Avalanche forecast

Jasper

Apr 21 – 23, 2025Avalanche Canada
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Archived · expired last year

Avalanche danger

Wed
Thu
Alpine
2 · Moderate
Treeline
No rating
Below
No rating

Highlights

Cool daytime temps and limited solar should make for some great spring touring this week!

Start and end your day early!

Avalanche problems

  • Wind Slabs

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

    Isolated wind slabs have been building from south-west winds and now the winds have switched to a more northerly direction, look out for loading in not the usual places.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    2–4

    This is combination of our midseason persistent weak layers and the weak facets & depth hoar that live at the bottom of the snowpack. The likelihood of triggering this layer has been decreasing but if triggered, would likely result in a large destructive avalanche.

Confidence

Moderate

Avalanche Summary

Large cornice failures and wind slabs have been observed at alpine elevations.

Wednesday

Large cornice failures and wind slabs have been observed at alpine elevations.

Snowpack Summary

In many sheltered areas, 5-20 cm of soft pow-pow exists. Recent variable loading has wind slabs building on all aspects in the alpine.

The snowpack at treeline and below is a series of crusts and moist snow. Easy travel requires good timing and an overnight freeze to get to the good stuff. The lower snowpack is dry, faceted, and weak.

High north aspects offer the best spring riding conditions, though the snowpack remains susceptible to triggering deeper, unstable layers.

Weather Summary

Overnight: Clear periods. Low -9 °C. Light winds to 25 km/h.

Tuesday: A mix of sun and cloud. High: -4 °C. Ridge wind light to 20 km/h. Freezing level: 1800 metres.

Wednesday: A mix of sun/clouds with isolated flurries. Temps: Low -7 °C, High -1 °C. Ridge wind light to 20 km/h. Freezing level: 2100 metres.

Thursday: Sunny.

Friday: Sunny

Terrain and Travel Advice

  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Regions covered