Bollettino valanghe

Kootenay Boundary

Mar 2 – 3, 2026Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 7 months ago

Pericolo valanghe

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

In sintesi

Large, persistent slab avalanches triggered by riders and occurring naturally continue to be reported daily - many in steep treed areas.

Problemi valanghivi

  • Wind Slabs

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

    Recent windslab 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
    Possible - Likely
    Dimensione
    2–3

    Be aware of the potential for remote-triggering and large avalanches due to buried surface hoar, especially at treeline and below. Watch for wet avalanches with sun and daytime warming, these could trigger the weak layer below.

  • Loose Wet

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

    Direct sun and daytime warming may trigger wet avalanches.

Confidence

Moderate

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

Avalanche Summary

On Friday and Saturday, natural, remote, and rider-triggered avalanches up to size 3 were reported. This Friday MIN reports remote-triggering a large avalanche from 50 m away.

In the last week, large, persistent avalanches have been triggered or failed naturally almost daily; many occurring around steep openings in treed areas. See Feb 24 MIN and Feb 21 MIN

Snowpack Summary

Widespread wind effect has impacted 20 to 30 cm of recent snow, leaving a variety of pressed surfaces into open treeline areas. A sun crust covers steep solar slopes, and moist surfaces are expected with sun and daytime heating.

In the top 100 cm of the snowpack, there are multiple concerning weak layers of surface hoar and/or crusts/facets. The majority of recent persistent slab avalanches have been on well-preserved surface hoar in sheltered areas at treeline and below.

The mid and lower snowpack are well settled.

Weather Summary

Sunday Night

Clear skies. 20 km/h west ridgetop wind. Treeline temperature 0 °C.

Monday

Sunny. 30 km/h west ridgetop wind. Treeline temperature 1 °C.

Tuesday

Mix of sun and clouds. 2 to 5 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -1 °C.

Wednesday

Mostly cloudy. 4 to 20 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -2 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • In times of uncertainty, conservative terrain choices are our best defense.
  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks, or recent avalanches.
  • Be aware of the potential for remote triggering and large avalanches due to buried surface hoar.
  • Be alert to conditions that change with elevation and sun exposure.

Regioni coperte