Bollettino valanghe

Jasper

Jan 9 – 10, 2013Parks Canada
Vedi sulla mappa
Archiviato · scaduto 14 years ago

Pericolo valanghe

Wed
Thu
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
2 · Moderato
Apri la mappa completa

In sintesi

A large storm with heavy snow is moving in from the Pacific.  Southern portions of the forecast area could receive a substantial snowfall.  Avalanche conditions will move to High if this occurs.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Very Likely
    Dimensione
    1–3
    New wind slabs will be forming on lee slopes with 30 cm of storm snow and strong SW alpine winds.  Open tree line features will also see slab development.  In many lee areas, these slabs will be sitting on top of the weak January 6th surface hoar.

  • Storm Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely - Very Likely
    Dimensione
    1–3
    Up to 30 cm of storm snow is possible in the next 24 hrs.  We will likely see an avalanche cycle involving the storm snow on steep slopes.

Weather Forecast

A fast moving low pressure system will bring up to 30 cm of snow Tuesday night through to Wednesday evening.  Over 60 cm of snow is possible in southern portions of the forecast area.  Strong SW alpine winds will accompany the onset of this storm that will ease to light northerlies by the end of the day. 

Snowpack Summary

Widespread surface hoar (2-7mm) has been buried by up to 10 cm of new snow.  The snowpack is faceted and is losing strength in shallow areas. The mid-pack is supportive where the snow depth is greater than a meter. Wind slabs are present in lee features at tree line and above.

Avalanche Summary

No new avalanches were seen in the Icefields area today.

Confidence

Forecast snowfall amounts are uncertain on Wednesday

Regioni coperte