Lawinenlagebericht

Banff Yoho Kootenay

Apr 9 – 10, 2014Parks Canada
Auf der Karte ansehen
Archiviert · abgelaufen 12 years ago

Lawinengefahr

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

Kernpunkte

Spring conditions are arriving. High North terrain offers the best skiing and early starts and finishes are important. Daytime heating will increase the hazard especially in thin snowpack or rocky areas where the basal facets could be triggered.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–2
    Gusty SW winds have formed new wind slabs in immediate lee areas. 

  • Cornices

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–2
    Several natural cornice failures have been observed in the last two days caused by new snow loading and warm temperatures. Minimize exposure to overhead cornices.

  • Deep Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    2–3
    Daytime warming in thinner snowpack areas or larger triggers such as cornices may trigger this weakness. Thin rocky snowpack areas may also be susceptible to skier triggering.

Weather Forecast

Thursday will have some light flurries with gusty West winds and alpine temperatures between -11'C and -2'C.  Friday will also have light flurries, freezing levels around 1800m and gusty west winds.  Saturday is a mix of sun and cloud with light winds and alpine temperatures between -6'C and 0'C.

Snowpack Summary

Moist snow to 2000m on all aspects and to ridge top on solar aspects. Wind slabs forming in open areas. Western areas such as Emerald and Field have a deep and stable snowpack. The Lake Louise, Hwy 93 N, & Sunshine areas have a weaker snowpack and we are still getting easy to moderate sudden collapse results on the basal depth hoar in some areas.

Avalanche Summary

Cascade Waterfall and Rogans gulley both produced size three avalanches to ground yesterday afternoon during the warm up. Several other natural slides to ground in shallow areas have been reported by our nearest neighbors today as well as a few natural cornice failures. These will continue to occur with daytime heating over the next day or two.

Confidence

Abgedeckte Regionen