Bulletin d’avalanche

Jasper

Feb 27 – 28, 2019Parks Canada

Voir sur la carte

Archivé · expiré 8 years ago

Danger d’avalanche

Thu

Fri

Alpin

2 · Modéré

Limite forestière

1 · Faible

Sous la limite

1 · Faible

Ouvrir la carte complète

Points saillants

Watch for a slight increase in snowpack reactivity on solar aspects Wednesday, as temperatures creep up closer to seasonal norms.

Problèmes avalancheux

Wind Slabs
N
NE
E
SE
S
SW
W
NW
Alpin
Limite forestière
Sous la limite forestière
Probabilité
Unlikely - Possible
Taille
1–1.5
Watch out for pockets of windslab in the alpine from previous SW switching to Northerly winds
Loose Dry
N
NE
E
SE
S
SW
W
NW
Alpin
Limite forestière
Sous la limite forestière
Probabilité
Unlikely - Possible
Taille
1–1.5
Isolated to steep terrain where surface snow doesn't show signs of previous wind affect.
Deep Persistent Slabs
N
NE
E
SE
S
SW
W
NW
Alpin
Limite forestière
Sous la limite forestière
Probabilité
Unlikely
Taille
1.5–2.5
Although the basal weakness (depth hoar) is generally dormant, with no recent natural loading of the snowpack, these may still be possible in isolated places.

Weather Forecast

Cold, clear and dry conditions as the arctic air rules supreme over our region.Wednesday will be sunny with cloudy periods, alpine high -9 C, Low -22 C, and LNE ridge winds.Mountain weather forecast available at Avalanche Canada.

Snowpack Summary

The upper snowpack continues to lose cohesion from facetting. Wind effect is visible in open terrain from previous SW switching to N winds. The Jan 18 layer (down 40cm) has faceted away in most places, but shows isolated sensitivity at treeline and below in the Icefields region. The midpack is mainly supportive, over depth hoar in shallow areas.

Avalanche Summary

No avalanches were observed in the Eastern part of the park today. No activity has been reported around the Icefields for several days.

Confidence

Due to the number and quality of field observations

Régions couvertes

Jasper