Bollettino valanghe

Lizard-Flathead

Apr 2 – 3, 2017Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 9 years ago

Pericolo valanghe

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

In sintesi

Snowfall amounts are variable and uncertain for Sunday night. Watch for storm slabs at higher elevations.

Problemi valanghivi

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    2
    Cornices are large and may fall off naturally during periods of sun or from daytime warming.

  • Storm Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2
    New snow and wind are forming storm slabs at higher elevations where the snow is still dry.

Confidence

Moderate - Forecast snowfall amounts are uncertain on Monday

Weather Forecast

SUNDAY NIGHT: Unstable weather will bring spotty precipitation with 5-15 cm of snow possible, gusty winds, and freezing level dropping to the valley. MONDAY: Cloudy with some lingering flurries in the morning then clearing in the afternoon, light north winds, freezing level climbing to 1600 m.TUESDAY: Sunny, moderate southwest wind, freezing level up to 1800 m after an overnight freeze.WEDNESDAY: Sunny with patchy clouds, moderate west winds, freezing level climbing to 2500 m with little overnight freeze.

Avalanche Summary

No new avalanches have been reported since Friday. On Friday, numerous storm slab avalanches up to size 2.5 were reported from explosive control, as well as loose wet avalanches released by ski cuts up to size 1.5. One natural cornice fall on Thursday was size 3, and pulled a storm slab from the slope below. On Monday, fresh storm slabs at higher elevations are the primary concern. Cornices will become a bigger concern throughout the week as temperatures warm up.

Snowpack Summary

Expect a wide range of new snow amounts on Monday morning. A total of 5-25 cm of snow could sit above a mixture of crusts and moist snow surfaces that formed during the recent warm and sunny weather. The thick supportive crust was reported to break down below 1600 m with daytime warming on Sunday. The earlier March crust is now down 40-100 cm. The December facets and November rain crust are buried deep, but they did not become reactive during the latest period of warm weather, rain, and strong solar radiation.

Regioni coperte