Bollettino valanghe

Lizard-Flathead

Mar 27 – 28, 2026Avalanche Canada
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Archiviato · scaduto 6 months ago

Pericolo valanghe

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

In sintesi

Lingering wind slabs may remain possible to trigger on Saturday.

Avoid steep, rocky, and wind affected areas where triggering slabs is most likely.

Problemi valanghivi

  • Wind Slabs

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

    10 to 20 cm of recent snow and strong southwest winds formed wind slabs on lee aspects at upper elevations. These slabs are most likely to be reactive on steep slopes below ridgetops.

  • Loose Wet

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

    Strong solar radiation will very likely trigger wet loose avalanches on steep sunny slopes.

Confidence

High

  • We have a good understanding of the snowpack structure and confidence in the weather forecast.

Avalanche Summary

On Thursday, a small cornice failure triggered a size 1 storm slab below an alpine ridgetop.

If you are heading into the backcountry, please consider sharing conditions by posting a MIN.

Snowpack Summary

10 to 20 cm of recent snow and strong southwest winds formed wind slabs on lee aspects at upper elevations. These slabs are most likely to be reactive on steep slopes below ridgetops. The recent snow sits on a thick crust.

Below this, up to 50 cm of rain soaked snow lies over a crust (1 to 10 cm thick) from early March.

Persistent weak layers may linger within the top 150 cm of the snowpack. These are unlikely to trigger in most areas where a thick crust is present above the weak layers.

The mid and lower snowpack is well settled and strong in most areas.

The snowpack depth tapers rapidly at lower elevations.

Weather Summary

Friday Night
Mostly clear skies. 40 km/h west ridgetop wind. Treeline temperature -1 °C.

Saturday
Mix of sun and clouds. 30 km/h southwest ridgetop wind. Treeline temperature 0 °C.

Sunday
Mostly cloudy. 0 to 5 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -2 °C.

Monday
Mostly cloudy. 5 to 15 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -6 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Stay off recently wind loaded slopes until they have had a chance to stabilize.
  • Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • A moist or wet snow surface, pinwheeling, and natural avalanches are all indicators of a weakening snowpack.

Regioni coperte