Storm Slabs
N
NE
E
SE
S
SW
W
NW
- Alta quota
- Limite del bosco
- Sotto il limite del bosco
- Probabilità
- Likely
- Dimensione
- 1–4
Recent new snow has built slabs over a touchy layer of buried surface hoar crystals, creating dangerous avalanche conditions.
Bollettino valanghe
Vedi sulla mappaPurcells
Dec 22 – 23, 2014Avalanche Canada
Archiviato · scaduto 12 years ago
Pericolo valanghe
Wed
Thu
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
3 · Marcato
In sintesi
It's easy to trigger avalanches right now. Conditions are expected to deteriorate further before Christmas. Play safe.
Problemi valanghivi
Deep Persistent Slabs
NNEESESSWWNW- Alta quota
- Limite del bosco
- Sotto il limite del bosco
- Probabilità
- Unlikely - Possible
- Dimensione
- 3–5
In some parts of the region, large avalanches have been failing on a deeply buried weak layer.
Avalanche Summary
On Sunday, several size 2-2.5 naturally-triggered avalanches were reported. Storm slabs were also triggered by explosives and a skier. Both failed on buried surface hoar.
Confidence
Fair - Forecast snowfall amounts are uncertain
Weather Forecast
Expect moderate snowfall on Tuesday (5-20cm) with moderate to strong south-westerly winds and freezing level around 1200m. A cooler northwest flow may bring light snow or flurries on Wednesday and Thursday.
Snowpack Summary
Anywhere from 20-60cm of recent storm snow overlies a touchy layer of buried surface hoar, which sits on a crust below about 2100m. Winds from the north-west through south-west have created wind slabs, which are very reactive where they overlie the buried surface hoar. A lower layer of surface hoar is also reactive at the northern end of the range, buried down about 40cm. A hard rain crust with facets from early November is buried over 1 m down and is still reactive to light loads in some locations.