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Archived

Avalanche Forecast

Dec 3rd, 2019–Dec 4th, 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
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: Jasper.

Avoid areas where wind loading is present and/or observable during the storm.

Periodic highway closures (up to 1.5 hours) on Highway 93N near the Icefields for Avalanche Control. Check Alberta 511 for details.

Weather Forecast

A Pacific front, laden with moisture will pass over the park bringing snow and strong Westerly winds for the next 24hrs. By midday Wednesday conditions will clear and freezing levels along with the winds will fall rapidly.

Details here: Mountain Weather Forecast.

Snowpack Summary

New snow falling on to a mix of surfaces; surface facets, surface hoar, and previous windslab and/or hard wind pressed surfaces. New building windslabs in exposed areas in the alpine and treeline. Oct. and Nov. crusts preserved in the mid and lower snowpack; both seem have a good bond to the overlaying snow.

Avalanche Summary

No new avalanches observed or reported.

Confidence

Forecast snowfall amounts are uncertain on Wednesday

Avalanche Problems

Storm Slabs

Building storm slab with new precipitation and wind through the region.

  • Minimize overhead exposure during periods of heavy loading from new snow, wind.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Wind Slabs

New wind slab will continue to build over the next 12 hours in all open areas with moderate to strong west/south-west winds. Ice Climbers should be especially observant to wind loading patterns when choosing a venue for the day.

  • Use caution in lee areas. Recent wind loading have created wind slabs.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2