Avalog Join
Archived

Avalanche Forecast

Dec 13th, 2020–Dec 14th, 2020
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
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
1: Low
The avalanche danger rating below treeline will be low

Regions: Lizard-Flathead.

  

Small wind slabs may remain reactive to human triggers in isolated locations. Use caution when transitioning into wind affected terrain.

Confidence

Moderate - Uncertainty is due to the limited number of field observations.

Weather Forecast

  

SUNDAY NIGHT: Cloudy / Moderate, northwest ridgetop wind / alpine low temperature -12 / Freezing level valley bottom.

MONDAY: Cloudy / Light, northwest ridgetop wind / alpine high temperature -9 / Freezing level valley bottom.

TUESDAY: Snow; 5-10 cm. / Strong, west ridgetop wind / alpine high temperature -7 / Freezing level valley bottom.

WEDNESDAY: Cloudy with flurries; 3-5 cm. / Strong, west ridgetop wind / alpine high temperature -5 / Freezing level valley bottom.

Avalanche Summary

No new avalanches were reported in this region on Saturday.

Data in this region is very sparse. Please submit your observations to the Mountain Information Network. 

Snowpack Summary

Recent northerly winds created wind slabs at treeline and above. Up to 30 cm of recent storm snow sits on top of a crust formed in early December. 

Deeper in the snowpack there are couple of crusts that formed in November. No recent avalanche activity has been reported on the November crusts.

Terrain and Travel

  • Recent wind has varied in direction so watch for wind slabs on all aspects.
  • Be careful with wind loaded pockets, especially near ridge crests and roll-overs.
  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Avoid areas where the snow feels stiff and/or slabby.

Avalanche Problems

Wind Slabs

 Isolated pockets of wind slabs could be reactive to human triggers.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 1.5