Lawinenlagebericht

South Coast

Mar 15 – 16, 2015Avalanche Canada
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Archiviert · abgelaufen 12 years ago

Lawinengefahr

Tue
Wed
Hochgebirge
3 · Erheblich
Waldgrenze
2 · Mässig
Unterhalb
1 · Gering

Kernpunkte

Newly formed winds slabs will present a high hazard for some time. Careful route selection is critical at this time

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Likely
    Größe
    1–4
    Recent storm snow with strong winds will have built wind-slabs on lee slopes
  • Cornices

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    1–4
    New storm snow with strong winds will have added more mass to already ripe cornices. Warm spring-like temperatures may encourage cornice failures.

Confidence

Fair - Due to the number and quality of field observations

Weather Forecast

A Pacific frontal system will pass through the extreme southern portion of BC today ( Sunday) and into early Monday leaving us with 10 to 20cm of snow at higher elevations and rain below1200m. Moderate to strong winds above 1500m will accompany this system. Tuesday should see some clearing skies and very light precipitation late in the day, then more clearing for Wednesday.

Avalanche Summary

1 size 2 storm slab observed on a NW aspect in steep alpine terrain. Limited observations from yesterday due to low ceilings and poor visibility.

Snowpack Summary

10 to 20cm of recent storm snow now lies on a variety of crusts and old wind slabs above treeline. A crust that was beginning to break down and facet was buried around March 5 and may be the one to look for in the snowpack. Much of the new snow will have been redistributed by strong winds during parts of the storm. Below treeline the snowpack has had numerous warming and rain events and should be bombproof for the most part. Rain has recently been reported to ridge tops in the Coquihalla region. Solar aspects have been reported as isothermal in some areas below 1600m.

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