Lawinenlagebericht

Jasper

Apr 2 – 3, 2018Parks Canada
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Archiviert · abgelaufen 8 years ago

Lawinengefahr

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

A noticeable hiatus in the Spring transition is giving plenty of opportunity to get good riding on dry snow. Persistent instabilities will persist for the remainder of the season...Don't, don't, don't, don't! Don't you, forget about me!

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    1–2.5
    In most cases this interface presents as a manageable surface instability and is expected to go dormant pretty quickly. Pay close attention to any fellow travelers above and/or below you as enter fresh terrain.

  • Cornices

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    1.5–3
    Cornices are growing with fresh snow additions. Several failures were noted, in most cases triggering a slab below.

  • Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    1–2.5
    Wind slabs sit on a hard melt-freeze crust on solar aspects, and facets on polar aspects. Assess the bond at these interfaces carefully before committing to to a slope.

Weather Forecast

"La Nina" spring continuing (cool and moist). Next 24hrs expect continued broken skies, no significant precip and alpine temperatures to reach a high of -8°C. Light winds through the region.

Snowpack Summary

A variety of slab conditions exist on most aspects at treeline and above. 10-20cm of recent storm snow has created a settled new wind slab. This slab can be up to 30cm thick . Below this, older slabs up to 60cm thick sit on a sun-crust on solar aspects and facets on polar aspects. Below treeline the snow is shallow.

Avalanche Summary

No new avalanches reported or observed. Field team reported finding signs of lingering instability at TL; whumphing and cracking but could not get anything to initiate into a slide. 

Confidence

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