Lawinenlagebericht

Banff Yoho Kootenay

Jan 3 – 4, 2013Parks Canada
Auf der Karte ansehen
Archiviert · abgelaufen 14 years ago

Lawinengefahr

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

Kernpunkte

An inversion is creating warm alpine temperatures even though it is cold in the valleys. This, combined with moderate to strong SW/W winds will raise the hazard on Thursday.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    1–2
    Localized moderate winds have created hard windslabs in exposed alpine terrain. Although these have not been reactive to human traffic, they may become more reactive as the alpine temps increase.

  • Cornices

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–2
    The cold temperatures are facetting out cornices and large cornice failures have been observed. Although the cornice failures have not been triggering slabs on the slopes below, the cornice chunks themselves would definitely hurt if they hit you

  • Loose Dry

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–2
    This problem exists mainly in thin snowpack areas E of the divide where the snowpack has completely facetted and lost all cohesion. Watch for sloughing in steep terrain where the snow is unsupportive, particularly as temps increase.

Weather Forecast

Thurs: Inversion with alpine temps in the 0 /-5 range. M-S SW/ W alpine winds. Clear skies.Fri: Inversion breaks down. Alpine temps -10/-15. M-S W/NW alpine winds. Overcast with possibility of 1-2cms.Sat: Alpine temps -5/-10. L-M SW alpine winds. Clear skies.

Snowpack Summary

Hard wind slabs exist in exposed alpine features but haven't been reactive to skier traffic. Suface hoar is growing in sheltered treeline locations. W of the divide, a well settled snowpack exists with the basal Nov 6 crust well bonded. In the front ranges E of the divide, a facetted snowpack exists with the Nov 6 basal crust being mainly facetted.

Avalanche Summary

No new avalanche activity.

Confidence

Wind speed and direction is uncertain on Friday

Abgedeckte Regionen