Boletín de aludes

Moab

Utah Avalanche Center
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Peligro de aludes

  • Alta montaña
  • Límite del bosque
  • Bajo el límite del bosque
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Desactualizado: este boletín caducó 6 years ago. Estás viendo condiciones pasadas, no el boletín vigente.

Lo esencial

The avalanche danger remains CONSIDERABLE on steep, northerly facing slopes at mid and upper elevations. In these areas, slabs have formed on top of layers of weak, sugary, faceted snow. This persistent weak layer problem will be with us for the foreseeable future and though overall low coverage makes it difficult to access these areas, steep, northerly facing slopes should be avoided. There is a MODERATE avalanche danger on steep slopes at upper elevations that have recent deposits of wind drifted snow. Most other terrain has generally LOW danger.

Problemas de aludes

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    2

    A significant load has been added to our fragile snowpack. On mid and upper elevation northerly aspects, the snowpack has deteriorated into layers of weak, sugary, faceted snow on top of a slick, hard bed surface. This has created a persistent weak layer problem that will stick with us for some time. Although avalanche terrain remains difficult to access due to low coverage, human-triggered avalanches are likely in these areas and steep, northerly facing terrain will remain off-limits for the foreseeable future.

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    2

    Moderate WNW winds have blown and drifted snow at upper elevations. Look for unstable areas of wind drifted snow on the leeward sides of ridge crests and terrain features in exposed, upper elevation terrain. Wind drifts are recognizable by their smooth rounded appearance and cracking is a sign of instability. In most cases, a triggered wind drift will most likely step down into a persistent weak layer of sugary, faceted snow. Avoid steep slopes with areas of wind drifted snow.

Recent Activity

Several natural avalanches occurred in Gold Basin during last week's storm. This type of avalanche is still ripe for a human trigger.

Natural avalanche on the NE face of Mount Tukno. Dave Garcis photo.

Special Announcement

The Geyser Pass Road is plowed. The surface is snow packed on dirt.

The Lower Utah Nordic Alliance (LUNA) groomed all trails yesterday.

The Utah Avalanche Center podcast's second episode of season 4 is live - Managing Risk with Avalanches, Managing Risk with a Pandemic - A Conversation with state epidemiologist Dr. Angela Dunn.

Stream here or tune in wherever you get your favorite podcasts

There are several new blogs that have recently been published:

Read a few short anecdotes in a blog from UAC staff about how avalanches can surprise us.

UAC forecasters Paige Pagnucco and Greg Gagne discussing danger ratings and persistent weak layers.

Snow and Weather

24 Hour Snow 0" 72 Hour Snow 0" Base Depth in Gold Basin 27" Wind NW 15 G25 Temp 18F

Wind, temperature, humidity on Pre Laurel Peak (11,700')

Snotel site near Geyser Pass Trailhead (9600').

NWS weather forecast

Snowpack Discussion Last week's snow load has added significant stress to our fragile snowpack, and in our travels yesterday we continued to observe fairly widespread collapsing and whumphing, sure red flag signs of instability. On northerly aspects, layers of weak, sugary, faceted snow exist on top of a slick, hard melt-freeze layer forming a persistent weak layer that is bound to stick with us for some time. The snow quality below treeline is quite good, but overall coverage is still very thin so keep your enthusiasm in check and stick to low angle grassy slopes and meadows.

Additional Info

For an in-depth look at how the early season snow history has lead to these conditions, check out this blog post from Chris Benson.

General Announcements

This forecast is from the U.S. Forest Service, which is solely responsible for its content. This forecast describes general avalanche conditions and local variations always occur.

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