Bollettino valanghe

Waterton Lakes

Jan 11 – 14, 2013Parks Canada
Vedi sulla mappa
Archiviato · scaduto 14 years ago

Pericolo valanghe

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

In sintesi

The recent storm brought 40 to 50 cm of low density snow with very little wind. Forecasters are working to gather more information concerning the Jan 5 layer and until more is known conservative terrain choices are advised. Great skiing!

Problemi valanghivi

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–3
    Jan 5 Surface Hoar/ Suncrust layer is now buried 60 to 90 cm. Extra caution on sheltered North and East aspects. Dig down to identify this layer and avoid  steep or unsupported slopes where it is present. Triggering this layer would be serious.

  • Loose Dry

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1
    Surface sluffing on slopes over 35 degrees. Manage this carefully within the group by not skiing above other skiers and avoiding terrain traps and gullies or confined terrain. This should decrease with settling over the next few days.

Weather Forecast

A ridge of high pressure will dominate for the period with a generally cool, sunny, dry, North Westerly pattern with light winds. A few cm of new snow are expected Friday. Dry conditions Saturday and Sunday.

Snowpack Summary

50 cm low density storm snow above 1500m with little wind effect or slab formation. The Jan 5 interface is now down 70-90cm with a 30-40 cm soft slab immediately above it. This interface produced Moderate to Hard test results on Surface Hoar in sheltered N and E locations. Suncrust exists at this interface on steep S aspects. 290 cm at treeline

Avalanche Summary

Limited Visibility continues. Skiers will experience sluffing in steep terrain. Skier triggering is possible on the Jan 5 interface. Forecasters have been making conservative terrain choices while gathering more information about this layer.

Confidence

Due to the number of field observations

Regioni coperte