Wind Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Likely
- Size
- 1–3
Recent SW winds have created touchy wind slabs on lee alpine and treeline terrain. These wind slabs are reactive to skier triggering.
Avalanche forecast
View on mapBanff Yoho Kootenay
Feb 20 – 21, 2014Parks Canada
Archived · expired 13 years ago
Avalanche danger
Thu
Fri
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
3 · Considerable
Highlights
The storm snow still needs time to settle and bond. Conservative route choices are still advised.
Avalanche problems
Persistent Slabs
NNEESESSWWNW- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible - Likely
- Size
- 2–3
The recent storm snow is settling but a poor bond still exists on the storm snow interface. Natural activity has decreased but it is still possible for skiers to trigger this layer.
Weather Forecast
Mainly cloudy with isolated flurries through to Friday. Alpine temperatures reaching a high of -9. Light southwest winds with moderate gusts.
Snowpack Summary
30 -70 cm of recent storm snow is settling and overrides the Feb 10th interface. A poor bond persists at this interface and many avalanches have been observed on this layer over the past week. Recent SW winds have created wind slabs in lee alpine terrain. These wind slabs are easily triggered and often step down to the Feb 10th interface.
Avalanche Summary
The natural avalanche cycle seems to have subsided, however many skier triggered wind slabs up to Class 1.5 were reported today. A size 3 natural off of Mt. Wapta was observed yesterday and explosive control work today on the Yoho Highway Paths resulted in several Class 2.5's and one Class 3 all running in the storm snow.