Bollettino valanghe

Logan

Utah Avalanche Center
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Pericolo valanghe

  • Alta quota
  • Limite del bosco
  • Sotto il limite del bosco
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Non aggiornato — questo bollettino è scaduto 6 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Generally safe avalanche conditions exist, but watch for unstable snow on steep drifted upper elevation slopes. Beware of very shallow, loose, sugary, and rocky early season snow conditions.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely
    Dimensione
    2

    Potential for triggering stiff slabs of drifted snow may exist on some steep upper elevation slopes where drifts have built up on loose sugary or faceted snow, and people could trigger avalanches.

    • Even a small avalanche could be very dangerous due to shallow early season snow conditions. You do not want to get caught and carried over rocks or strained through bushes and stumps, so it's best to avoid travel on all steep drifted slopes.

  • Persistent Slabs

    • Tutte le quote
    Probabilità
    Possible
    Dimensione
    0

    Dry and cold weather in the past couple weeks has created very weak snow on the shallow snow surface and within the snowpack. These are likely to become problematic persistent weak layers as snow stacks up later this winter.

    Surface hoar feathers are widespread on the snow surface in sheltered meadows and canyon bottoms.

Special Announcement

The holiday season is right around the corner!! Looking for that special something for your partner? Well, we've got an easy shopping solution for you ...Buy your gifts at our Pray for Snow online auction and support the UAC in Logan. HERE

Recent Activity

Saturday, a skier skinning up "Goal Post" avalanche path in Logan Dry Canyon triggered extensive and deep shooting cracks in the starting zone. "cracks to the ground shooting hundreds of feet in multiple directions" A stiff drift formed on well developed facets in this classic north facing deposition area, downwind from a large open lower angled fetch. Where it cracked, the slope was not very steep and the slab did not extend very far down into the avalanche path.

Shooting cracks like these are a red flag indicating unstable snow.

Snow and Weather

Finally, I can report a change in the weather. No huge storm, but a dry cold front will pass over the zone this evening and tonight, and it should be enough to mix out the stagnant air in Cache and Bear Lake valleys. Another, slightly moister front will bring up to about 1 inch of snow to the mountains tomorrow. A more active weather pattern is expected to continue next week.

Currently, hitting rocks or other shallowly buried obstacles presents a significant hazard in the backcountry. Most slopes have less than about 2' of total snow, and a steep temperature gradient is turning the shallow snow into loose sugary or faceted grains. In many places, the weak snow is easy to punch through to the rocks below.

Beware of very shallow early season snow conditions in the backcountry.

The shallow snow is becoming weak and sugary or faceted, especially in the top 20 cms of the snowpack.

Additional Info

Everybody should make time to examine and practice with your avalanche rescue equipment, and convince your backcountry partners to practice with you. Watch our companion rescue video HERE

General Announcements

Visit this website with information about Responsible Winter Recreation by the Utah Office of Outdoor Recreation.

If you missed the 13th Annual Utah Snow and Avalanche Workshop, the recordings are available for purchase from the UAC Store. HERE

The Tony Grove Road is not maintained for wheeled vehicles in the winter.

EMAIL ADVISORY. If you would like to get the daily advisory by email you subscribe HERE.

Remember your information can save lives. If you see anything we should know about, please help us out by submitting snow and avalanche observations....HERE. You can also call us at 801-524-5304, email by clickingHERE, or include #utavy in your tweet or Instagram.

We will update this advisory by around 7:30 Friday morning.

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

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