Lawinenlagebericht

Jasper

Jan 4 – 5, 2017Parks Canada

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Archiviert · abgelaufen 10 years ago

Lawinengefahr

Wed

Thu

Hochgebirge

2 · Mässig

Waldgrenze

1 · Gering

Unterhalb

1 · Gering

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Kernpunkte

No significant changes expected leading into the weekend.

Lawinenprobleme

Wind Slabs
N
NE
E
SE
S
SW
W
NW
Hochgebirge
Waldgrenze
Unterhalb der Waldgrenze
Wahrscheinlichkeit
Unlikely - Possible
Größe
1–3
Cold temperatures and hard slab conditions make triggering less likely. Triggering from shallow spots remains a possibility.
Persistent Slabs
N
NE
E
SE
S
SW
W
NW
Hochgebirge
Waldgrenze
Unterhalb der Waldgrenze
Wahrscheinlichkeit
Unlikely
Größe
1–3
It is less clear where this layer remains. Shallow areas are weakening and breaking down this layer by faceting with cold temps. Be diligent in your snowpack investigation.
Loose Dry
N
NE
E
SE
S
SW
W
NW
Hochgebirge
Waldgrenze
Unterhalb der Waldgrenze
Wahrscheinlichkeit
Possible
Größe
1–2
Arctic temperatures faceting the surface snow causing it to loose cohesion and release loose dry avalanches in steep alpine rocky terrain. Particularly concerning for ice-climbers in confined terrain.

Weather Forecast

Extremely cold overnight temps through the forecast area Tuesday night. Warming by mid-day to a reasonable -12. Broken skies and light winds. Some light flurries forecasted for Wednesday afternoon.

Snowpack Summary

Surface snow, alpine pockets and loaded lee features are facetting with the arctic temps and rapidly losing cohesion. Southerly slopes in the alpine have been stripped by previous SW winds and hard slab on lee features. At treeline, the snow is faceted that is barely supportive and weak in shallow areas.

Avalanche Summary

Road Patrol in the Maligne Valley. Loose dry slides up to sz 1.5 out of steep rocky terrain. Slabs up to size 2.5 noted on Mt. Cirrus above and close to the Polar Circus ice climb.

Confidence

The weather pattern is stable

Abgedeckte Regionen

Jasper