Boletín de aludes

Jasper

Mar 12 – 13, 2016Parks Canada

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Archivado · caducó 11 years ago

Peligro de aludes

Sat

Mon

Alta montaña

3 · Notable

Límite del bosque

3 · Notable

Bajo el límite

1 · Débil

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Lo esencial

Don't be fooled by the lack of natural activity. The weakness around the buried persistent slab is still lurking in the snowpack and is most likely triggered in Portal/Whistler Creek and Maligne Lake Areas.

Problemas de aludes

Wind Slabs
N
NE
E
SE
S
SW
W
NW
Alta montaña
Límite del bosque
Bajo el límite del bosque
Probabilidad
Possible
Tamaño
1–2
Uniform wind slab has formed on most lee alpine and tree line slopes and cross-loaded features.
Persistent Slabs
N
NE
E
SE
S
SW
W
NW
Alta montaña
Límite del bosque
Bajo el límite del bosque
Probabilidad
Possible - Likely
Tamaño
1–3
This problem is most active in the Maligne and surrounding Jasper area where the average snow pack is shallow but is proving much less active in the Icefields area.

Weather Forecast

Clear and freezing level rising to over 2000 m on Saturday then an intense but short storm Saturday night with heavy snow, falling freezing level and strong South winds dropping up to 10 cm. Temperatures remain cool on Sunday and snow with light winds on Monday.

Snowpack Summary

Maligne/Jasper: Variable snow depth above tree-line, relative to exposure. Average HS 70cm. Surface wind slabs and persistent slab down 40-90cm. Icefields: Variable snow depth above tree-line, relative to exposure. Average HS 120cm. Widespread wind slabs overlaying supportive mid pack and weak base.

Avalanche Summary

Field team in the Icefields noted a few size 2 slab avalanches on cross-loaded Alpine features, west aspect. Whumphing and cracking noted below tree line around Bald Hills. Marmot reported little in the way of natural activity around the ski hill today except a cornice initiated slab on Sherpa.

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Saturday

Regiones cubiertas

Jasper