Boletín de aludes

Waterton Lakes

Dec 29, 2015 – Jan 1, 2016Parks Canada
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Archivado · caducó 11 years ago

Peligro de aludes

Tue
Wed
Alta montaña
2 · Moderado
Límite del bosque
2 · Moderado
Bajo el límite
1 · Débil
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Lo esencial

With the longterm forecast calling for a tenacious ridge of high pressure to keep things cool and dry into the new year, it would be wise to get out and take advantage of the great start we've been having to the season.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2
    Recently formed windslabs are now being buried by light snowfall

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely
    Tamaño
    1–3
    A large natural slab avalanche was observed last wednesday, this may have released at a buried crust from early December. For now, it is unclear if this will remain an isolated event, or if this layer is becoming more sensitive to loads.

  • Loose Dry

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1
    Small sluffs may trigger previous windslabs

Weather Forecast

Flurries will tapper off through Tuesday morning as a ridge of high pressure embeds itself over our area, total expected snow accumulations are 5-7cm.  This ridge is forecast to persist through Thursday, giving seasonably cool temperatures (day time highs of up to -5 and overnight lows as low as -19) with light to moderate winds from the SW.

Snowpack Summary

Light snow is currently burying windslabs formed by this weekend's Mod-Strong SW winds. Below, old layers of settling storm and wind slab are interspersed with two thin layers of facets and possibly surface hoar which continue to slowly stabilize. This overlies the Dec 9th crust (down 50-90cm), still a concern as a developing weak interface.

Avalanche Summary

Several natural size 1-2 slab avalanches were observed yesterday, likely triggered by loading and slab development from the weekends wind event.

Confidence

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