Lawinenlagebericht

Jasper

Dec 4 – 5, 2024Avalanche Canada
Auf der Karte ansehen
Archiviert · abgelaufen 2 years ago

Lawinengefahr

Fri
Sat
Hochgebirge
2 · Mässig
Waldgrenze
1 · Gering
Unterhalb
1 · Gering
Vollständige Karte öffnen

Kernpunkte

Ice climbers watch for small wet avalanches due to the warm temperatures. Even small avalanches can be a problem in or above terrain traps.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    1–2

    Expect windslabs at exposed ridgetop features.

  • Loose Wet

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    1–2

    Watchout for warm temperatures over the next few days especially with the shallow snowpack. Small wet avalanches can be a problem if you are exposed ice climbing or above a terrain trap.

  • Deep Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    1–2.5

    This layer is most reactive where it has been loaded by wind transported snow. This problem includes the Oct 18 crust and the Nov 8th crust and surface hoar. There’s uncertainty around its distribution and triggerability.

Confidence

Moderate

Avalanche Summary

Old windslab avalanches were observed on Tuesday at ridge top on a flight from Tangle Ridge to Jasper. A field team in the Bald Hills ski cut released a size 1 windslab avalanche at ridgetop.

Snowpack Summary

There is likely wet surface snow to around 2200m due to above freezing temperatures. The Nov 8 crust and facets are down 20-30 cm at tree-line and below. We have also found surface hoar (6mm) down 60cm at 2500m also burried on Nov 8th. The October crust is widespread and is found near the base of the snow pack and has facets above and below. Snow depth is roughly 70 cm at treeline and tapers rapidly below.

Weather Summary

Wednesday

Mainly cloudy with isolated flurries.

Precipitation: Trace.

Alpine temperature: High 0 °C.

Ridge wind west: 10-20 km/h.

Freezing level: 2200 metres.

Thursday

Mainly cloudy.

Precipitation: Nil.

Alpine temperature: Low -6 °C, High -1 °C.

Ridge wind west: 15 km/h.

Freezing level: 1900 metres.

Terrain and Travel Advice

  • Be careful as you transition into wind-affected terrain.
  • Seek out sheltered terrain where new snow hasn't been affected by wind.
  • Small avalanches may cause climbers to fall or bury belayers and gear.

Abgedeckte Regionen