Wind Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible - Likely
- Size
- 1–2
Expect slab development immediate to lee ridge lines and cross loaded features. Bonding should be suspect, progress cautiously into steeper terrain.
Avalanche forecast
View on mapJasper
Mar 5 – 6, 2016Parks Canada
Archived · expired 11 years ago
Avalanche danger
Sat
Sun
Alpine
3 · Considerable
Treeline
2 · Moderate
Below
1 · Low
Highlights
Avalanche problems
Persistent Slabs
NNEESESSWWNW- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible - Likely
- Size
- 1–3
Persistent weak layers of decomposed surface hoar, facets, and depth hoar are in many locations. These layers have been stubborn to trigger underfoot but could be triggered by cornice failure or from shallow spot and release to ground.
Weather Forecast
Light scattered flurries throughout the weekend, amounting to 10cm by Sunday evening. Temperatures to remain cool above treeline, with good overnight recovery. Winds expected to be in the moderate range from the Southwest, gusting to strong. Freezing levels will creep up to 2100m during the heat of the day.
Snowpack Summary
New thin wind slab on lee and crossloaded terrain above 2000m. Persistent weak layer down 40-70cm remains a concern but has been dormant of late. Snowpack is facetted at lower elevations, making for difficult travel. Depth hoar is widespread and is a potential sliding layer with large triggers such as cornice fall or other avalanches.
Avalanche Summary
Several reports of remotely triggered slab avalanches in the alpine in wind loaded areas up to size 2 over the past 72 hours. These slides went on old snow and are especially prevalent in areas that have not seen skier traffic this winter.