Avalanche forecast

Jasper

Dec 9 – 10, 2022Avalanche Canada
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Archived · expired 4 years ago

Avalanche danger

Sun
Mon
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
2 · Moderate
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Highlights

Whumpfing and shooting cracks in the Bald Hills on Thursday had the field team carefully picking their ski lines below tree line. Be vigilant with the persistent layer before committing to terrain.

Avalanche problems

  • Wind Slabs

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

    New wind slabs are forming with the recent snow and current strong south west winds.

  • Persistent Slabs

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

    Marmot Basin Ski area reports surface hoar extending into some alpine features. Solar crust on south aspects is also of concern. Dig and assess this layer before committing to terrain. Lots of whumpfing and shooting cracks have been observed on this layer across Jasper but no avalanches have been observed yet.

Confidence

Moderate

Avalanche Summary

No new avalanches were observed on a road patrol to the Maligne Lake area on Thursday.

Snowpack Summary

Trace of new snow across the region on Thursday afternoon getting blown around by strong south west winds creating wind slabs in the alpine and tree line. Tree line and below there is a buried layer down 30-35cm that consists of surface hoar, facets, and sun crust depending on aspect and location. Snow depth ranges from 45-110cm.

Weather Summary

Friday

Cloudy with sunny periods and isolated flurries.

Precipitation: Trace.

Alpine temperature: High -11 °C.

Ridge wind southwest: 15-35 km/h.

Freezing level at valley bottom.

Saturday

Cloudy with sunny periods and isolated flurries.

Precipitation: Trace.

Alpine temperature: Low -13 °C, High -7 °C.

Ridge wind south: 10-25 km/h.

Freezing level at valley bottom.

Sunday

Cloudy with sunny periods and isolated flurries.

Precipitation: Trace.

Alpine temperature: Low -13 °C, High -6 °C.

Light ridge wind.

Freezing level at valley bottom.

Terrain and Travel Advice

  • Watch for signs of slab formation throughout the day.

Regions covered