Boletín de aludes

Ogden

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 8 years ago. Estás viendo condiciones pasadas, no el boletín vigente.

Lo esencial

A strong MODERATE DANGER exists on heavily wind loaded slopes at the mid and upper elevations. The danger is most pronounced on upper elevation northerly through easterly facing terrain. Cornices are an issue - Exercise great caution along and underneath the heavily corniced ridgelines.

Safe Travel Protocols are critical: one at a time, get out of the way at the bottom, have a plan.

Problemas de aludes

  • Wind Slabs

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

    Longtime observer Bill Hunt reported lots and lots of cracking even down to 7400'. These are signs of instability that drive us to low angle terrain. For today, new and old wind drifts exist on many aspects now at the mid and upper elevations. Some are stubborn and hard; others are shallow and soft. All are gaining strength and stability but steep wind drifted terrain should continue to be avoided for another day. The usual bag of tricks for soft wind slabs do not work effectively for hard wind slabs. In other words, cornice drops and ski cuts can be misleading at best and dangerous at worst. I imagine we'll have a couple more human triggered wind drifts to talk about tomorrow. The majority of these drifts are in upper elevation northerly through easterly aspects but others are scattered around the compass in the mid-elevations due to terrain channeling. (pc Hunt)

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    3

    CORNICES ARE ENORMOUS. Most of these are too large to intentionally drop onto a slope below. They will break back farther than you think, well back from the apex of the ridgeline. 5% of our avalanche fatalities in Utah have involved cornice fall. Exercise great caution along and underneath the heavily corniced ridgelines. See pic from yesterday below from the central Wasatch that shows in great detail what the consequences might be for going over with the box car. (pc: Murray)

Special Announcement

The accident reports for the four avalanche fatalities are all finalized with some first-hand accounts and worth reading. We all have something to learn so that we can get home safely to our loved ones.

Jan 18 Electric Lake Accident (Skyline area)

Jan 25 Laurel Peak Accident (Moab area)

Feb 7 Circleville Mtn Accident (Southwest area near Beaver, UT)

Feb 9 Chalk Creek Accident (Western Uintas)

The latest UAC Podcast was just released: The Message and the Messengers - A Conversation with Alex Hamlin. In this podcast, we sit down with Alex Hamlin. In our conversation, we talk about the psychology behind marketing (and influencing behavior change), with a particular eye toward marketing safety. We talk about what storytelling means as a way of establishing connections and meaning - as this was central to his philosophy in producing and directing the exceptional BDTV series from a few years ago.

Recent Activity

Ski areas triggered only shallow wind slabs with explosives and ski cuts yesterday and there were reports of widespread drifting along the Ogden skyline to the north.

Snow and Weather

Skies are partly cloudy with temperatures in the teens.

The winds defied expectations yesterday and some might even say overachieved. They blew 25-30mph from the west and northwest with gusts to 40 up high but have largely settled down and are now generally less than 10mph from the southwest.

Snow depths are 80-100" up high with excellent coverage in the low elevations (despite recent rain).

Wind, periods of sun, and localized riming had their way with the snow surfaces and you'll find both excellent and variable conditions in the mountains with the most consistent riding in the sheltered mid-elevations.

A large trof of low pressure cradles the entire western US. A couple weak systems rippling through will keep us with cold temps, light winds, and occasional light snowfall for the upcoming week. As always, you can find great into on Instagram at ogdenavalanche and #ogdenavalanche. Bill Brandt had excellent video of the ferocious winds yesterday.

General Announcements

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This information does not apply to developed ski areas or highways where avalanche control is normally done. This forecast is from the U.S.D.A. Forest Service, which is solely responsible for its content. This forecast describes general avalanche conditions and local variations always occur.

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