Bulletin d’avalanche

Stevens Pass

Jan 6 – 7, 2015Northwest Avalanche Center
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Archivé · expiré 12 years ago

Danger d’avalanche

Wed
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
2 · Modéré

Points saillants

Areas of wet snow are expected, especially on steeper southerly facing slopes exposed to direct sunshine.

Problèmes avalancheux

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1

Detailed Forecast

Drying, clearing and very warm temperatures with freezing levels above 10,000 feet are expected Tuesday. This should allow for the recent rain soaked upper snow layers to drain free water and begin to consolidate.  

 

Snowpack Discussion

From 3 to over 7 inches of rain have fallen over the Cascade west slopes from Sunday night to Monday evening, following about 5-15 inches of snowfall prior to the change to rain. The heavy snowfall at Mt Baker, where temperatures remained cooler Sunday night and where significant new snow was received, produced widespread natural avalanches along Shuksan Arm as seen and reported by ski area patrol Monday, with consistent crown depths of about 2 feet. NWAC observer, Jeff Hambleton, scouting the event on Tuesday, found evidence of widespread wet snow avalanches, both loose and slab in the Baker area. 

Few other observations have been received since the major warming and rain event.

The rain and warming should have released any recent snow received prior to the substantial warming arrived Sunday night. The rain has reached the elevations of the Cascade crest and this essentially resets the snowpack, leaving behind wet or saturated upper snow layers. 

Régions couvertes