Bollettino valanghe

Jasper

Apr 4 – 5, 2026Avalanche Canada
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Archiviato · scaduto 6 months ago

Pericolo valanghe

Mon
Tue
Alta quota
2 · Moderato
Limite del bosco
1 · Debole
Sotto il limite
2 · Moderato

In sintesi

Warming trend expected over the next few days. Be mindful of overhead hazards such as rockfall and cornice fall, which are large enough to trigger persistent weak layers deeper in the snowpack.

As freezing levels rise, shaded slopes above treeline may still offer excellent skiing conditions.

Problemi valanghivi

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    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.

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–1.5

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.

Snowpack Summary

Dry snow can still be found in shady aspects. 20-40 cm below, a firm rain crust from late March 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

Sunday
A mix of sun and cloud. Precipitation: Nil. Alpine temperature: High 0 °C. Ridge wind light to 15 km/h. Freezing level: 2200 metres.

Monday

Cloudy with sunny periods and isolated flurries. Precipitation: Trace.

Alpine temperature: Low -3 °C, High 2 °C. Ridge wind southwest: 15 km/h gusting to 70 km/h. Freezing level: 2500 metres.

Tuesday

Flurries. Accumulation: 8 cm. Alpine temperature: Low -11 °C, High 2 °C. Ridge wind west: 20 km/h gusting to 85 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.

Regioni coperte