Boletín de aludes

Jasper

Mar 19 – 20, 2013Parks Canada
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Archivado · caducó 14 years ago

Peligro de aludes

Thu
Fri
Alta montaña
3 · Notable
Límite del bosque
2 · Moderado
Bajo el límite
2 · Moderado
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Lo esencial

Winds continue to buffet the Icefields yet good skiing can be found in sheltered locations. Weather models are not agreeing with amounts or timing of  warm front. If more precipitation arrives plus warmer temperatures, expect the danger to increase. 

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–3
    100cm cm has fallen since March 13. Initially strong N winds reverse loaded many slopes but now has shifted to moderate Westerly. Soft slabs are developing below ridgelines yet remains spotty in many zones. Wind transport is occurring in alpine. 

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–3
    There remains allot of unconsolidated storm snow available. It is is susceptible to solar, wind and human triggering forming loose snow avalanches of significant mass. Enough to knock climbers or skiers off their line particularly when its moist..

Weather Forecast

Wednesday will bring a warm front, possibly 5-10cm of snow, rain lower elevations with freezing level 1700m, and strong SW alpine winds. The models are not agreeing with Wednesday's timing. Thursday will have cooling trend, diminished winds, flurries, and lower freezing level. Friday will be much like Thursday.

Snowpack Summary

Soft slabs continue to form at exposed treeline locations and above from today's moderate West winds. Previous North winds reverse loaded many slopes and gullies. 90cm of snow fell since March 13. Snow transport is occurring. At treeline, soft slabs rest on a suncrust 80 cm deep in south facing terrain. Below treeline is generally supportive.

Avalanche Summary

Tuesday's patrol had 100% visibility. Several recent large avalanches to size 3 noted on large high elevation features on various aspects from the past 24hrs. A number of loose moist avalanches up to size 2 were noted mainly from sun impacted slopes, gullies, and cliffs. All these observed recent avalanches were running relatively far. 

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Wednesday

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