Bollettino valanghe

North Columbia

Avalanche Canada
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Pericolo valanghe

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

In sintesi

Danger is LOW, but keep an eye out for lingering wind slabs near ridgetops and wet loose sluffs on steep, sunny slopes.

Continue to use normal caution while travelling in avalanche terrain.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1–1.5

    Triggering small wind slabs may be possible along the shady side of ridge crests and lee features where the snow remains dry. Avoid travelling on or below cornices where possible.

  • Loose Wet

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

    Warm temperatures and sun may melt the surface crust creating the potential for small wet loose avalanches. Avoid exposure to overhead steep sunny slopes once the surface has become moist or wet.

Confidence

Moderate

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

Avalanche Summary

On Friday, warm temperatures and strong sun resulted in a natural cycle of wet loose avalanches up to size 2, and some cornice falls that failed to trigger subsequent slabs.

Two large cornice failures were also reported in the region on Thursday.

Cornices are big this time of year, and sensitive to the warmth of the spring sun. With more warm temperatures and sun in the forecast, we may see some cornice failures or wet loose activity on Sunday.

Snowpack Summary

Soft, dry or wind-pressed snow can still be found on shady northerly through easterly slopes at upper elevations. These areas may have isolated lingering wind slabs. All other slopes will have a melt-freeze crust, which may soften and melt with daytime warming, creating the potential for wet loose sluffing.

Otherwise, the snowpack is generally strong and well-bonded, with no layers of concern.

Check out this recent MIN post on conditions observed at Morfee.

Weather Summary

Saturday Night
Partly cloudy. 0 to 2 cm of snow. 10 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level 1900 m falling to 1100 m.

Sunday
Mix of sun and clouds. 20 km/h west ridgetop wind. Treeline temperature 1 °C. Freezing level rising to 2000 m.

Monday
Mix of sun and clouds. 0 to 2 mm of precipitation as snow or rain at treeline. 40 km/h west ridgetop wind. Treeline temperature 1 °C. Freezing level 2000 m.

Tuesday
Cloudy. 5 to 20 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1600 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Small avalanches can have serious consequences in extreme terrain. Carefully evaluate your line for slabs before you commit to it.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • Use appropriate sluff management techniques.

Regioni coperte