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 21 – 22, 2016Parks Canada
Archived · expired 10 years ago
Avalanche danger
Sat
Sun
Alpine
No rating
Treeline
No rating
Below
No rating
Highlights
The heat wave is over! Heavy rain is expected on Friday. This will trigger further avalanche activity. What's on Netflix?
Avalanche problems
Loose Wet
NNEESESSWWNW- Alpine
- Treeline
- Below treeline
- Likelihood
- Very Likely
- Size
- 1–3
Warm overnight temperatures, freezing levels up to 3300m and 12mm of rain will keep the snowpack warm. Continued loose wet avalanches are expected on Friday.
Deep Persistent Slabs
NNEESESSWWNW- Alpine
- Treeline
- Below treeline
- Likelihood
- 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
The heat wave ends!! The freezing level is expected to drop below 3000 m on Friday afternoon along with 12 mm of rain. The rain will turn to snow (5 cm) on Friday night. Seasonal temperatures with showers expected through the weekend.
Snowpack Summary
Isothermal conditions exist well into the alpine even on North aspects due to prolonged +3500m freezing level. No overnight recovery expected on Thursday night. The persistent slab problem still exists on north facing alpine slopes. Expect a very weak snowpack everywhere else.
Avalanche Summary
No recent observations however expecting continued loose wet and wet slab avalanches especially with forecasted rain on Friday.