Avalanche forecast

Provo

Issued Apr 12, 2024valid to Apr 13, 2024Utah Avalanche Center

Avalanche danger

Alpine
Treeline
Below treeline

Out of date — this forecast expired 2 years ago. You’re viewing past conditions, not the current bulletin.

Highlights

The overall avalanche danger is LOW this morning, rising to MODERATE on steep aspects facing west, south, and east at the low and mid elevations as the snow warms. Avalanche activity may involve smaller loose-wet snow avalanches and larger wet slabs. Both natural and human-triggered cornice falls are possible.

Timing is everything - move off of steep slopes once the snow becomes wet and unsupportable.

Avalanche problems

Loose Wet
N
NE
E
SE
S
SW
W
NW
Alpine
Treeline
Below treeline
Likelihood
Possible
Size
2
Strong sunshine and the warmest temperatures of the season mean another day of wet avalanche activity with the potential for natural and human-triggered loose-wet avalanches and wet slab avalanches on steep, sunny slopes and low-elevation northerly slopes. Winds may limit the softening of the snow surface at the upper elevations.

The wet slab avalanches are the most concern. In Drew's field work on Thursday, he highlighted that some terrain in the Provo mountains - particularly along the Cascade ridgeline - have significantly shallower and weaker snow in areas due to repeater avalanches: these will be suspect during the heat wave for wet slab activity

Wet snow is the easiest avalanche problem to avoid: timing is everything - simply move to shady slopes once the snow surface becomes wet and unsupportable. Signs that the snow surface is becoming wet include rollerballs and pinwheels. Watch for terrain traps where the concrete-like wet snow can accumulate.

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Recent Activity

Wet avalanche activity Thursday afternoon was reported as the sun warmed the snow surface. In the Salt Lake mountains, this included

a wet slab avalanche near Hellgate in upper Little Cottonwood, and

loose-wet avalanches in Argenta and a wet slab on Circle Awl (photo below) in Big Cottonwood.

Snow and Weather

This morning: Skies are clear and temperatures are 35° - 40° F, which is about 10° degrees warmer than yesterday morning. Winds are from the south and have increased overnight, with gusts in the 20's and 30's mph at the mid and upper elevations.

Temperatures are cool enough and, with clear skies, there should be a moderate refreeze of the snow surface this morning.

Today will feature sunshine and the warmest temperatures of the season with 8,000' temperatures approaching 60° F and 10,000' temperatures in the mid 40's F. The winds will be from the south/southwest and will average in the teens with gusts in the 20's mph along exposed mid-elevation ridgelines. Upper elevation wind speeds will average in the 20's mph with gusts in the mid and upper 30's mph.

Winds may limit the softening of the snow surface at the upper elevations.

Extended Outlook: Sunshine and warm temperatures this weekend, with increasing clouds Sunday. The week ahead features unsettled weather with chances for snow.

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.

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