Bollettino valanghe

Salt Lake

Pubblicato il Jan 21, 2025valido fino al Jan 22, 2025Utah Avalanche Center

Pericolo valanghe

Alta quota
Limite del bosco
Sotto il limite del bosco

Non aggiornato — questo bollettino è scaduto 2 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

With increased wind speeds and snow available for transport, there is a MODERATE avalanche danger for triggering a wind drifted snow avalanche in mid and upper elevation terrain. There is a possibility of triggering an avalanche failing into the buried facets on mid and upper elevation northwest-north-east facing aspects, particularly on slopes with a thinner snowpack. There is a LOW avalanche danger in low elevation terrain. Strong winds can often load slopes on all aspects at mid and upper elevations, keep an eye out for pillowy, rounded areas of wind-drifted snow and avoid those slopes.

Problemi valanghivi

Wind Slabs
N
NE
E
SE
S
SW
W
NW
Alta quota
Limite del bosco
Sotto il limite del bosco
Probabilità
Possible
Dimensione
2
Wind drifts will be easy to spot as they will be pillowy, rounded, and located on the down-wind side of ridgelines, gullies, and terrain features

Cornices on ridgelines are a sign that the slope below has been wind-loaded, and these cornices will be sensitive today

Cracking and collapsing in the snow are warning signs that the wind drifted snow is sensitive and would make an avalanche on slopes steeper than 30 °

Photo (B. Honey) of a cornice fall on the east face of Reynolds
Persistent Slabs
N
NE
E
SE
S
SW
W
NW
Alta quota
Limite del bosco
Sotto il limite del bosco
Probabilità
Possible
Dimensione
3
The buried facets that are near the ground have been with us since early December with most avalanche activity on this layer starting around Christmas. The last avalanche that failed on these facets was a skier triggered avalanche in Upper Big Cottonwood on Thursday January 16th. This layer of weak facets is no longer giving us obvious signs that it is going to avalanche. The cracking, collapsing, and whumpfing has subsided and the lack of in-your-face weakness makes for a tricky problem. Most likely areas to trigger an avalanche 2'-4' deep and up to 100' wide are thin rocky areas, gully features, and locations that have avalanched earlier this season and have reloaded with new storm and wind-drifted snow. Any slope that matches these characteristics and receives additional wind loading today will be suspect.

Special Announcement

Join the UAC at Deer Valley on January 30th for the 2nd Annual Blizzard Ball Gala. Former Director of the Utah Avalanche Center, Bruce Tremper will deliver the keynote address. UAC forecaster Craig Gordon presents a FREE State of the Snowpack Presentation on Tuesday, January 21st from 6:00-7:30 PM at Alpha Coffee in Cottonwood Heights, get more information and reserve your spot HERE.

Recent Activity

Yesterday, we had no reports of avalanches to the UAC from the Salt Lake Region. We had a number of great observations from the backcountry and you can read all observations HERE.

Snow and Weather

Under clear skies trailhead temperatures are still below 0 °F in many locations. Upper elevation weather stations are in the single digits °F. Winds are blowing from a westerly direction in the teens gusting to the 20's at the 9,000' ridgelines and from the northwest in the 30's gusting to the 40's at the 11,000' ridgelines with gusts to the 60's. There was no new snow overnight Today, look for mostly clear skies with temperatures rising to 22-28 °F. Winds will blow from the west-northwest at the 9,000' ridgelines in the 20's gusting to the 30's and from the northwest at the 11,000' ridgelines in the 40's gusting to the 50's and ramping up to the 80's MPH by later this afternoon. There is no new snow expected today.

Even with extremely cold air temperatures some south and west facing aspects will have a slight melt freeze crust just below the surface that in most locations won't affect the sliding conditions, but is a unique occurrence, and worth noting if it still exists before our next storm.

General Announcements

CLICK HERE FOR MORE GENERAL INFO AND FAQ

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