Bollettino valanghe

South Columbia

Mar 5 – 6, 2026Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 7 months ago

Pericolo valanghe

Sat
Sun
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
3 · Marcato
Apri la mappa completa

In sintesi

Dangerous avalanche conditions persist at all elevations!

The current snowpack is unusually complex and may show little or no warning signs before producing very large avalanches.

Problemi valanghivi

  • Wind Slabs

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

    Previously formed and new wind slabs remain possible with small amounts of new snow and variable winds at higher elevations.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    2–4

    Multiple weak layers are present between roughly 80 and 180 cm deep. Triggering any of these layers would likely produce large, destructive avalanches. Exercise extreme caution on any large slope that has not recently avalanched.

Confidence

Moderate

  • We are uncertain about how quickly persistent slabs are gaining strength.

Avalanche Summary

Large natural or rider-triggered persistent slab avalanches have been reported daily over the past week, ranging in size from 1 to 4 and occurring throughout the region at all elevations. A few have occurred in low-angle terrain that typically wouldn’t avalanche.

Although natural avalanche activity has slowed since the weekend, it remains uncertain at what point the small amounts of snow and light wind in the forecast could be enough to trigger new natural avalanches.

Snowpack Summary

Up to 100 cm of recent storm snow continues to settle atop an unusually complex snowpack.

Three persistent weak layers of concern are found in the upper 180 cm of the snowpack:

  • 60 to 70 cm down is a layer of surface hoar in sheltered areas, or a melt-freeze crust on sun-exposed slopes from mid-February.

  • 90 to 120 cm down is the early-February layer of surface hoar in wind-sheltered terrain and a crust on sun-exposed slopes.

  • 110 to 140 cm down is the late-January layer of surface hoar and facets over a melt-freeze crust.

All of these persistent layers have continued to produce large avalanches.

Below this, the remainder of the snowpack is well consolidated and strong.

Weather Summary

Wednesday Night
Mostly cloudy. 2 to 5 cm of snow. 30 km/h west ridgetop wind. Treeline temperature -4 °C. Freezing level 1600 m.

Thursday
Mostly cloudy. 1 to 4 cm of snow. 30 km/h west ridgetop wind. Treeline temperature -6 °C.

Friday
Mostly cloudy. 1 to 5 cm of snow. 40 km/h west ridgetop wind. Treeline temperature -6 °C.

Saturday
Mostly cloudy. 3 to 10 mm of precipitation as snow or rain at treeline. 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

  • It's critical to stay disciplined and stick to gentle, low consequence terrain.
  • Be careful as you transition into wind-affected terrain.
  • If triggered, wind slabs may step down to deeper layers, causing larger avalanches.
  • Carefully manage your exposure to overhead hazards.

Regioni coperte