Avalanche forecast

Jasper

May 1 – 4, 2025Avalanche Canada
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Avalanche danger

Sat
Sun
Alpine
Spring conditions
Treeline
Spring conditions
Below
Spring conditions
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Highlights

CAUTION! We are entering the first period this spring with freezing levels above 3500m and no or limited overnight freeze. This is a ALL MELT, NO FREEZE scenario.

We are also expecting new snow or rain on Saturday night that could increase the avalanche hazard.

Limit your exposure to avalanche terrain.

Avalanche problems

  • Cornices

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    2–3

  • Loose Wet

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Very Likely
    Size
    1–2

  • Deep Persistent Slabs

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

    This is combination of midseason persistent weak layers and the weak facets & depth hoar at the bottom of the snowpack.

Confidence

Moderate

Avalanche Summary

No recent observations of large avalanches

Snowpack Summary

Without a good overnight freeze the snowpack is slush to treeline. With a good freeze there are surface crusts on south aspects to mountain top and on north aspect to 2600m. On sheltered northerly slopes above 2600m, soft snow exists and the snowpack remains susceptible to triggering deeper, unstable layers.

Weather Summary

Friday

A mix of sun and cloud.

Precipitation: Nil.

Alpine temperature: High 8 °C.

Ridge wind southwest: 10-20 km/h.

Freezing level: 3600 metres.

Saturday

Showers.

Precipitation: 9 mm.

Alpine temperature: Low 2 °C, High 9 °C.

Ridge wind southwest: 10-30 km/h.

Freezing level: 3200 metres.

Sunday

Flurries.

Accumulation: 8 cm.

Alpine temperature: Low -3 °C, High 2 °C.

Ridge wind northwest: 10-30 km/h.

Freezing level: 2400 metres.

Terrain and Travel Advice

  • Back off slopes as the surface becomes moist or wet with rising temperatures.
  • Loose avalanches may step down to deeper layers, resulting in larger avalanches.
  • Travel early on sun-exposed slopes before cornices weaken with daytime warming.

Regions covered