Bollettino valanghe

North Rockies

Dec 20 – 21, 2023Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 3 years ago

Pericolo valanghe

Fri
Sat
Alta quota
3 · Marcato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole
Apri la mappa completa

In sintesi

Watch for storm and wind slab development Wednesday, while buried layers of surface hoar lurk deeper within the snowpack.

Problemi valanghivi

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2.5

    Buried surface hoar layers will become more concerning as new snow accumulates and forms cohesive slabs above.

  • Storm Slabs

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

    As new snow accumulates throughout the day, surface slabs will increase in size and reactivity. Deeper deposits of cohesive snow will be likely in leeward terrain features.

Confidence

Moderate

Avalanche Summary

No new avalanches have been reported. There are very few field observations coming from this forecast area. Remember that a lack of avalanche reports does not necessarily mean a lack of avalanche activity.

If you go out in the backcountry, please consider sharing your observations on the Mountain Information Network (MIN).

Snowpack Summary

New snow continues to bury a variety of previously wind-affected surfaces.

A problematic layer of surface hoar is roughly 30 to 60 cm below the surface.

The mid snowpack likely contains multiple frozen crusts, while the lower snowpack is generally faceted. Average snowpack depths at treeline range from 50 to 100 cm.

Weather Summary

Tuesday Night

Cloudy with 5 to 15 cm of snow, southwest alpine winds 40 to 60 km/h, treeline temperature -3 °C.

Wednesday

Cloudy with 5 to 10 cm of snow, southwest alpine winds 60 to 70 km/h, treeline temperature -1 °C.

Thursday

Cloudy with 10 to 20 cm of snow, southwest alpine winds 60 to 70 km/h, treeline temperature 0 °C.

Friday

Cloudy with 5 to 15 cm of snow, southwest alpine winds 50 to 70 km/h, treeline temperature -2 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Choose conservative terrain and watch for clues of instability.
  • Avoid areas where the snow feels stiff and/or slabby.
  • Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.

Regioni coperte