Bollettino valanghe

Jasper

Jan 11 – 12, 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

Highway 93 will be closed from Parkers ridge to Saskatchewan crossing from 11am to 4pm for explosive control work. Moderate confidence of opening as depends on results. Polar Circus and Weeping Wall closed to climbers Friday.

Problemi valanghivi

  • Loose Dry

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–2
    30 cm of storm low density snow sits over unconsolidated facets mainly at lower elevations. Avalanches of this nature pick up enough mass to be a concern. 

  • Storm Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–3
    30-50 cm thick soft wind slabs have formed on lee slopes with 30 cm of storm snow and moderate gusty variable alpine winds.

Weather Forecast

Friday: Sun and cold, no new snow. Saturday: Sun and cold, no new snow.Sunday: mixed clouds, no new snow.

Snowpack Summary

Up to 30 cm of low density storm snow fell on Wednesday.  Below tree line, it sits on a thin facetted snowpack. In sheltered tree line areas this new snow is sitting on a supportive mid-pack.  In wind exposed tree line and alpine areas, a 30-50 cm deep soft wind slab has formed on a variety of aspects and buried a surface hoar layer from Jan 6.  

Avalanche Summary

Thursday's explosive control on low elevation targets released several size 2 slabs and loose snow avalanches. Natural activity was limited. It appears wind still needs to firm up the snow into a slab. A few size 2 naturals were noted releasing out of steep rocky terrain. Some running a fair distance. They started in the storm snow.

Confidence

The weather pattern is stable

Regioni coperte