Bollettino valanghe

Kootenay Boundary

Avalanche Canada
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Pericolo valanghe

Tue
Wed
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

Watch for changing conditions as you change aspect and elevation.

The highest danger will be on steep slopes either facing the sun, or where dry snow isn't sticking to the underlying crust.

Problemi valanghivi

  • Cornices

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

    Cornices are more likely to fall when the daytime temperature is at its highest and the sun is out.

  • Storm Slabs

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

    Where powder snow prevails, check the bond of the new snow to old surfaces, especially around ridgelines or steep entrances. Warm temperatures may also increase the cohesion and reactivity of lingering slabs.

  • Loose Wet

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

    The likelihood of wet avalanches will increase with intense spring sun and rising freezing levels.

Confidence

Moderate

  • We are uncertain due to a limited number of field observations.
  • We are uncertain about how the timing or intensity of warming will affect the snowpack.

Avalanche Summary

On Saturday, small (size 1-1.5) natural wet loose avalanches were reported on steep slopes facing the sun.

With sunny skies continuing and temperatures set to rise even higher, avalanches like these should become larger and more likely.

This region is data sparse. Please consider submitting a MIN to let us know what you're seeing out there.

Snowpack Summary

Sun and rising freezing levels will turn snow moist during the day. Temperatures remain warm overnight. However, clear night skies may promote some crust formation.

Where dry snow prevails. 15 to 50 cm of recent storm snow sits on moist snow around treeline or likely on a crust in the alpine. In some areas east of Nakusp, small, weak facets have been seen on the crust.

The snow also fell with moderate to strong winds, forming deeper deposits in lee terrain features. Below 1500 m, all this precipitation fell as rain, wetting an already wet and melting snowpack.

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

Weather Summary

Sunday Night

Clear skies. 10-30 km/h west ridgetop wind, with the higher speeds occurring further east. Treeline temperature 6 °C. Freezing level 3000 m.

Monday

Sunny. 15 km/h southwest ridgetop wind, rising to 25 km/h through the day. Treeline high 10 °C. Freezing level rising to 3200 m.

Tuesday

Mostly sunny. 20 km/h southwest ridgetop wind. Treeline temperature 9 °C. Freezing level 3200 m.

Wednesday

Mostly cloudy. 1 to 5 mm of rain at treeline. 20 km/h southwest ridgetop wind. Treeline temperature 7 °C. Freezing level 3100 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.
  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • Investigate the bond of the recent snow before committing to your line.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Regioni coperte