Bollettino valanghe

Jasper

May 5 – 6, 2013Parks Canada
Vedi sulla mappa
Archiviato · scaduto 13 years ago

Pericolo valanghe

Tue
Wed
Alta quota
Senza grado
Limite del bosco
Senza grado
Sotto il limite
Senza grado
Apri la mappa completa

In sintesi

Spring conditions exist. Warm temperatures, poor overnight freezing and intense solar radiation will combine to produce avalanche activity on hot afternoons. Avoid overhead cornice hazards and finish your trip early in the day.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–3
    A significant amount of snow fell in the area during the last week of April and was distributed by winds onto lees aspects.  Expect to see slab avalanches from windloaded terrain on hot afternoons.

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    2–3
    Large cornices are looming. On failure, deep releases may run far into the valley bottom.

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–3
    Warm temperatures and strong solar effect are creating loose wet avalanches that may go full depth and travel a long distance. Avoid large open slopes on hot afternoons.

Weather Forecast

Spring conditions exist with a weak frozen crust in the morning that will break down sometime in the day as the temperatures rise and solar radiation increases.  Warm  temperatures will cause poor overnight recovery with only a light freeze. This will progress as the days get longer and the nights get warmer.

Snowpack Summary

The 40cm of snow that fell last week in the Icefields area has been blown into windslabs below easterly alpine ridgelines. On Southerly aspects, this new snow is becoming wet and is sliding on a buried suncrust. Relatively warm overnight temperatures are limiting the development of a supportive crust.

Avalanche Summary

No recent avalanche patrol has taken place.  With warmer temperatures and poor overnight recovery,  afternoon avalanche activity is expected on solar aspects and the occasional slab release from isolated windloaded terrain.

Confidence

Timing or intensity of solar radiation is uncertain

Regioni coperte