Bulletin d’avalanche

Long Range Mountains

Avalanche Canada
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Danger d’avalanche

Sun
Mon
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
Sans niveau
Périmé — ce bulletin a expiré 6 months ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

Use caution in wind affected terrain and keep an eye out for blowing snow.

New snow and wind will likely form small slabs in steep lee features.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–1.5

    Small but reactive wind slabs are expected to form on east and south aspects during the day on Saturday. New snow and wind may also increase the likelihood of cornices failing.

Confidence

Moderate

  • We are uncertain due to the variability of wind effect on the snowpack.
  • We are confident the likelihood of avalanches will increase with the forecast weather.

Avalanche Summary

No recent avalanches have been reported. thank you to everyone who filled out a Mountain Information Network report this week.

Snowpack Summary

By Saturday afternoon 10 to 20 cm of new snow could overlie a thin crust in sheltered features, a layer of surface hoar may also exist at this interface. Ridge tops are expected to be scoured back to this crust on north and west aspects, while cornices and deep pockets of wind deposited snow are expected on south and east facing slopes.

Several other thin crusts exist in the upper snowpack, but they are not currently a concern. The remainder of the snowpack is well settled and bonded. Snowpack depth in the hills ranges from 110 to 150 cm in sheltered terrain.

Weather Summary

Friday Night

Mostly cloudy with up to 2 cm of snow. 25 to 40 km/h west ridge top wind. Treeline temperature -15°C.

Saturday

Mostly cloudy with 2 to 4 cm of snow. Northerly ridgetop wind increasing throughout the day to 70 km/h in the afternoon. Treeline temperature -4°C.

Sunday

Mix of sun and cloud. 20 to 40 km/h northeast ridgetop wind. Treeline temperature -9°C.

Monday

Mix of sun and cloud with trace amounts of snow. 15 to 30 km/h east ridgetop wind. Treeline temperature -9°C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Seek out sheltered terrain where new snow hasn't been affected by wind.
  • Strong wind is building wind slabs farther downslope than usual.
  • Pay attention to the wind; once it starts to blow, sensitive wind slabs are likely to form.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Régions couvertes