Avalanche forecast

Jasper

Jan 28 – 29, 2022
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Avalanche danger

Sat
Sun
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low
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Highlights

Soft turns possible in sheltered locations; Alpine is wind hammered and variable. 

Avalanche problems

  • Wind Slabs

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

    Wind slab can be found in specific alpine and tree line terrain features. Watch out for hollow sounding snow where a hard wind slab sits over weak facets.

  • Persistent Slabs

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

    The slab problem overlies different layers depending on elevation and aspect. Lower elevations has a rain crust 40-60cm down with weak facets on top reacting to tests. Above 1950m, a buried facet layer down 40-50cm is the primary concern.

Weather Forecast

Friday

Variable cloud.

Precipitation: Nil.

Alpine temperature: High -8 C.

Ridge wind west 15 km/hr.

Freezing level valley bottom.

Saturday

Mostly cloudy.

Precipitation: Nil.

Alpine temperature: Low -11 C, High -8 C.

Ridge wind southwest 15-30 km/hr

Freezing level valley bottom.

Sunday

Flurries.

Precipitation: 8cm.

Alpine temperature: Low -12 C, High -6 C

Snowpack Summary

Widespread wind effect and stripping in alpine from previous strong to extreme SW winds. Wind slab in specific areas tree line and above. Thin sun crust on steep solar aspects up to ~2300m. The midpack is mostly supportive. Weak facet layer down ~20-30cm and a crust down 40-60cm below 1950m, faceting but still reactive in snowpit tests.

Avalanche Summary

Patrol and tour south end of Churchill range noted no new avalanche activity Wednesday. No patrol on Thursday.

Confidence

Regions covered