Lawinenlagebericht

South Coast Inland

Mar 25 – 26, 2019Avalanche 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

Snow and wind at upper elevations Monday night is expected to build fresh wind slabs.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–1.5
    New snow combined with southwest wind will promote wind slab development in the lee of terrain features.

  • Loose Wet

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–1.5
    Rain at lower elevations Monday night and then a possibility of the sun coming out during the day may keep the surface snow wet to maintain a likelihood of triggering thin loose wet avalanches.

Confidence

Moderate - Intensity of incoming weather systems is uncertain on Tuesday

Weather Forecast

MONDAY Night: Wet snow, accumulation 5-15 cm at upper elevations / moderate to strong southwest wind / alpine temperature -3 C / freezing level 1500 m dropping to 1000 mTUESDAY: A mix of sun and cloud with isolated wet flurries / moderate southwest wind / alpine temperature -2 C / freezing level 1400 m WEDNESDAY: Mix of sun and cloud / light east wind / alpine temperature 5 C / freezing level 1800 mTHURSDAY: Mix of sun and cloud / light east wind / alpine temperature 4 C / freezing level 1800 m

Avalanche Summary

No recent avalanche activity has been reported. In the far north of the region on Friday and Saturday loose wet avalanche activity up to size 2 was reported on solar aspects. Sporadic natural slab avalanches were also reported in the alpine and treeline, but no activity was reported from north aspects.

Snowpack Summary

Up to 15 cm of new snow at upper elevations Tuesday night sits on a variety of surfaces. On higher north aspects above 2000 m it may sit on some dry, faceted snow and/or isolated old wind slabs. Most other places the new snow is sitting on either moist snow or a crust. There are still a handful of melt/freeze crusts, surface hoar and facets in the upper snowpack including the February facet interface which is down 20 to 60 cm below the surface, but all of these layers appear to have gone dormant for the time being. The snowpack at mid and upper elevations is expected to continue to gain strength as we enter a period of consecutive nights with below freezing temperatures.

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