Bollettino valanghe

Microwave-Sinclair

Jan 27 – 28, 2025Avalanche Canada
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Archiviato · scaduto 2 years ago

Pericolo valanghe

Wed
Thu
Alta quota
3 · Marcato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole
Apri la mappa completa

In sintesi

Warm temperatures up high may increase the likelihood of triggering an avalanche.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–2.5

    Watch for steep convex rollovers, ridgetop entrances, and cross-loaded features.

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1–2

    Cornices may fail naturally during periods of warm weather.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    2–3

    A widespread crust with facets is buried 50 to 100 cm deep. Wind slabs may step down to this layer, producing large avalanches.

Confidence

Low

Avalanche Summary

A rider triggered a large (size 2.5) slab avalanche on a southeast alpine slope on Sunday. The slab ranged from 20 to 100 cm deep with wind loading variability. The slab may have released on the persistent weak layer described in the Snowpack Summary. See this MIN for more information.

Snowpack Summary

Recent snow has been heavily wind-affected in exposed areas. A crust exists below 1250 m, making for challenging travel conditions.

A weak layer of facets and a crust from early December is buried roughly 50 to 100 cm deep.

Weather Summary

Sunday Night

Clear skies. 30 to 50 km/h northwest ridgetop wind. Treeline temperature -3 °C with a temperature inversion.

Monday

Mostly clear skies. 30 to 40 km/h west ridgetop wind. Treeline temperature 0 °C with a temperature inversion.

Tuesday

Mostly cloudy with 1 to 2 cm of snow. 15 to 30 km/h southwest ridgetop wind. Treeline temperature -2 °C.

Wednesday

A mix of sun and cloud with 5 cm of snow overnight and 2 cm during the day. 40 to 60 km/h southwest ridgetop wind. Treeline temperature -4 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.
  • Avoid travelling on slopes below cornices.

Regioni coperte