Bollettino valanghe

Jasper

Mar 3 – 4, 2024Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 3 years ago

Pericolo valanghe

Tue
Wed
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
3 · Marcato
Apri la mappa completa

In sintesi

While natural avalanche activity may be tapering off, dangerous avalanche conditions still exist and HUMAN TRIGGERED avalanches are LIKELY.

Conservative decision-making remains extremely critical.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–2.5

    Strong winds that accompanied the +50cm storm have produced windslabs in the alpine and treeline.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1.5–3

    This problem layer is the crust and facets created by early February's warm spell. It is down 30-70 cm in the snowpack and is a 1-10 cm thick crust.

  • Deep Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    2–4

    The base of the snowpack is inherently weak and untrustworthy. Tickling this deep layer would result in a high consequence avalanche. Any avalanche in the upper snowpack has the potential to step down to the base of the snowpack.

Confidence

Moderate

Avalanche Summary

A widespread avalanche cycle has occurred as a result of the Feb 29th storm. Natural avalanches up to size 3.5 have been observed in the Icefields/Parker Zone on all aspects in the alpine and the tree line running to the end of avalanche paths. Likewise avalanche control along the Icefields Parkway on Friday had several sympathetic avalanche releases from a single explosion.

Snowpack Summary

Up to 50 cm of new snow fell in this storm with strong winds, creating windslabs. This storms snow is now sitting on faceted snow above a 1-3cm thick crust that is down 35-60 cm. The mid-pack is faceted with basal depth hoar and well developed facets near ground. HS ranges from 80 to 130cm.

Weather Summary

The Mountain Weather Forecast is available at Avalanche Canada https://avalanche.ca/weather/forecast

Sunday

Cloudy with sunny periods.

Precipitation: Nil.

Alpine temperature: High -12 °C.

Ridge wind light to 15 km/h.

Monday

Cloudy with sunny periods.

Precipitation: Nil.

Alpine temperature: Low -18 °C, High -12 °C.

Ridge wind west: 10 km/h.

Terrain and Travel Advice

  • Avoid exposure to overhead avalanche terrain, large avalanches may reach the end of run out zones.
  • If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.

Regioni coperte