Bollettino valanghe

Cariboos

Avalanche Canada
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Pericolo valanghe

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

In sintesi

Strong sun and warming will increase the likelihood of both natural and human-triggered avalanches.

Problemi valanghivi

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1.5–2.5

    Cornices are large, looming, and can trigger large avalanches on the slopes below. Cornices will become increasingly fragile as temperatures rise.

  • Storm Slabs

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

    Winds may leave more reactive deposits around ridge lines and lee features. Strong solar radiation may increase the reactivity of recently formed storm slabs, especially on steep slopes in the alpine.

  • Loose Wet

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

    Watch for sunny skies and warm spring temperatures to trigger wet loose avalanches on solar slopes and lower elevations. Expect this problem to increase at upper elevations over the weekend alongside rising freezing levels.

Confidence

Moderate

  • We are uncertain about how the timing or intensity of solar radiation will affect the snowpack.

Avalanche Summary

On Friday, riders triggered a few slab avalanches to size 1.5, mostly on steep open slopes around ridgelines.

On Thursday, riders triggered storm slab avalanches to size 2, on northerly aspects in the afternoon.

On Tuesday and Wednesday, ridgers triggered storm and wind slabs to size 2, many on northerly aspects and steep alpine slopes. On Wednesday, a size 3.5 avalanche failed naturally in the last 24 hours on a south aspect at 2300 m, likely triggered by solar input.

Snowpack Summary

At upper elevations, wind, sun, and spring temperatures continue to impact 20 to 40 cm of recent powder. Sun and rising freezing levels will turn snow moist during the day, warm temperatures overnight will prevent a crust from forming.

Below the recent snow is a hard crust that exists on all aspects to at least 2500 m.

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

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

Weather Summary

Saturday Night

Clear skies. 20 km/h southwest ridgetop wind. Treeline temperature 2 °C. Freezing level 2200 m.

Sunday

Sunny. 20 km/h southwest ridgetop wind. Treeline temperature 3 °C. Freezing level 2500 m.

Monday

Mostly sunny. 20 km/h southwest ridgetop wind. Treeline temperature 6 °C. Freezing level 2800 m.

Tuesday

Mix of sun and clouds. 2 to 5 mm of rain at treeline. 30 km/h southwest ridgetop wind. Treeline temperature 7 °C. Freezing level 2900 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid steep, sun-exposed slopes when the air temperature is warm or when solar radiation is strong.
  • Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.
  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • Use extra caution around cornices: they are large, fragile, and can trigger slabs on slopes below.
  • Back off slopes as the surface becomes moist or wet with rising temperatures.

Regioni coperte