Bollettino valanghe

Salt Lake

Pubblicato il Mar 22, 2025valido fino al Mar 23, 2025Utah Avalanche Center

Pericolo valanghe

Alta quota
Limite del bosco
Sotto il limite del bosco

Non aggiornato — questo bollettino è scaduto last year. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

There is a MODERATE avalanche danger today, where it will be possible for humans to trigger new or wind-drifted snow avalanches failing in the most recent storm snow. This will be more likely during periods of increased snowfall. With any hint of March sun expect to see wet avalanches on solar aspects.

Problemi valanghivi

Storm Slabs
N
NE
E
SE
S
SW
W
NW
Alta quota
Limite del bosco
Sotto il limite del bosco
Probabilità
Possible
Dimensione
2
Yesterday, the due north aspects had a damp but soft snow surface and as soon as you got on any other aspect there was a melt-freeze crust that was either breakable or damp depending on the time of day. The snow that fell last night is slightly rimed and may not bond very well to the melt-freeze crust. Any avalanches may run fast and far on southerly aspects where the new snow fell on a slick surface. Expect to see snow pooling below cliff bands and in the bottom of gully features this morning. It will be possible for humans to trigger dry loose avalanches in steep terrain today. These will be 3"-8" deep and in areas where they have room to run could be powerful enough to push a human off their feet. Be aware of groups traveling below or above you if you start to see long running new snow avalanches.

Any sun on new snow, even for an instant, will increase the likelihood of seeing wet snow avalanches. This is more likely to occur on the southerly and westerly facing slopes this afternoon. Rain on snow below 8,000' could also create wet loose avalanches in steep terrain.
Wind Slabs
N
NE
E
SE
S
SW
W
NW
Alta quota
Limite del bosco
Sotto il limite del bosco
Probabilità
Possible
Dimensione
2
The one consistent with this weather forecast is that the wind will blow. Expect to see drifts of wind-blown snow on the downwind side of ridgelines and terrain features. The wind-drifted snow will create soft and sensitives cornices on the ridgelines and these cornices may break further back than you expect and trigger soft slab avalanches below them. Look for and avoid pillowy, wind loaded features and if you see cracking or collapsing than move to lower angle terrain.

Photo (Kelly) of an overhanging cornice on a south facing ridgeline at 11,000'

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Recent Activity

Yesterday, we had a report from Mill Creek of a glide avalanche that most likely occurred a few days ago. We also had reports of shallow roller balls when the sun broke out in the afternoon.

Photo (M. White) of a glide avalanche reported yesterday in Mill Creek. Check out all recent observations and avalanches HERE.

Snow and Weather

Currently, under overcast skies it is snowing lightly. We had 2"-4" of snow overnight with .15"-.45" of snow water equivalent (SWE). Temperatures are in the high 20's to low 30's °F. Winds are blowing from the west-southwest in the teen's gusting to the 20's MPH at the lower ridgelines and from the west-northwest in the 40's gusting to the 50's MPH at the highest ridgelines. Today, look for overcast skies with decreasing clouds this afternoon. 4"-8" of snow is forecasted with .4"-.8" of water. There could be more snow in select locations which could see snowfall rate of up to 1" an hour. The storm should exit the area later this afternoon. Temperatures will be in the high 30's °F and we may see rain on snow below 8,000' in elevation. Winds are forecast to blow from the southwest 15 gusting to 20 MPH at the 9,000' ridgelines and from the west-northwest 30 gusting to 40 MPH at the 11,000' ridgelines.

Additional Info

What happened to the persistent weak layer (PWL)? We encourage you to take the time to read this blog post discussing the PWL and how it may return. Check out the Salt Lake Region Week in Review HERE.

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

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