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Archived

Avalanche Forecast

Dec 5th, 2019–Dec 6th, 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
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
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

Regions: Jasper.

Kick the tires and light the fires! Reports of excellent skiing at treeline right now.

Weather Forecast

More snow on the horizon. 

Friday: Periods of snow. Up to 15cm with temps around -5 to -10. Light to moderate SW winds.

Saturday: Flurries with up to 10cm. Light SW winds and temps ranging from -5 to -15.

Sunday: Sun and cloud with cooler temps -10 to -20 with mostly light winds

Details here: Mountain Weather Forecast.

Snowpack Summary

Up to 30cm of new snow in the Columbia Icefields area fell on to a mix of surfaces; surface facets, surface hoar, and previous wind slab and/or hard wind pressed surfaces. The moderate winds built soft wind slabs at ridge tops. Oct. and Nov. crusts are preserved in the mid and lower snowpack and both seem have a good bond to the overlaying snow.

Avalanche Summary

Avalanche control work in the Parker Ridge area yesterday produced little results, only 2 soft size 2 wind slabs were triggered from 15 explosive shots. On our drive back to town we had decent visibility and observed no new natural avalanches.

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Saturday

Avalanche Problems

Wind Slabs

New soft windslabs have formed in the lee areas from the storm that just pushed through. The distribution at treeline is more isolated.

  • Use caution in lee areas in the alpine and treeline. Recent storm snow has formed wind slabs.
  • Use caution in lee areas. Recent wind loading have created wind slabs.

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

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2