Bulletin d’avalanche

Waterton Lakes

Dec 27 – 31, 2013Parks Canada

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Archivé · expiré 13 years ago

Danger d’avalanche

Sat

Sun

Alpin

2 · Modéré

Limite forestière

2 · Modéré

Sous la limite

1 · Faible

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Points saillants

The early season conditions still present a considerable risk, be careful of rocks and stumps that are lurking under the snow surface. The danger could increase with new snow on Friday night, especially if we receive more than the 5 cm forecast.

Problèmes avalancheux

Wind Slabs
N
NE
E
SE
S
SW
W
NW
Alpin
Limite forestière
Sous la limite forestière
Probabilité
Possible - Likely
Taille
1–2
Recent strong SW winds have built windslabs at ridgelines and gully features. Warm temperatures have likely helped strengthen these slabs but triggering is still a possibility.
Persistent Slabs
N
NE
E
SE
S
SW
W
NW
Alpin
Limite forestière
Sous la limite forestière
Probabilité
Unlikely - Possible
Taille
1–3
Weak snow associated with crusts formed in Mid and early November can be found down about 70cm. This seems to be less significant on Southerly aspects. Triggering planar slopes from thin areas remains a possibility to consider.

Weather Forecast

A cold front forecast to pass over the area in Friday night will drop temperatures and bring some precipitation. Ahead of the front there could be some rain but as the temperatures drop there could be up to 10 cm of new snow. . Winds should die down and switch to the northeast with the passing of the front.

Snowpack Summary

Extreme SW winds over the last 24 hrs and warm temps have created hard slabs with the remainder of the snow from earlier this week. Gullies and wind loaded features have a series of windslabs with all wind exposed slopes scoured. The Faceted Crystals associated with the Nov Crusts are buried 50 to 70 cm, a weak layer that remains of interest.

Avalanche Summary

No new avalanche activity has been observed.

Confidence

Due to the number of field observations

Régions couvertes

Waterton Lakes