Bollettino valanghe

Northwest Coastal

Avalanche Canada
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Pericolo valanghe

Mon
Tue
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
2 · Moderato
Non aggiornato — questo bollettino è scaduto 4 months ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Reactive wind slabs likely exist at higher elevations where dry snow remains, while loose wet avalanches are expected with high freezing levels and little to no overnight refreeze.

Problemi valanghivi

  • Wind Slabs

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

    Wind slabs formed earlier in the week persist. New snow and strengthening winds over the weekend may create additional wind slabs in some areas.

  • Loose Wet

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

    Wet loose avalanches are most likely during periods of direct solar input and as temperatures rise later in the day.

Confidence

Moderate

  • We are uncertain due to a highly variable snowpack.
  • We are uncertain due to a limited number of field observations.

Avalanche Summary

Several small avalanches (size 1 to 2) were reported over the last couple of days. In general, loose wet avalanches were reported on steep, sun-exposed slopes, while a mix of loose dry, wind slab, and storm slab avalanches occurred at higher elevations on shaded slopes where dry snow persists.

If you’re heading into the backcountry, please consider submitting a MIN report—observations are particularly limited this time of year.

Snowpack Summary

In alpine terrain, up to 40 cm of recent snow continues to settle and bond atop crusty surfaces in all but high-alpine north-facing slopes, where a crust below the recent snow is unlikely. Deeper deposits of wind-loaded snow can be found in leeward terrain from recent southwesterly winds.

In most areas at treeline and below, the upper snowpack is moist, and possibly even isothermal at low elevations.

Check out this Conditions Update video for tips on managing the current spring conditions.

Weather Summary

Saturday Night
Cloudy. 2 to 4 mm of precipitation as snow or rain at treeline. 30 km/h south ridgetop wind. Treeline temperature 0 °C. Freezing level 1300 m.

Sunday
Cloudy. 1 to 5 mm of precipitation as snow or rain at treeline. 40 km/h west ridgetop wind. Treeline temperature 1 °C. Freezing level 1400 m.

Monday
Mostly cloudy. 1 mm of rain at treeline. 40 km/h west ridgetop wind. Treeline temperature 2 °C. Freezing level 1600 m.

Tuesday
Mix of sun and clouds. 1 to 2 mm of precipitation as snow or rain at treeline. 30 km/h west ridgetop wind. Treeline temperature 0 °C. Freezing level 1200 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.
  • Back off slopes as the surface becomes moist or wet with rising temperatures.
  • Use extra caution around cornices: they are large, fragile, and can trigger slabs on slopes below.

Regioni coperte