Lawinenlagebericht

South Coast

Mar 4, 2018Avalanche Canada
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Archiviert · abgelaufen 9 years ago

Lawinengefahr

Mon
Tue
Hochgebirge
2 · Mässig
Waldgrenze
2 · Mässig
Unterhalb
1 · Gering
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Kernpunkte

Overcast skies and isolated flurries should limit the effects of the strong late-winter sun, but you should remain wary of solar aspects where the new snow rests on a buried sun crust that may remain sensitive to human triggering.

Lawinenprobleme

  • Cornices

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–3
    Continued snowfall and strong wind from around the clock has formed large cornices on many ridgelines. Cornices are inherently unstable, unpredictable, and demand respect, especially when the sun is out.

  • Storm Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–2.5
    20 to 40 cm of recent snowfall arrived with strong wind. This slab is gaining strength and settling out quickly, but you should remain wary of south facing slopes where up to 100 cm of storm snow rests on an untrustworthy buried sun crust.

Confidence

Moderate - Timing or intensity of solar radiation is uncertain on Sunday

Weather Forecast

The forecast has changed since yesterday. Sunday looks to be cloudy with a chance of flurries for the South Coast region. Monday also looks cloudy, but clouds may give way to clear skies on Tuesday. SUNDAY: Overcast, freezing level rising to around 700 m, light west wind, 1 to 5 cm of snow possible.MONDAY: Broken cloud cover, freezing level rising to around 800 m, light westerly wind, trace of snow possible.TUESDAY: Clear skies, freezing level rising to around 1000 m, light variable wind, no snow expected.

Avalanche Summary

Check out this MCR report (here) that talks about the strong late winter sun initiating natural avalanches to size 2 on Thursday. No other recent activity to report.

Snowpack Summary

The region picked up 20 to 40 cm of snow Wednesday and Thursday with moderate winds out of the east/southeast. This adds to the 50 to 70 cm that fell between Saturday and Tuesday. All of this snow rests on previously wind-affected surfaces and a sun crust on southerly aspects.A hard rain crust that extends into alpine terrain is buried about 60 to 120 cm deep. There are no substantial weak layers below the crust.Cornices have formed on many alpine ridgelines. They will become touchier as they grow in size, as temperatures rise, and as they are subject to the strong late-winter sun on clear days.

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