Lawinenlagebericht

Waterton Lakes

Dec 9 – 12, 2020
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Archiviert · abgelaufen 6 years ago

Lawinengefahr

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

Kernpunkte

New snow on Wednesday will hide some of the stumps and rocks still poking through our thin, early season snowpack.

Lawinenprobleme

  • Storm Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Likely
    Größe
    1–1.5

    Wed storm snow will fall on top of a melt freeze crust on solar aspects, & old wind slab on northerly aspects. Either way, expect the new snow to be reactive in steep terrain. Loose dry avalanches are possible if temperatures are colder than forecast

  • Loose Wet

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–2

    This problem is our primary concern on wednesday with high freezing levels and 5-10mm of precipitation in the forecast. Wet loose will not be an issue when the freezing levels drop on thursday.

Weather Forecast

Wednesday- Freezing level 1800m. 5-10mm of precipitation. Light West wind.

Thursday- Freezing level dropping to valley bottom. Moderate West wind  Mix of sun and cloud with a clearing trend in the afternoon. No precipitation.

Friday- Freezing level remaining at valley bottom. No precipitation.

Snowpack Summary

Wind has scoured SW aspects to ground the alpine. A melt freeze crust is expected to form on solar aspects as freezing level drops with incoming storm on wed. Northerly aspects above 2000m have a wind slab sitting over a old melt freeze crust. 80cm of snow at Cameron Lake @2000m. Less than 20cm in rest of park. Below threshold at lower elevations.

Avalanche Summary

No new avalanches observed.

Confidence

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