Bollettino valanghe

Waterton Lakes

Dec 31, 2015 – Jan 3, 2016Parks Canada
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Archiviato · scaduto 11 years ago

Pericolo valanghe

Thu
Fri
Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole

In sintesi

With warm and stable weather in the forecast the Alpine playground is likely to be pretty inviting over the next few days. Watch for increased avalanche activity/instability on solar aspects as the forecast strong temperature inversion kicks in.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1–2
    Previously formed windslabs are now difficult to detect as they were buried by the recent new snow.
  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely
    Dimensione
    1–3
  • Loose Dry

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1
    Small sluffs may trigger previous windslabs.

Weather Forecast

A strong upper ridge aloft is creating a pattern of stable weather which is forecast to persist in to next week at least.  A warm pacific airmass slowly nudging it's way North East will ride up over the present cold air, creating a strong temperature inversion with highs approaching 0 degrees in the Alpine by Thursday afternoon.

Snowpack Summary

5-10cm of light new snow has buried windslabs formed by the 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

A few naturally triggered loose snow avalanches up to size 1.0 have been observed in the past couple of days.

Confidence

Intensity of incoming weather systems is uncertain

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