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Archived

Avalanche Forecast

Jan 2nd, 2021–Jan 3rd, 2021
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
4: High
The avalanche danger rating at treeline will be high
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
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
1: Low
The avalanche danger rating below treeline will be low

Regions: Jasper.

Highway 93N will be closed for avalanche control Sunday and possibly Monday. Check Alberta 511 for up to date information

Weather Forecast

Tonight: Snow accumulation: 20 cm. Alpine temperature: Low -6 C. Ridge wind southwest: 15 km/h gusting to 50 km/h.Sunday: Flurries. Accumulation: 5 cm. Alpine temperature: High -6 C. Wind SW moderate.Monday: Isolated flurries Alpine temperature: Low -12 C, High -8 C. Ridge wind southwest: 15 km/h gusting to 40 km/h.

Snowpack Summary

Up to 50cm new snow by Sun morning with mod/strong SW winds overlies 25-40cm of soft snow over a firm mid-pack with facets and depth hoar lingering near the ground. Mid-December persistent layers, including SH, and SH/FC combos can be found down 25-40cm but, only in isolated and sheltered locations, and almost exclusively in the Icefields region

Avalanche Summary

No new avalanches observed on road patrol along highway 93N, however visibility was limited.Make your field trip observations count! Share them with the local outdoor adventure community on the Mountain Information Network from Avalanche Canada.

Confidence

Intensity of incoming weather systems is uncertain on Saturday

Avalanche Problems

Wind Slabs

Recent new snow and southwesterly winds are creating new wind slabs reactive to human triggering.

  • Use caution in lee areas. Recent wind loading has created reactive slabs.
  • Minimize overhead exposure during periods of heavy loading from new snow, wind.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Very Likely

Expected Size: 1 - 2.5

Storm Slabs

New snow and warm temperatures could create soft slabs that might be reactive 

  • The new snow will require several days to settle and stabilize.
  • Minimize exposure during periods of heavy loading from new snow and wind.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 2.5

Persistent Slabs

  • If triggered the wind slabs may step down to deeper layers resulting in large avalanches.
  • Avoid thin, rocky or unsupported slopes.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 3