Bollettino valanghe

Sea To Sky

Mar 16 – 17, 2016Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 11 years ago

Pericolo valanghe

Fri
Sat
Alta quota
3 · Marcato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole
Apri la mappa completa

In sintesi

Strong sunshine will increase avalanche danger during the day. Plan your route to minimize exposure to big sun-drenched slopes in the afternoon.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–4
    We could see some fresh wind loading in immediate lee terrain from northeasterly winds on Thursday. Sun and afternoon warming may increase the sensitivity of triggering a slab.

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    2–5
    Cornices are reported to be large and weak. Natural cornice releases are possible with sun exposure and warming.

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–3
    Loose wet sluffing is likely in steep sun-exposed terrain during the day. 

Confidence

High

Weather Forecast

THURSDAY: Mainly sunny. The freezing level is around 1400-1600 m. Ridge winds are moderate from the northeast. FRIDAY: Mainly sunny. The freezing level should jump to around 2000 m and ridge winds are generally light. SATURDAY: Increasing cloud. The freezing level is around 1800 m and winds remain light.

Avalanche Summary

Recent avalanche activity is primarily limited to natural and explosive-triggered cornice falls. Some of these have been large (size 3) with only a few triggering slabs on the slope below. On Tuesday, one explosive triggered cornice triggered a 1-2 m deep slab on the slope below that released on an old weakness. Forecast sunshine and warming will likely increase cornice activity and result in loose sluffing from steep sun exposed slopes.

Snowpack Summary

Up to 120cm of snow fell over the last week or so. This snow is reported to be settling and gaining strength, but lingering storm instabilities may still exist, especially in recently wind loaded terrain features. Cornices are reported to be large and fragile. Expect to encounter a sun crust or moist snow on sun-exposed slopes depending on the time of day. The mid and lower snowpack are generally strong and well-settled.

Regioni coperte