Lawinenlagebericht

Jasper

Apr 3 – 6, 2026Avalanche Canada
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Archiviert · abgelaufen 6 months ago

Lawinengefahr

Sun
Mon
Hochgebirge
2 · Mässig
Waldgrenze
1 · Gering
Unterhalb
1 · Gering
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Kernpunkte

Recent avalanches have been triggered by rock or cornice fall. Consider large loads when choosing terrain.

Dig and investigate persistent weak layers before committing to slopes.

The best skiing is on sheltered north facing slopes in the alpine and at treeline.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    1–2

    Previous south westerly winds have created wind slabs in the alpine. Be cautious of lee or cross loaded features.

  • Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    1.5–3

    The March 20 crust is buried 20-60cm at tree line and below. The Jan 24 facets are 80 to 120cm deep. Dig down to investigate how these layers have adapted to the load. Slopes that have not released naturally should be treated with caution.

Confidence

High

  • We are confident due to a stable weather pattern.

Avalanche Summary

Mt. Nigel had two separate size 2.5 avalanches that released on the persistent weak layer on April 2nd. Both were on a southwest aspect and likely caused by warm temps and solar radiation.

A size 2.5 cornice triggered persistent slab was observed on the west face of Mt. McGuire on April 1st originating in steep terrain.

Snowpack Summary

A sun crust has formed on solar aspects. Dry snow can still be found on polars. Previous southwesterly winds have created wind slabs in the alpine. 20-40 cm below, a firm rain crust is supportive at low elevations but gradually disappears above tree line, around 2300 m. A deeper persistent weak layer from late January exists in the alpine down 80–120 cm. The lower snowpack is generally strong although weak basal facets can still be found in shallow areas.

Weather Summary

Saturday
Mainly cloudy with isolated flurries.

Precipitation: Trace.

Alpine temperature: High -4 °C.

Ridge wind west: 15 km/h gusting to 40 km/h.

Freezing level: 1800 metres.

Sunday

Mainly cloudy with isolated flurries.

Precipitation: Trace.

Alpine temperature: Low -5 °C, High -1 °C.

Ridge wind light to 20 km/h.

Freezing level: 2200 metres.

Monday

Mainly cloudy with isolated flurries.

Precipitation: Trace.

Alpine temperature: Low -2 °C, High 1 °C.

Ridge wind southwest: 15 km/h gusting to 55 km/h.

Freezing level: 2300 metres.

Terrain and Travel Advice

  • Keep in mind that human triggering may persist as natural avalanches taper off.
  • Cornice failures could trigger large and destructive avalanches.
  • Approach lee and cross-loaded slopes with caution.

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