Avalanche forecast

Jasper

Mar 22 – 23, 2020Parks Canada
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Archived · expired 7 years ago

Avalanche danger

Tue
Wed
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
2 · Moderate

Highlights

Expect freshly formed wind slabs in the alpine and open tree line features.

Avalanche problems

  • Wind Slabs

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

    As the snow falls, it will be sitting on a variety of surfaces, from Melt freeze crusts to Scoured wind hammered and sastrugi. The bond will depend on the temperatures during the storm.

  • Loose Wet

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

    Strong possiblity of rain overnight and into the morning at lower elevation areas below 2000m

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    2–3.5

    This problem will require a large trigger, thin spots, increased loading or rapid day time warming.

Avalanche Summary

No new avalanches observed or reported.

Confidence

Intensity of incoming weather systems is uncertain on Monday

Weather Forecast

A Pacific low was tracking North to South from Panhandle pulling a broad ridge behind. This will being generally unsettled weather with some accumulation (up to 8cm) overnight and over the day Monday with moderate to strong afternoon winds and rising freezing levels to 1400m.

More detailed forecast at: Mountain weather forecast

Snowpack Summary

Forecasted snow (up to 5-8cm overnight Sunday) over a supportive melt freeze crust exists on all Solar aspects to Alpine elevation. Scoured from previous winds. Old hard slabs exists in the alpine and open tree line. More confidence in the southern snowpack. Cornices remain an overhead hazard,

Regions covered