Avalanche forecast

Jasper

Dec 4 – 5, 2019Parks Canada
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Archived · expired 7 years ago

Avalanche danger

Thu
Fri
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low

Highlights

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.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2

    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.

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2

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

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

Regions covered