Wind Slabs
N
NE
E
SE
S
SW
W
NW
- Alta montaña
- Límite del bosque
- Bajo el límite del bosque
- Probabilidad
- Possible - Likely
- Tamaño
- 1–2
Lots of fresh snow and moderate southerly winds have created touchy wind slabs 40-60 cm deep in the alpine.
Boletín de aludes
Ver en el mapaBanff Yoho Kootenay
Mar 6 – 7, 2014Parks Canada
Archivado · caducó 13 years ago
Peligro de aludes
Thu
Fri
Alta montaña
4 · Fuerte
Límite del bosque
3 · Notable
Bajo el límite
3 · Notable
Lo esencial
With the recent new snow and high uncertainty with the deeper layers now is the time for conservative decision making.
Problemas de aludes
Persistent Slabs
NNEESESSWWNW- Alta montaña
- Límite del bosque
- Bajo el límite del bosque
- Probabilidad
- Possible
- Tamaño
- 1–2
Test results on the Feb 10 layer generally in the moderate range but still show lots of potential for good propagation if triggered. Recent storm snow may be enough to activate this layer (see avalanche details). Lots of uncertainly with this layer
Weather Forecast
The storm will continue through to Thursday evening with another 15 cm forecasted. High temperatures in the alpine around -3 with light winds. Mixed sun and cloud with some flurries on Friday.
Snowpack Summary
Sunshine, Kootenay and Yoho areas have received thirty to 40 cm of storm snow since March 2. Lesser amounts around Lake Louise and Bow Summit. Forty to 80 cm of settled snow on the Feb 10 interface is producing moderate sudden planar results. Fresh windslabs up to 40 cm deep in alpine are reactive to skier control.
Avalanche Summary
Numerous skier controlled winds-slabs 40-60 cm deep up to size 2 reported from Sunshine. Two significant skier triggered avalanches (Class 2 and 2.5) reported at 1700 m (east aspect) in Kootenay. These initiated 50-100 cm down on the Feb 10 interface and propagated up to 100 m. This suggests that the Feb 10 layer may be getting overloaded.
Confidence
Forecast snowfall amounts are uncertain on Thursday