Bollettino valanghe

Waterton Lakes

Feb 23 – 26, 2026Avalanche Canada
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Archiviato · scaduto 7 months ago

Pericolo valanghe

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

In sintesi

The wind has turned on and we are expecting up to 22 cm by Monday night. Lookout out for building wind slabs near ridgecrests and for loaded pockets. Dry loose activity will continue to be a problem in sheltered steep terrain.

Problemi valanghivi

  • Wind Slabs

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

    As the wind picks up at upper elevations, reactive wind slabs are expected form in lee features.

  • Persistent Slabs

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

    A faceted weak layer exists under a thin crust in isolated pockets. Depending on wind transport over the next few days, this layer could become active. We have had consistent easy propagating test results on this layer on northly aspects.

  • Loose Dry

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

    This problem will be more prevalent in sheltered steep terrain and will be more likely during periods with solar input.

Confidence

Moderate

  • We are uncertain about forecast snowfall amounts.

Avalanche Summary

Numerous dry loose avalanches to size 1.5 observed over the last couple days.

Snowpack Summary

Upper snowpack: Up to 22 cm of new snow is expected accompanied by moderate to strong southwest wind. This will continue to build wind slabs on lee slopes. On solar aspects the new snow sits over a crust at and below treeline.

Mid snowpack: 30-50 cm of settling snow from last week's storms sit over a series of melt freeze crusts and faceted layers on polar aspects. On solar aspects, last week's snow sits over a singular melt freeze crust.

Lower snowpack: is well settled.

Weather Summary

Mon

Up to 22 cm snow by end of day. Low of -7 °C, High of -3 °C. SW Wind gusting to 75 km/h. Freezing level at 1700 m.

Tues

Sunny with cloudy periods. Low of -9 °C, High of -4 °C. SW Wind gusting to 60 km/h. Freezing level at 1700 m.

Wed

Mix of sun, clouds and isolated flurries. Up to 4 cm of snow. Low of -7 °C, High of -4 °C. SW Wind gusting to 75 km/h. Freezing level at 1700 m.

Current weather forecast: Mountain Weather Forecast

Terrain and Travel Advice

  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Be aware of the potential for loose avalanches in steep terrain where snow hasn't formed a slab.
  • If triggered, wind slabs may step down to deeper layers, causing larger avalanches.

Regioni coperte