Lawinenlagebericht

South Columbia

Jan 28 – 29, 2016Avalanche Canada
Auf der Karte ansehen
Archiviert · abgelaufen 11 years ago

Lawinengefahr

Sat
Sun
Hochgebirge
3 · Erheblich
Waldgrenze
3 · Erheblich
Unterhalb
2 · Mässig
Vollständige Karte öffnen

Kernpunkte

Continued conservative decision making is recommended as the snowpack settles and adjusts to the recent load and warming.

Lawinenprobleme

  • Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    2–5
    Surface hoar buried at the beginning of January remains primed for human triggers. The potential for widespread propagation and remote triggering makes this persistent slab particularly tricky to manage.

  • Storm Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Likely
    Größe
    1–3
    Fresh storm and wind slabs are sensitive to human triggers an particulary touchy where they are bonding poorly to recently buried surface hoar or crust.

Confidence

High

Weather Forecast

FRIDAY: A mix on sun and cloud with isolated light flurries. Freezing levels dropping to 1200m and light southwesterly winds. SATURDAY: A mix of sun and cloud but mainly dry. Freezing levels dropping to 1000m and light northwesterly winds. SUNDAY: A mix of sun and cloud and mainly dry with freezing levels dropping below valley bottoms and light northwesterly winds.

Avalanche Summary

Reports from Wednesday include a isolated storm and wind slab avalanches up to Size 2 from natural, skier and explosive triggers.

Snowpack Summary

Weaknesses exist within and under the 30-50cm of recent storm snow, which is particularly deep and touchy on wind-loaded slopes in alpine and exposed treeline areas, and bonding poorly to buried surface hoar where it wasn't destroyed by wind or a crust at lower elevations. The persistent weak layer of buried surface hoar, sun crusts, rime crusts and/or facets that was buried in early January is now down about 50-100 cm. The overlying slab remains primed for triggering and is especially touchy at and below treeline. Below that, the snowpack is well settled and strong.

Abgedeckte Regionen