Lawinenlagebericht

Jasper

Feb 12 – 13, 2019Parks Canada
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Archiviert · abgelaufen 8 years ago

Lawinengefahr

Wed
Thu
Hochgebirge
2 · Mässig
Waldgrenze
2 · Mässig
Unterhalb
2 · Mässig
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Kernpunkte

Cold temperatures continue to weaken the snowpack, especially in shallow areas.  The current avalanche problems will persist until this pattern changes.

Lawinenprobleme

  • Loose Dry

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    1–2
    Cold temperatures continue to weaken the surface snow.  Expect sluffing out of steep rocky terrain.

  • Deep Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1.5–3.5
    This is still present and could still be triggered from shallow snowpack areas. See MIN report.

Snowpack Summary

50cm from Feb 2nd was followed by strong N winds. Ongoing cold temps have weakened the structure of the slab over the persistent weakness below, which consists of surface hoar, crusts, and/or facets. The basal snowpack is structurally weak in shallow areas, consisting primarily of facets/depth hoar (ongoing cold temps are not helping).

Avalanche Summary

Several loose dry avalanches up to size 2 have been naturally triggered in the facetting snowpack in steep shallow areas over the past 2-3 days. On Feb 7th, a size 2 deep persistent slab was triggered by skiers in the Maligne area on a W aspect, 1950m, on a 30 degree slope (see MIN).

Confidence

Weather Forecast

Lows on the South Coast will usher in scattered high cloud and possibly some flurries.Tuesday: Mainly cloudy with flurries. Light winds. Alpine temps Low -21°C, High -17°C.Wednesday: Mix of sun and cloud, Light winds. Alpine temps Low -18°C, High -13°C.A detailed mountain weather forecast is available from Avalanche Canada.

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