Bollettino valanghe

Lizard-Flathead

Mar 1 – 2, 2026Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 7 months ago

Pericolo valanghe

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

In sintesi

It's a challenging snowpack.

Strong winds have left slabs in open features, while persistent slab avalanches are most likely in sheltered areas at treeline and below.

Problemi valanghivi

  • Wind Slabs

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

    Recent wind slab formation has been extensive, and stubborn slabs could extend into openings below treeline.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1.5–3

    Be aware of the potential for remote triggering and large avalanches due to buried surface hoar, especially at treeline and below.

  • Loose Wet

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

    Wet avalanches are expected with direct sun and rising freezing levels.

Confidence

Moderate

  • We have higher uncertainty about treeline conditions due to persistent slabs.

Avalanche Summary

On Friday, our field team reported whumpfing and cracking, and a reactive layer of surface hoar in snowpack tests.

On Thursday, our field team found a reactive persistent slab problem near Sparwood.

Observations are currently very limited in this region. Please consider sharing your observations with the Mountain Information Network.

Snowpack Summary

20 to 40 cm of recent snow and strong winds produced a variety of pressed surfaces, slabs, and sastrugi, including into open areas below treeline.

A reactive layer of surface hoar is buried 30 to 60 cm below the surface. Persistent slab avalanches are most likely in sheltered areas at treeline and below, where the surface hoar is well preserved.

The mid and lower snowpack are well settled in some areas. In others, large facets (depth hoar) are present at the bottom of the snowpack.

Weather Summary

Saturday Night

Clear skies. 40 km/h west ridgetop wind. Treeline temperature -6 °C.

Sunday

Sunny. 50 km/h west ridgetop wind. Treeline temperature -4 °C.

Monday

Sunny. 40 km/h west ridgetop wind. Treeline temperature -2 °C.

Tuesday

Mix of sun and clouds. 1 to 5 cm of snow. 60 km/h west ridgetop wind. Treeline temperature -1 °C. Freezing level 1900 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks, or recent avalanches.
  • Keep your guard up at all elevations. Wind slab formation has been extensive and could extend into openings below treeline.
  • Be aware of the potential for remote triggering and large avalanches due to buried surface hoar.
  • In times of uncertainty, conservative terrain choices are our best defense.
  • Limit exposure to steep, sun exposed slopes, especially when the solar radiation is strong.

Regioni coperte