Wind Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–2
New surface windslab developing with moderate to strong S-Swly winds. Look for these on northerly aspects at ridge top and open areas.
Avalanche forecast
View on mapJasper
Apr 5 – 6, 2016Parks Canada
Archived · expired 10 years ago
Avalanche danger
Thu
Fri
Alpine
No rating
Treeline
No rating
Below
No rating
Highlights
Dust on crust and moderate west winds for Wednesday. Keep to slopes where the crust maintains strength enough to hold the rider.
Avalanche problems
Cornices
NNEESESSWWNW- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–2
Cornice failures are becoming more frequent lately. New snow and moderate West winds will increase size.
Deep Persistent Slabs
NNEESESSWWNW- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 2–4
Cooling temperatures will reduce the likelihood of triggering this problem. Shallow areas are likely trigger spots.
Weather Forecast
Cloudy with scattered flurries with forecasted accumulation of 4cm. Alpine temperatures expected near +1 C with gusty moderate west winds keeping everything cool.
Snowpack Summary
Cold temps developing a strong surface crust (20cm to 3cm at 2100m) at tree-line and below. Isothermal snowpack with that crust holding up through the day Tues. making travel easy. Persistent slab, 30 to 70cms thick, reacting to compression tests on facets in the low moderate range. Expect to see this more reactive underfoot as crust breaks down.
Avalanche Summary
New and old activity to size 2.5, mostly on solar aspects observed by field teams today along the Icefields Parkway. Mix of loose wet and slab avalanches observed.