Bollettino valanghe

Jasper

Mar 12 – 13, 2024Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 3 years ago

Pericolo valanghe

Thu
Fri
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
2 · Moderato

In sintesi

Good riding in sheltered areas. Start your day early and keep your objectives flexible.

Your forecasters have no confidence in the strength of the snowpack, and neither should you!

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–2

    Recently formed wind slabs continue to build with moderate winds, if triggered this will likely initiate deeper instabilities leading to larger-than-expected results.

  • Persistent Slabs

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

    This problem layer is the crust and facets created by early February's warm spell. It is down 30-80 cm in the snowpack and is a 1-10 cm thick crust or multiple crusts with a layer of weak facets above.

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–2

    Strong and extended solar effect is expected on all sunny aspects. Open and exposed terra will accelerate this process and may initiate deeper instabilities.

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.

Confidence

High

Avalanche Summary

No new avalanches have been observed or reported.

Snowpack Summary

Deep storm snow, building wind slabs, and a forecasted warmup will stiffen the upper snowpack into a more cohesive, likely extremely reactive slab over a crust, down 35-60cm. This persistent weak layer is consistently reactive in snowpit tests. The equally worrisome basal depth hoar makes up the bottom third of the snowpack. HS ranges from 80 to 130cm.

Weather Summary

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

Parker Ridge - Wednesday

A mix of sun and clouds. No new precip.

Alpine temperature: High -5 °C.

SW Ridge winds: 15-30 km/h.

Freezing level: 1700-1900m.

Regioni coperte