Lawinenlagebericht

Cariboos

Mar 10 – 11, 2024Avalanche Canada
Auf der Karte ansehen
Archiviert · abgelaufen 3 years ago

Lawinengefahr

Tue
Wed
Hochgebirge
3 · Erheblich
Waldgrenze
3 · Erheblich
Unterhalb
2 · Mässig

Kernpunkte

Choose conservative, low consequence terrain.

Rider and remote triggering of large avalanches are an ongoing concern.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Likely
    Größe
    1–2.5

    Southerly winds and new snow will add to the wind slab problem. These avalanches have the potential to step down to deeper weak layers.

  • Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    2–3

    A weak layer of facets rests above a hard-melt freeze crust that formed early February. This layer remains in the depth for human triggering.

Confidence

Moderate

Avalanche Summary

Avalanche activity has been tapering off for the past few days. Generally only small rider and remotely triggered avalanches have been reported. The exception is one size 3 natural wind slab on a steep northeast alpine feature on Saturday. Despite this trend we remain concerned about the early February crust/facet layer and expect it to remain rider triggerable.

Snowpack Summary

Strong winds have formed wind slab on northerly aspects and scoured south facing terrain above treeline. The snow surface will likely become moist at lower elevations.

Two layers of surface hoar and sun crust can be found in the top meter of the snowpack. One from late February and the other from early March.

A thick and hard widespread crust that formed in early February is buried about 70 to 120 cm deep. This crust has a layer of facets above it in many areas.

The snowpack below this crust is generally not concerning except in shallow alpine terrain.

Weather Summary

Sunday Night

A mix of clear skies and cloud with 1 to 3 cm of new snow. 20 to 40 km/h south alpine wind. Treeline temperature -6°C.

Monday

Mostly cloudy with up to 5 cm of new snow. 15 to 35 km/h south alpine wind. Treeline temperature -4°C.

Tuesday

Mostly cloudy with up to 5 cm of  new snow. 10 to 30 km/h south alpine wind. Freezing level up to 1700 m.

Wednesday

Mostly sunny with trace amounts of new snow. 10 to 25 km/h west alpine wind. Treeline temperature -2°C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Conservative terrain selection is critical, choose only well supported, low consequence lines.
  • Remote triggering is a concern, watch out for adjacent and overhead slopes.
  • Be aware of the potential for surprisingly large avalanches due to deeply buried weak layers.
  • If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.

Abgedeckte Regionen