Avalanche forecast

Jasper

Feb 20 – 21, 2020Parks Canada
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Archived · expired 7 years ago

Avalanche danger

Fri
Sat
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
2 · Moderate

Highlights

Sunny ways my friends, Sunny ways!

Strong (dare I say, spring like) solar effect through the region. Some surface changes expected but it will take a few days to penetrate deeper into the cold snowpack. 

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–2.5

    Wind slabs are widespread through the region with new and previous loading in lee features. Sensitivity will vary with local loading and wind patterns.

  • Deep Persistent Slabs

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

    Shallow snowpack areas, windslabs and/or large triggers such as cornice failures could trigger this deep layer. The consequences of triggering will likely be severe!

Weather Forecast

Fair weather is here. An upper ridge of high pressure will prevail today giving way to a more zonal flow over the province Thursday. The will bring a series of frontal systems to northern BC through the day Thursday.

Find the Alberta Rockies weather synopsis here: Mountain Weather Forecast

Snowpack Summary

Variable strength windslab on most surfaces TL and above. Some solar effect on steep South aspects. Pronounced cornice development on northerly aspects and cross loaded features treeline and above. The mid-pack is bridging the deeper basal facets and depth hoar in some locations.

Average HS at treeline: ~180cm.

Avalanche Summary

No new avalanches reported from field teams in the Icefields.

Confidence

Regions covered