Avalanche forecast

Jasper

Nov 19 – 20, 2015Parks Canada
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Archived · expired 11 years ago

Avalanche danger

Thu
Fri
Alpine
3 · Considerable
Treeline
2 · Moderate
Below
1 · Low
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Highlights

Highway 93 will remain closed into Thursday due to driving conditions. The recent storm brought a significant amount of snow. Allow it to settle and stabilize.

Avalanche problems

  • Loose Dry

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2
    Expect point releases from cliffs and steep smooth surfaces. This amount of new snow sluffing can build enough mass to bury a person.

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–3
    Between 85 - 135cm of storm snow between Nov. 12th and 17th storm in the Icefields area has fallen on a shallow early season older snowpack of facets, crusts and possibly surface hoar. Winds will evolve this into a windslab eventually.

Weather Forecast

The weather will be cold and stable next few days. No new significant snow expected. Winds will be light to moderate out of the West.

Snowpack Summary

The recent storm brought 60cm. Snow depths vary between 70 to 140 cm in the Icefields. Generally unsupportive below treeline and improving at you approach TL and above. Moderate to strong ridge top winds have created soft slabs particularly on lee aspects. Threshold values have been reached on some slopes and snow remains available for transport.

Avalanche Summary

Explosive work on Parkers slabs had one shallow size 2.5 slab and a couple smaller releases. Some natural avalanches up to size 3 within last 24 hours were noted in the alpine mainly on lee steep slopes.

Confidence

The weather pattern is stable on Thursday

Regions covered