Bollettino valanghe

Moab

Utah Avalanche Center
Vedi sulla mappa

Pericolo valanghe

  • Alta quota
  • Limite del bosco
  • Sotto il limite del bosco
Open full map
Non aggiornato — questo bollettino è scaduto 8 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

The avalanche danger remains CONSIDERABLE on steep, upper elevation, wind drifted slopes that face W-N-E. Human triggered avalanches involving wind drifted snow, and buried, persistent weak layers, are likely in these areas and natural avalanches are possible. Onmid and lower elevation, northerly facing terrain, the avalanche danger is MODERATE, and humantriggered avalanches involving wind drifted snow, and buried, persistent weak layers are possible. On slopes facing SW-S-SE the avalanche danger is MODERATE to LOW.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    3

    Strong southerly winds continue to blow and drift snow on to upper elevation, northerly aspects, and human triggered avalanches are likely on steep, wind drifted slopes in these areas. Natural avalanches are also possible. Be alert to recent deposits of wind drifted snow on the lee sides of upper elevation ridge crests and terrain features. They are often recognizable by their smooth, rounded appearance, and they may sound, and feel hollow underneath. Cracking in the snow surface is a sign of instability.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    4

    Snow stability test are starting to show varying degrees of reactivity with regard to buried, persistent weak layers. Where the snowpack is deepest, these layers are showing signs of healing, and Travis Naumnan was unable to produce any results yesterday, even with what he described as a "gorilla slap" to the column. On the other hand, I found the snow to be very reactive earlier in the week. Our primary layer of concern is the early December snow that has turned into weak, sugary facets on top of the October crust. With 21" of new snow, and almost 2" of water weight since then, I'm going to assume this layer is guilty until proven innocent. This means assuming that deep and dangerous, human triggered avalanches are possible, primarily on steep slopes at mid and upper elevations that face NW-N-E. The only way to know for sure will be to perform your own stability test on a slope by slope basis.

Special Announcement

The body of a snowmobiler buried by an avalanche east of Beaver, Utah near Circleville Mountain was recovered yesterday. Our deepest sympathies go out to the family and friends of the victim. Here is the preliminary report.

Recent Activity

A significant natural wind slab avalanche more than 100' wide was reported in Talking Mountain Cirque yesterday.

Snow and Weather

High clouds are spreading over the region ahead of a weak system that will affect areas to the north. Southerly winds for the past 24 hours have blown in the 35 mph range along ridge tops and they will continue to do so throughout the day. 10,000' temps are in the low teens with Gold Basin reporting 10 degrees, while Geyser Pass Trailhead (9600'), oddly enough, is coming in fairly warm at 23 degrees. We'll see partly cloudy skies today with continued strong southerly winds and blowing snow at the upper elevations. High temps will be in the low 20's.

Folks out and about yesterday continue to report excellent powder conditions, even on southerly aspects, in sheltered locations at low and mid elevations. Upper elevation, wind exposed terrain is either scoured or wind damaged, or dangerously drifted. Check out these observations from Reed Kennard, and Travis Nauman.

Base depth in Gold Basin: 62"

New snow totals in Gold Basin (10,000')

Snow totals at the Geyser Pass Trailhead (9600')

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

National Weather Service point forecast.

Lots of blowing and drifting snow up there! Reed Kennard photo.

General Announcements

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 me at 801-647-8896, or send me an email: [email protected].

Support the UAC through your daily shopping. When you shop at Smith's, or online at REI, Backcountry.com, Patagonia, NRS, Amazon, eBay by clicking on these links, they donate a portion of your purchase to the UAC. If you sell on eBay, you can have your See our Affiliate Page for more details on how you can support the UAC when you shop

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

Regioni coperte