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Avalanche Forecast

Nov 23rd, 2019–Nov 24th, 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
Below Threshold
The avalanche danger rating below treeline will be below threshold
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
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
1: Low
The avalanche danger rating in the alpine will be low
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: Jasper.

Forecast snow amounts are uncertain Saturday night into Sunday. If it exceeds expectations, expect the hazard to increase with the incoming wind and snow.

Weather Forecast

Saturday night will bring -6 °C., 12cm of snow, West winds 25 km/h gusting to 70 km/h. Sunday will be cloudy with sunny periods and isolated flurries, -7 °C., and West winds 20 km/h gusting to 70 km/h. Monday - Tuesday will be clear skies and cold.

For more details: Avalanche Canada's, Mountain Weather Forecast.

Snowpack Summary

Variable surfaces including crusts, hard wind press and loose snow sit above the Nov. rain crust which goes as high as 2200m. Total snow pack height in alpine is around 45-85 cm. A variety of surfaces in the alpine from wind pressed/scoured features to wind slabs in lee features in the alpine. Sheltered locations have formed Surface hoar.

Avalanche Summary

Hazard can be expected to increase in isolated areas where wind effect and loading is visible. No natural activity observed or reported in the forecast region. A system pushing in will likely elevate the avalanche activity and hazard.

Confidence

Forecast snowfall amounts are uncertain on Sunday

Avalanche Problems

Wind Slabs

Ongoing strong SW winds will redistributed any new snow into windslabs in the high alpine lee features. Monitor how Saturday nights snow input develops this condition.

  • Be cautious as you transition into wind affected terrain.
  • Minimize overhead exposure during periods of heavy loading from new snow, wind.

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

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2

Loose Dry

Saturday nights snow amounts are uncertain yet if it exceeds expectations, a dry loose condition could occur. Particularly in steep terrain.

  • 874
  • Choose ice climbs that are not exposed to avalanches from above.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 1.5