Avalanche forecast

Jasper

Apr 21 – 22, 2019Parks Canada
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Archived · expired 7 years ago

Avalanche danger

Tue
Wed
Alpine
3 · Considerable
Treeline
2 · Moderate
Below
1 · Low
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Highlights

Use conservative route finding to manage a freshly loaded persistent problem.

Keep an eye out for building windslabs.

Avalanche problems

  • Wind Slabs

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

    Rising winds monday will redistribute recent storm snow to Lee features

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–3

    The new snow load initiated a natural cycle on this problem the past couple of days. Give it a few days to settle.

Weather Forecast

Monday upto 8cm of snow accompanied by moderate SW winds gusting to 55km. Freezing levels to rise to 2200M

Tuesday will see cloud with an additional 5-10cm throughout the day along with moderate west winds. 2200M freezing levels

Wednesday will see slightly cooler temps -6 with winds remaining in the moderate west range and lower freezing levels 1900M

Snowpack Summary

15cm of recent settled snow now overlies several crusts / facet layers in the upper 40cm, and a faceted layer down 70cm on shady aspects. Expect isothermal snow at lower elevations.

Avalanche Summary

Recent whumfing in low angle alpine terrain.

Natural and controlled avalanche cycle on friday produced persistent slabs, wind slabs and loose dry avalanches to mainly size 2 max size 3 in the alpine. 

Confidence

Intensity of incoming weather systems is uncertain

Regions covered