Bollettino valanghe

East Slopes Central

Northwest Avalanche Center
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Pericolo valanghe

Fri
Alta quota
2 · Moderato
Limite del bosco
1 · Debole
Sotto il limite
Senza grado
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Non aggiornato — questo bollettino è scaduto 9 months ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

More rain will maintain wet avalanche concerns across the zone. Continue to avoid steep snow-covered slopes with wet, unsupportable surfaces, sagging cornices, or other steep features that could shed wet snow. Expect high creek crossings and rough, low-elevation travel. 

Problemi valanghivi

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–1.5

    Continued rainfall will maintain wet avalanche concerns above the snowline. Some cooling may help limit this problem at upper elevations, but with several inches of recent rain still percolating through the snowpack, continue to expect wet and saturated structure. Given the unusual amount of rainfall, consider any combination of wet loose, wet slab, cornice shed, and even small glide avalanches where smooth rock slabs exist beneath the lean, early-season snowpack. 

    If you decide to brave the wet weather and a rough approach, go into the day with a flexible, observant mindset. We’re really not sure how this amount of rain will play out across the range, especially given the lack of visibility and early-season observations. Continue to steer around steep slopes if you notice recent wet avalanches or if you’re sinking past your boot-top in sloppy, wet snow. Keep in mind that a small avalanche could have big consequences when the snowpack is so thin.

    Additional Discussion:

    With the cooling trend throughout the day, upper elevations and the northern parts of the zone could see some light snowfall. It won't be an easy day to get up high, but if you succeed and notice more than a few inches of dry snow,  start thinking about fresh slab development in wind-exposed, upper-elevation terrain.

    (3/27/2025)

    An example of a small wet avalanche that ran on smooth ground. These will be overhead hazards to avoid.

    Photo: Katie Warren

Avalanche Discussion

Back-to-back atmospheric rivers have delivered anywhere from 2-5 inches of precipitation (mostly rain) across the zone, with higher amounts closer to the Cascade Crest. Thursday looks like another wet day in the mountains, but precipitation should begin to taper towards the end of the day, bringing a welcome end to a very wet period. We'll have to see what the mountains look like after this. 

Because lower elevations still lack sufficient snow, we are not issuing a hazard rating. As you move higher, however, the snowpack approaches seasonal norms—so you should expect both avalanche size and likelihood to increase.

With a warm start to the 25-26 winter season, we have less snowpack data than usual to begin daily forecast operations. For zones and elevation bands with less snow than needed for avalanche hazard, we will issue a forecast with No Rating. Anticipated avalanche and weather conditions will still be updated daily. NWAC will issue an avalanche danger rating for a zone when enough snow to produce avalanches has accumulated at middle and upper elevations.

Regioni coperte