Bollettino valanghe

Provo

Pubblicato il Apr 9, 2022valido fino al Apr 10, 2022Utah Avalanche Center

Pericolo valanghe

Alta quota
Limite del bosco
Sotto il limite del bosco

Non aggiornato — questo bollettino è scaduto 4 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Today we have a MODERATE avalanche danger on slopes facing northwest, north, northeast, and east at the upper elevations for fresh drifts of wind-blown snow. There is also a MODERATE avalanche danger on steep slopes that face northwest, north, and northeast for the possibility of triggering a much larger and more dangerous avalanche that fails 1-2' deep on a buried persistent weak layer.

Remember - risk is inherent in mountain travel, and even a small avalanche can lead to a bad outcome in radical terrain.

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
1
Many surfaces won't have any snow to blow around and drift because they are frozen this morning, and there is no snow available for transport. However, dry, cold powder remains on northerly facing slopes above about 9,000' in elevation, and these would be the slopes I would suspect to find some wind drifted snow on.

Be on the lookout for snow that is actively being drifted by the wind and avoid areas that look pillowy and rounded. Wind drifted snow can also feel stiff/hard and hollow like a drum. Any wind drifted snow avalanche triggered could step down into deeper weaker layers, especially on upper elevation northerly facing steep terrain (persistent weak layer problem).
Persistent Slabs
N
NE
E
SE
S
SW
W
NW
Alta quota
Limite del bosco
Sotto il limite del bosco
Probabilità
Possible
Dimensione
2
On upper elevation northerly slopes, any avalanche may step down to a weak layer of facets (persistent weak layer) 1-2' deep, particularly in the southern part of the Provo mountains. These facets are remnant from the dry spell in Jan and February and are slowly stabilizing.

There is a great deal of uncertainty with this layering, but this structure has been active further south on the Manti-Skyline Plateau as recently as last Saturday. It is worth pulling your shovel out and looking at the snow structure yourself. Bo Torrey found unstable test results in Big Springs last weekend, while Drew's test results hinted at a more stabilizing snowpack from a field day on Wednesday. More info can be found HERE.

For now, I would approach upper elevation northerly facing terrain with caution.

Special Announcement

Snowbasin Ski Patrol is holding an avalanche dog fundraiser on Saturday, April 9th from 6-10pm at Mountain Luxury Real Estate, 3632 N Wolf Creek Drive in Eden, UT. The event costs $20 and includes dinner and a silent auction. Find more information HERE.

Recent Activity

No new avalanches were reported yesterday.

Snow and Weather

Last night around 10:00 pm, the winds picked up and are currently blowing from the west-southwest at speeds of 10-15 mph with gusts into the 20's & 30's across the upper elevations as a dry cold front crosses over northern Utah. Above 10,500', the winds are blowing from the west at 25-30 mph, gusting into the 50's. Mountain temperatures remain warm, with overnight lows in the upper 30's to low 40's °F across almost all elevations.

Today we will see mostly cloudy skies and mountain temperatures cooling throughout the day. The 700 millibar (10,000') temperature drops to -2°C (28°F) by noon. Winds will remain elevated throughout the day and will continue to blow from the westerly direction at speeds of 10-20 mph with gusts into the 20's & 30's.

This week winter will return to northern Utah as a robust storm system will impact us starting Monday. By Wednesday we could see 14-22 inches of new snow.

General Announcements

Who's up for some free avalanche training? Get a refresher, become better prepared for an upcoming avalanche class, or just boost your skills. Go to https://learn.kbyg.org/ and scroll down to Step 2 for a series of interactive online avalanche courses produced by the UAC.

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