Wind Slabs
N
NE
E
SE
S
SW
W
NW
- Alta quota
- Limite del bosco
- Sotto il limite del bosco
- Probabilità
- Possible
- Dimensione
- 1–2.5
Bollettino valanghe
Vedi sulla mappaJasper
Nov 30 – Dec 1, 2021
Archiviato · scaduto 5 years ago
Pericolo valanghe
Wed
Thu
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
2 · Moderato
In sintesi
On Tuesday afternoon the Icefields Parkway from Athabasca Falls to Saskatchewan Crossing will be closed. A significant winter storm is forecasted for Jasper. Please plan to be out of the closure by 15:00.
Problemi valanghivi
Loose Dry
NNEESESSWWNW- Alta quota
- Limite del bosco
- Sotto il limite del bosco
- Probabilità
- Possible
- Dimensione
- 1–2
Deep Persistent Slabs
NNEESESSWWNW- Alta quota
- Limite del bosco
- Sotto il limite del bosco
- Probabilità
- Possible
- Dimensione
- 1.5–3
The average 1 meter snowpack has a crust near the ground surrounded by weakening large grain facets. This is a layer to watch as our neighbors are experiencing activity on it.
Weather Forecast
Tuesday:
Periods of snow.
Accumulation: 15 cm.
Alpine temperature: High -3 C.
Ridge wind southwest: 25 km/h gusting to 60 km/h.
Freezing level: 1700 metres.
Wednesday:
Snow, heavy at times.
Accumulation: 42 cm.
Alpine temperature: Low -3 C, High -1 C.
Ridge wind southwest: 20 km/h gusting to 65 km/h.
Freezing level: 2000 metres.
Snowpack Summary
Around 25cm of new snow in the last 36 hours. Moderate SW winds are creating new thin wind slabs in alpine lees over old hard wind slab or previous wind scoured rock. The mid-pack is around 80cm thick above a thin crust near the ground in some locations. Rain and warm temperatures are eating away the snowpack at the lower elevations.
Avalanche Summary
Explosive control on Parker Slabs on Monday produced thin wind slabs not propagating far. A few small natural slab avalanches out of steep lee features were also observed. Also a notable large avalanche off Whistler Mountain running to mid path near Jasper.