Boletín de aludes

Provo

Publicado el Feb 28, 2022válido hasta el Mar 1, 2022Utah Avalanche Center

Peligro de aludes

Alta montaña
Límite del bosque
Bajo el límite del bosque

Desactualizado: este boletín caducó 4 years ago. Estás viendo condiciones pasadas, no el boletín vigente.

Lo esencial

The avalanche danger will rise to MODERATE on mid and upper elevation slopes facing east through south and west with natural and human-triggered loose, wet avalanches possible.

On isolated mid and upper elevation slopes facing west through north and east there is a MODERATE danger for triggering soft slabs 1' to 2' deep failing on a buried persistent weak layer.

Problemas de aludes

Loose Wet
N
NE
E
SE
S
SW
W
NW
Alta montaña
Límite del bosque
Bajo el límite del bosque
Probabilidad
Likely
Tamaño
2
The cold, dry snow from last week was slowly introduced to warming over the weekend: it was first touched by sunshine on Saturday and slightly warmer temperatures and cloudy skies on Sunday. Therefore, today's strong sunshine and temperatures rising above freezing won't shock the snow surface, but there will be some avalanches involving wet, loose snow on aspects facing east through south and west. Wet rollerballs and loose sluffs are indications the snow surface is warming and that it's time to move to more northerly aspects.

Although wet avalanche activity is likely to be small, it could be consequential in confined terrain such as the accident in Tanners Gulch on Saturday in the Salt Lake mountains. Although this avalanche likely involved dry, loose snow, it does highlight this type of consequential terrain.
Persistent Slabs
N
NE
E
SE
S
SW
W
NW
Alta montaña
Límite del bosque
Bajo el límite del bosque
Probabilidad
Possible
Tamaño
2
The January/February drought resulted in weak, faceted snow along many snow surfaces and it was covered by the 10-16" of snow and wind-drifting from last week. Avalanches failing on this persistent weak layer are still possible on slopes facing west/north/east, but require need a denser, more-cohesive slab (i.e. wind-drifted) to avalanche. Cracking and collapsing are signs this structure exists, such as this party experienced on Sunday near Lake Blanche in Mill B South in the Salt Lake mountains. Avalanches failing on this PWL (persistent weak layer) can be triggered remotely (from a distance).

Before committing to a steeper slope on these W/N/E aspects, evaluate the snowpack and avoid slopes that have the structure of a stronger, denser slab on top of the buried PWL as shown in this photo.

Recent Activity

Other than minor wet-loose sluffing, no backcountry avalanches were reported from Sunday.

Snow and Weather

Currently: Skies are clear with temperatures ranging through the 20's F. Some low-elevation trailheads where colder air sinks are in the low teens. Winds are from the northwest and less than 10 mph at the mid elevations. Along the highest ridgelines, winds are averaging in the teens with gusts in the 20's mph.

For today, temperatures into the mid and upper 30's F at low and mid-elevations and right around freezing at the upper elevations, although today's clear skies and strong sunshine will likely make it feel much warmer. Winds will remain light at low and mid elevations and average in the teens with gusts in the 20's mph along the highest exposed ridges and summits.

Temperatures will warm through midweek with a trough possible by the end of the week.

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.

Observations and Avalanches

Backcountry Emergency Procedures