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Archived

Avalanche Forecast

Dec 14th, 2019–Dec 15th, 2019
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
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
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Jasper.

Continued mild temps for the next couple days, Tuesday looks promising for a much needed refresh.

Weather Forecast

Sunday- Will be a mix of sun and cloud, Low -18 High -15 Light westerly winds No new snow

Monday- Mix sun and cloud Low -18 high -13 Trace amounts of precip

Tuesday- Flurries High -9 Low -13 with 7cm accumulation accompanied by Light south westerly winds

For more details: Mountain Weather Forecast

Snowpack Summary

The top 30cm remains unconsolidated except where exposed to wind where soft slabs have been formed. The snow depth is variable at all elevations. There is a crust/facet layer distributed through the region in the mid-pack with mixed reactivity and a weak basal facet/depth hoar layer at the base of the pack.

Avalanche Summary

A road trip to Saskatchewan crossing today found no new avalanches. Friday's field trip to Pyramid mountain area noted nothing new and no signs of instability and a consolidated snowpack. Thursday's field trip to Churchill slide path noted no new naturals.

Confidence

Track of incoming weather systems is uncertain on Tuesday

Avalanche Problems

Persistent Slabs

Isolated to very specific sheltered locations at treeline.

  • Dig down to find and test weak layers before committing to a line.

Aspects: All aspects.

Elevations: Treeline.

Likelihood: Unlikely

Expected Size: 1 - 2.5

Loose Dry

Specific to steep terrain. Ice climbers should pay particular attention to this as entrenched loose snow may have the volume to knock climbers off their stance. Solar input has the potential to trigger this problem.

  • 874
  • Be increasingly cautious on sun exposed slopes.

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

Elevations: Alpine, Treeline.

Likelihood: Unlikely

Expected Size: 1 - 2

Deep Persistent Slabs

Previous wind slabs may be sitting over a basal weakness

  • Be aware of the potential for full depth avalanches due to weak layers at the base of the snowpack.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1.5 - 3