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Avalanche Forecast

Nov 22nd, 2019–Nov 23rd, 2019
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
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
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.

Winter is on its way! Forecast snow amounts are uncertain. Expect the hazard to increase with the incoming wind and snow.

Weather Forecast

Winter is on its way.

Saturday: Periods of snow. Up to 20cm of new snow with light to moderate west winds. Alpine temps around -5 and freezing levels in the valleys.

Sunday: Flurries with up to 10cm with moderate to strong westerly winds and cooler temps from -5 to -10

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

Snowpack Summary

Variable surfaces including temp/rain crust, 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. Surface hoar currently waiting to be buried.

Avalanche Summary

Previous strong winds transported old snow through the high alpine peaks and ridge tops. 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. The storm pushing in on Saturday night will most likely elevate the avalanche activity.

Confidence

Intensity of incoming weather systems is uncertain on Saturday

Avalanche Problems

Wind Slabs

Fairly recent winds have redistributed snow into windslabs in the high alpine lee features. With the incoming storm expect more wind and storm slab development

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

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2