Lawinenlagebericht

Jasper

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

Lawinengefahr

Thu
Fri
Hochgebirge
2 · Mässig
Waldgrenze
2 · Mässig
Unterhalb
2 · Mässig

Kernpunkte

The new snow will require several days to stabilize, a cautious approach to avalanche terrain is recommended.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–2.5
    Fresh windslabs sit on a variety of old surfaces, these will take several days to settle and stabilize.
  • Loose Dry

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    1–2.5
    Natural triggering has abated but human triggering remains a possibility, particularly in steep sheltered terrain.

Weather Forecast

A westerly flow continues and a much weaker front will track through bringing light precip and rising freezing levels for Thur and Fri. Wednesday: A mix of sun and cloud. Alpine low -12C, High -10 C. Ridge wind light west.

Snowpack Summary

Up to 15cm of new snow came in with strong to extreme SW winds. Previous old surfaces were; loose facets in sheltered terrain; wind affected in exposed areas; and, sun crust to treeline on solar aspects. The mid/lower snowpack is relatively strong for the region in deeper snowpack areas, and weak and facetted in shallow snowpack areas.

Avalanche Summary

A group of skiers triggered a large windslab avalanche in the backcountry near Marmot Basin Tuesday.A widespread cycle of small-large loose dry avalanches occurred Monday night during the snow and wind storm - these started small, but scrubbed down in to the facets.Several large windslab avalanches on alpine NE aspects also ran during the storm.

Confidence

Abgedeckte Regionen