Avalanche forecast

Jasper

Feb 17 – 18, 2022
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Archived · expired 5 years ago

Avalanche danger

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

Highlights

New snow has refreshed the skiing in some areas and good skiing is being found around treeline on shaded and sheltered aspects.

Avalanche problems

  • Wind Slabs

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

    Sensitivity and consequence of this new slab may be increasing with incremental loading. These slabs are sitting on previous hard surfaces (old wind slabs, temperature and sun crusts).

  • Persistent Slabs

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

    Persistent slabs sit over different weak layers depending on elevation & aspect. Above 1950m a buried facet layer down 20-40cm is the primary concern. Below 1950m, a faceting crust down 40-70 is presenting a more stubborn version of a similar problem

Weather Forecast

Thursday: Cloudy with scattered flurries. Accumulation: 4 cm. High -5 C. Ridge wind west: 20 km/h gusting to 50 km/h

Friday: Cloudy with scattered flurries. Accumulation: 5 cm. Low -7 C, High -4 C. Ridge wind west: 20 km/h gusting to 45 km/h

Saturday: Flurries. Accumulation: 6 cm. Low -10 C, High -7 C. Ridge wind west: 20 km/h gusting to 60 km/h

Snowpack Summary

5 to 15cm new snow (past 48hrs) across the bulletin region accompanied by moderate Westerly winds has formed slabs in immediate lees in the alpine and exposed tree line. New snow burying weak temperature crust up to 1900m and solar crust on solar aspects up to 2800m. Dec Facets down 20-70cm. Basal faceting & depth hoar widespread throughout area.

Avalanche Summary

No new avalanche activity observed or reported over the last 3 days.

Confidence

Regions covered