Bollettino valanghe

North Rockies

Apr 21 – 22, 2024Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 2 years ago

Pericolo valanghe

Tue
Wed
Alta quota
1 · Debole
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole
Apri la mappa completa

In sintesi

Evaluate your line for pockets of wind slab, especially around ridgecrest and in extreme terrain.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–1.5

    Thin pockets of wind slab are possible where wind has deposited sufficient snow into lee terrain features at upper elevations. Wind slabs may be especially reactive where they sit over a crust.

Confidence

Moderate

Avalanche Summary

No recent avalanche activity has been reported.

Snowpack Summary

A dusting of new snow sits over a widespread melt-freeze crust on all but high north-facing alpine terrain, where snow remains dry and wind affected.

Weather Summary

Sunday night

Cloudy with a trace of snow at upper elevations. 40 to 60 km/h west ridgetop wind. Treeline temperature -3 °C. Freezing level 1400 m.

Monday

Clouds clearing through the day. 20 to 40 km/h northwest ridgetop wind. Treeline temperature -1 °C. Freezing level rising to 1900m.

Tuesday

A mix of sun and cloud. 20 to 40 km/h southeast ridgetop wind. Treeline temperature 0 °C. Freezing level 2300m.

Wednesday

Flurries bringing up to 5 cm of snow at upper elevations. 40 to 60 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1900m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Small avalanches can have serious consequences in extreme terrain. Carefully evaluate your line for wind slab hazard before you commit to it.
  • When a thick, melt-freeze surface crust is present, avalanche activity is unlikely.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Regioni coperte