Avalanche forecast

Jasper

Apr 9 – 10, 2024Avalanche Canada
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Archived · expired 2 years ago

Avalanche danger

Thu
Fri
Alpine
2 · Moderate
Treeline
1 · Low
Below
No rating
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Highlights

Watch for changing conditions on solar aspects on Wednesday, the sun packs a punch this time of year.

Avalanche problems

  • Wind Slabs

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

    New wind slabs forming on previous hard surfaces (sun crusts and old wind slabs) will likely need some time to bond.

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1.5–3.5

    This problem seems to be most active where the March 19th crust is not supportive over the Feb 3rd weak layer (down 30-90cm) of facets over a crust.

  • Loose Wet

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    1–1.5

    Watch for point-release avalanches starting in the new snow on steep sun facing slopes.

Confidence

High

Avalanche Summary

Small spin drifts and loose dry avalanches out of steep alpine terrain were observed in the icefields area on Monday.

Snowpack Summary

Up to 10cm of new snow has been redistributed by South to SW winds in the Alpine. Solar slopes and all aspects at tree line and below have a plethora of crusts in the upper snow pack. The Feb 3 PWL is down 40-100cm and remains a concern on shaded aspects above 2400m . The basal depth hoar/facets are gaining strength in deeper snowpack areas.

Weather Summary

Mountain Weather Forecast is available @ Avalanche Canada https://avalanche.ca/weather/forecast

Terrain and Travel Advice

  • Be carefull around freshly wind loaded features.
  • Avoid shallow, rocky areas where the snowpack transitions from thick to thin.
  • Even brief periods of direct sun could produce natural avalanches.

Regions covered