Wind Slabs
N
NE
E
SE
S
SW
W
NW
- Alta quota
- Limite del bosco
- Sotto il limite del bosco
- Probabilità
- Unlikely - Possible
- Dimensione
- 1–3
Isolated new wind slabs are developing in the lee of exposed terrain features.
Bollettino valanghe
Vedi sulla mappaNorthwest Inland
Feb 12 – 13, 2012Avalanche Canada
Archiviato · scaduto 15 years ago
Pericolo valanghe
Tue
Wed
Alta quota
1 · Debole
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole
Problemi valanghivi
Confidence
Good - -1
Weather Forecast
Monday: Mainly sunny conditions, with light northwesterly winds. Freezing level at valley bottom. Tuesday: A weak frontal system will bring 2-5 cm new snow with some gusty southwesterly winds. Freezing level should rise slightly to around 500 m. Wednesday: another weak frontal system arrives late in the day, bringing further light precipitation.
Avalanche Summary
No new avalanches have been reported.
Snowpack Summary
A very light skiff of snow may have buried a surface hoar layer that lies on top of old surfaces comprising crusts and old wind slab. However, with only a centimetre or so of new snow, it's not certain that surface hoar crystals of 5 mm or more would get properly buried. Successive melt-freeze cycles have produced crusts on all aspects at lower elevations as well as on south-facing slopes higher up. The old wind slabs are no longer causing concern in most areas. A facet layer, which formed around 20th January, is buried around 60 cm and is reported to be gaining strength. It showed hard, resistant planar results in a compression test at treeline in the Hankin area on Sunday.