Bollettino valanghe

Salt River and Wyoming Ranges

Bridger-Teton Avalanche Center
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Pericolo valanghe

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

In sintesi

The likelihood of human-triggered and natural wet snow avalanches will increase as the day warms and the sun melts the snow surface. Start early and move to gentler terrain or colder slopes as refrozen snow at the surface breaks down. Windier slopes may harbor cooler snow that will hold stability longer as the day warms.

Problemi valanghivi

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2

    Below-freezing temperatures and partly cloudy skies helped the snow surface to refreeze more solidly last night. The likelihood of encountering wet snow problems will increase through the day as temperatures warm and the intense spring sunshine melts the crust on the snowpack's surface. You can significantly reduce your risk of encountering a wet snow problem by monitoring the crust (or lack of crust if you venture out this morning and just encounter mush). If you're beginning to break through the surface crust or sinking into wet mush, it's time to head for colder slopes or lower-angled terrain.  We're expecting a bump in avalanche danger tomorrow with the arrival of a spring storm and snowfall isolated to upper-elevation terrain. 

     

    (4/13/2024)

    Wet loose activity in a neighboring zone highlights what this problem can look like if triggered today. 

Avalanche Discussion

It's been a pleasure writing to you all. Thanks to all the professionals and the public who submitted observations this season. We value that you take the time to do this, as does the community. Having the best idea of what's happening in the mountains, both for the forecast and at an individual level, always benefits from more information. We strive to improve the forecast product and tools available to you each season. Play it safe this spring, have fun, and see you again when the snow flies. 

As we know, the Greys Zone is vast. Today, you may encounter a variety of conditions, and it is prudent to continue to have wet snow problems on your radar:

WET LOOSE AVALANCHES: These slides start at a point, typically around near rocks or trees, and fan out as they travel downhill. If you are seeking out corn in very steep terrain before any surface crust breaks down, you may be able to trigger wet, loose slides that involve just the upper inch or two of soft, wet snow. These slides can certainly knock you into unwanted terrain and, though viewed as "manageable," can rapidly pick up steam once they start moving.

WET SLAB AVALANCHES: Oh, wet slabs. I've seen a rogue wet slab avalanche happen once after weeks of a melt-freeze cycle in a snowpack almost thoroughly consolidated to cement, so always keep these in the back of your mind when choosing spring terrain. These avalanches occur when water percolates through the snowpack and weakens the bonds at weak layers in the snowpack. They typically behave in a patterned way, with heightened activity with direct solar input and multiple days of not freezing. We haven't seen much wet slab activity during this warm-up, but our observations have been limited. 

CORNICES: Warm temperatures mean that these chunks of snow are continuing to experience melt from their lofty perches. If they break, expect them to entrain a significant amount of surface wet snow. As with wet slabs, the timing of cornice failures is unpredictable, but they will most likely occur during the heat of the day.

 

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