Cornices
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Likely
- Size
- 1–2
All cornices should be suspect for failure with continuing warm temperatures and rain on Friday.
Avalanche forecast
View on mapJasper
Apr 22 – 23, 2016Parks Canada
Archived · expired 10 years ago
Avalanche danger
Sun
Mon
Alpine
No rating
Treeline
No rating
Below
No rating
Highlights
Heavy wet snow expected through the weekend that will fall on a weak isothermal snowpack. Expect poor tree-line travel.
Avalanche problems
Loose Wet
NNEESESSWWNW- Alpine
- Treeline
- Below treeline
- Likelihood
- Likely
- Size
- 1–3
Rain and heavy snow overnight on Friday will continue the loose wet avalanche cycle.
Deep Persistent Slabs
NNEESESSWWNW- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible - Likely
- Size
- 3–4
This problem primarily remains on alpine slopes as much of the lower snowpack has either melted or is now isothermal.
Weather Forecast
Rain turning to snow overnight with 10 cm possible. The freezing level will fall on Saturday and will hover around 2200m through the weekend. Seasonal temperatures with showers expected through the weekend.
Snowpack Summary
Rain changing to snow overnight adding ~10 cm of heavy wet snow. Isothermal conditions exist well into the alpine due to prolonged +3500m freezing level. Expecting a weak overnight recovery above 2500m on Friday night. The persistent slab problem still exists on north facing alpine slopes.
Avalanche Summary
No recent observations however expecting continued loose wet and wet slab avalanches especially with forecasted rain and wet snow through the weekend.