Bollettino valanghe

Lizard-Flathead

Feb 22, 2018Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 9 years ago

Pericolo valanghe

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

In sintesi

Caution if the sun comes out - avoid steep sunny slopes where the snow will lose cohesion.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2
    WInd slabs can be found on many slopes at treeline and above.

Confidence

Moderate - Due to the number of field observations

Weather Forecast

THURSDAY: Mix of sun and cloud. Freezing level at valley floor. Light to moderate winds.FRIDAY: Mix of sun and cloud. Freezing level at valley floor. Light to moderate winds.SATURDAY: Mix of sun and cloud. Freezing level at valley floor. Light to moderate winds.

Avalanche Summary

Its been fairly quiet the last couple of days, with only reports of explosives triggering small storm slabs.

Snowpack Summary

You are likely to find variable surfaces in open terrain after recent strong winds took out their fury on the upper snowpack. Fragile cornices and hard and soft wind slabs can be found on many alpine and treeline slopes. Ongoing cold temperatures are helping to break down and soften these.A crust/surface hoar interface is about 40-60 cm down, but is spotty in distribution. In sheltered areas where the surface hoar exists, it is reactive in snowpack tests. Deeper in the snowpack, the widespread mid-December weak layer sits about 120-160 cm deep. This consists of a crust, facets or surface hoar. Near the base of the snowpack, a crust/facet layer could be awoken from a thin-spot trigger point, or with a very large load.

Regioni coperte