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Archived

Avalanche Forecast

Mar 17th, 2018–Mar 18th, 2018
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
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
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Little Yoho.

Ski quality has improved, just watch for localized storm slab formation and how that is bonding to the surface below. It should stay cloudy Sunday but local danger could increase if the sun pops out.

Weather Forecast

5cm and mainly cloudy on Sunday with a slight cooling trend and light NE winds. The sun will return on Monday with a more diurnal pattern.

Snowpack Summary

20-30 cm of recent snow has formed a variable soft slab on some features that is slowly bonding to the underlying surfaces, such as melt freeze crust on solar aspects and older snow layers including facets on shady aspects. Below this the majority of the snowpack is stable and has recently shown no results in tests.

Avalanche Summary

Isolated storm slabs to size 2 have been seen over the last 24 hours including 1 on Cathedral Mountain on a Northerly aspect.

Confidence

Avalanche Problems

Storm Slabs

20-30cm recent snow has formed a soft slab and has seen recent human triggering. Dig down to look at how the new snow is bonding to the surface below, as there are a variety of crusts, facets, and old snow depending on aspect and elevation.
The storm slab may be more sensitive to human triggering on solar aspects where it sits on sun crust

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2