Bollettino valanghe

South Rockies

Mar 29 – 30, 2017Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 10 years ago

Pericolo valanghe

Fri
Sat
Alta quota
3 · Marcato
Limite del bosco
2 · Moderato
Sotto il limite
2 · Moderato
Apri la mappa completa

In sintesi

Avalanche danger will increase if the the sun comes out and we get strong solar radiation combined with high freezing levels.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2
    New wind slabs have developed in the alpine and at treeline. Wind slabs may not be well bonded to old surface crusts.

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–2
    Watch out for wet snow at lower elevations or on sunny slopes if the sun comes out during the day.

  • Deep Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely
    Dimensione
    2–4
    Heavy triggers such as a cornice fall or wind loading are potential triggers for large avalanches on deep weak layers. Be aware of overhead hazard, and do not linger in avalanche paths at lower elevations.

Confidence

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

Weather Forecast

Overnight: Flurries or light snow with strong westerly winds and freezing at 1300 metres by morning. Thursday: Mix of sun and cloud with periods of strong solar radiation. Light winds with daytime freezing up to 1800 metres. Friday: Mostly sunny with light winds and daytime freezing up to at least 2300 metres. Saturday: Unsettled with flurries or light snow, not much of a re-freeze below 2000 metres. Westerly winds developing during the day.

Avalanche Summary

No new avalanches reported.

Snowpack Summary

A few more cm of new snow overnight, combined with gusty southwest winds has developed new wind slabs in the alpine and at treeline. Over the past several days we've had 10-30 cm of heavy snow at higher elevations, which sits on a thick hard crust that is quite solid above 1700m. Below the new snow and crusts, roughly 50-90 cm of snow sits above the February crust and facet interfaces. In some areas there may still be a poor bond to these interfaces. The bottom third of the snowpack is composed of weak facets and full-depth avalanches over this basal weakness remain a concern, and may be triggered by large loads (eg: cornice fall) or warm temperatures (eg: full exposure to the sun).

Regioni coperte