Bollettino valanghe

Northwest Coastal

Feb 2 – 3, 2025Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 2 years ago

Pericolo valanghe

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

In sintesi

Avoid areas where the wind is actively depositing snow, wind slabs are most reactive as they are forming.

Very large avalanches are a concern in alpine terrain.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Very Likely
    Dimensione
    1–2

    Strong outflow (northeast) wind is actively building wind slabs on south and west aspects

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    2.5–3.5

    The 150 to 250 cm deep weak layer from early December continues to produce large avalanches.

  • Storm Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–2

    Recent snow continues to produce natural and human triggered avalanches

Confidence

Moderate

Avalanche Summary

On Friday:

  • Recent snow and wind produced a number of large and small natural and human triggered storm slab avalanches on all aspects and at all elevations.

On Thursday:

  • Two size 3 persistent slab avalanches were reported on southerly aspects in the alpine, both avalanches stepped down to layers from December. One of them was remote triggered from 30 m away!

On Wednesday:

  • A size 3 natural triggered persistent slab avalanche was reported on a north aspect in the alpine.

Snowpack Summary

There has been 30 to 60 cm of new snow since Wednesday, that is being redistributed by strong north east wind, reverse loading features at all elevations.

A surface hoar layer that is between 50 - 90cm deep.

Buried weak layers from December, 150 to 250 cm deep, include crusts, facets, and/or surface hoar, and continue to produce large avalanches.

Weather Summary

Saturday Night

Mostly clear with flurries. 30 to 60 km/h northeast ridgetop wind. Treeline temperature -25 °C.

Sunday

Sunny. 30 to 70 km/h northeast ridgetop wind. Treeline temperature -24 °C.

Monday

Sunny. 40 to 80 km/h northeast ridgetop wind. Treeline temperature -24 °C.

Friday Night

Sunny. 30 to 70 km/h east ridgetop wind. Treeline temperature -21 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Make conservative terrain choices and avoid overhead hazard.
  • Closely monitor how the new snow is bonding to the old surface.

Regioni coperte