms which seems to be bonding well for the time being. Below treeline, the height of snow diminishes quickly below 1700m. No recent Alpine observations.

Avalanche Summary

No new avalanche activity observed yesterday in the Highway corridor or reported from riders in the backcountry. Still minimal observations!

Confidence

Due to the number of field observations

Avalanche Problems

Storm Slabs

35cm of storm snow now covers the Nov 9 interface, plus another 10cm falling today. Warming temps and increasing winds will promote slab formation. Keep a keen eye out for changing conditions over the day.
Use caution in alpine and open treeline lees. Recent snowfall has created storm slabs.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2