Bollettino valanghe

Kootenay Boundary

Dec 9, 2016Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 10 years ago

Pericolo valanghe

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

In sintesi

Watch for blowing snow at ridgetops to see where wind slabs are developing.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    2
    Increasing wind speeds and light flurries will continue to develop wind slabs at higher elevations. Wind slabs are possible on any aspect, as winds have shifted from the south to the north.

Confidence

Moderate - Wind effect is extremely variable

Weather Forecast

FRIDAY: Isolated flurries, 20-40 km/h southwest winds, alpine temperatures at -15.SATURDAY: Light flurries with up to 5 cm accumulations, 20-40 km/h southwest winds, alpine temperatures at -12.SUNDAY: Isolated flurries, 20-40 km/h west winds, alpine temperatures at -12.

Avalanche Summary

Small loose dry avalanches continue to be reported in steep terrain, but no slab avalanches have been reported since Tuesday.

Snowpack Summary

Northerly winds continue to redistributed loose snow, forming stubborn wind slabs in exposed alpine areas. New surface hoar up to 15 mm in size has been reported growing on the surface, and will continue to develop during this fair weather period. The top 25 cm of snow remains low density thanks to cold temperatures, and sits above a thin rain crust in parts of the region. The lower snowpack has been reported to be well settled. A widespread crust that was buried in November can be found 40-80 cm deep. Cold temperatures have promoted facet growth around the crust, which could make the layer reactive in shallow start zones. Snowpack depths are 130-160 cm at treeline elevations.

Regioni coperte