Bollettino valanghe

Kootenay Boundary

Avalanche Canada
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Pericolo valanghe

Mon
Tue
Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
2 · Moderato
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Non aggiornato — questo bollettino è scaduto 5 months ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Wet slabs may start to occur as heat and sun affect the snow above a crust.

Start early and plan to be away from sunny slopes by midday.

Problemi valanghivi

  • Cornices

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

    Cornices are unpredictable and are more likely to fail in warm periods. Avoid travelling on or under them.

  • Loose Wet

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

    If the sun comes out, it will likely trigger wet loose avalanches on steep sunny slopes.

  • Wet Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    2–3

    Clear skies and warm temperatures may cause wet slabs to fail on the thick crust from the March rain.

Confidence

Moderate

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

Avalanche Summary

On Friday, there were many small, natural, loose wet avalanches, as well as a few small skier-controlled wind slabs.

On Thursday, numerous small wet loose avalanches were reported. Both natural and rider-triggered.

Near Fernie, several large (size 2) storm slabs were triggered with explosives.

Snowpack Summary

A new surface crust has likely formed on slopes that face the sun. Around 10 to 20 cm of new snow fell on Thursday, which sits on a thin melt-freeze crust.

A thick crust is buried 30 to 40 cm deep, which makes it unlikely to trigger any weak layers that persist below it in the upper snowpack.

The mid and lower snowpack is strong in most areas. Snowpack depth tapers rapidly at lower elevations.

Weather Summary

Saturday Night
Mostly clear skies. 20 km/h west ridgetop wind. Treeline temperature 0 °C. Freezing level 2100 m.

Sunday
Mostly sunny. 10 km/h west ridgetop wind. Treeline temperature 2 °C. Freezing level rising to 2700 m.

Monday
Mix of sun and clouds. 1 to 3 mm of rain at treeline. 20 km/h southwest ridgetop wind. Treeline temperature 4 °C. Freezing level 2800 m.

Tuesday
Mix of sun and clouds. 2 to 10 mm of precipitation, starting as rain and slowly turning to snow. 40 km/h west ridgetop wind. Treeline temperature 0 °C. Freezing level falling to 1600 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Start your day early and be out of avalanche terrain during the heat of the day.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.
  • Keep in mind that the high density of wet avalanches can make them destructive.

Regioni coperte