Bollettino valanghe

Banff Yoho Kootenay

Mar 11 – 12, 2018Parks Canada
Vedi sulla mappa
Archiviato · scaduto 9 years ago

Pericolo valanghe

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

In sintesi

During the heat of the day, loose wet avalanches are almost certain in steep and confined terrain on solar aspects. Ice climbers should avoid avalanche terrain until things cool down.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–1.5
    Alpine West winds have formed wind slabs in lee areas near ridge crests over the past week. In steep unsupported terrain skier triggering is possible.

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Very Likely
    Dimensione
    1–2
    Expect loose wet avalanches to initiate from steep rocky terrain. Watch for increasing hazard associated with prolonged sun affect. Finish very early, or better yet, avoid steep confined features all together.

Weather Forecast

Expect the daily diurnal temperature variation to continue, each day a little bit warmer than the last. Sunday temps could climb to 4 degrees. Clear skies will also provide a condition for intense solar radiation. Wind will remain light from the SW.

Snowpack Summary

Last weeks storm of 10-25 cm sits on a supportive midpack. The surface snow has had some wind transport in the alpine forming thin wind slabs .A sun crust has formed on solar aspects at treeline and below. The deeper facet layers down 80-150 cm remain weak and are currently dormant, but could become active with the warm days ahead.

Avalanche Summary

Although outside the forecast region, a group of ice climbers were hit by a loose wet avalanche that caused moderate injuries on the ice climb 'Kitty Hawk'. Evidence of a loose wet avalanche cycle was isolated to steep solar gullies. Also observed were a few size 2 slabs on steep solar convex rolls.

Confidence

Regioni coperte