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Forecast for the Moab Area Mountains

Eric Trenbeath
Issued by Eric Trenbeath on
Thursday morning, April 14, 2022
A MODERATE avalanche danger exists on steep slopes that have recent deposits of wind drifted snow. Unstable drifts are most likely to be found on leeward slopes facing NW through N through SE. Look for fresh drifts on the leeward sides of ridge crests and terrain features such as gully walls and sub ridges. Triggered wind slabs may run far and fast on underlying slick, hard bed surfaces, and loose snow sluffs in steep terrain are also possible. In these conditions, even small avalanches can be dangerous in consequential terrain.
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Special Announcements
This weekend will see the end of regular avalanche forecasts.
Road Conditions: Bare dirt down low, mud and a few inches of rutted snow on the upper end.
Grooming: Done for the season.
Weather and Snow
7:00 a.m. weather data:
24 Hour Snow 0" 72 Hour Snow 8" Base Depth at Gold Basin 54" Wind SW 15-25 Temp 16F
The story is the wind. Moderate NW winds yesterday shifted to the SW overnight and they've been on the increase ever since. Today look for mostly sunny skies and breezy SW winds in the 15-25 mph range with possible gusts in the 30's. High temps at 10,000' will be near freezing. Continued dry, breezy, and steadily warming conditions are on tap through the weekend.
Snowpack
It was a bitter cold day under mostly sunny skies in the mountains yesterday with 8" of low density powder sitting on top of a hard surface. In our travels we encountered isolated, unstable wind drifts up to a foot deep on leeward slopes facing primarily north and east. Breezy SW winds today will continue to transport snow on to these aspects. We also observed evidence of loose snow avalanches that ran during the height of the storm on Tuesday. The underlying bed surface is slick and hard, and triggered avalanches may run faster and farther than you expect. This makes even small avalanches dangerous, especially in consequential terrain such as above cliffs or rock bands. Utilize slope cuts to see how the snow is behaving before jumping in to consequential terrain. If you see cracking or blocks of snow breaking off, you've found an unstable wind slab. In spite of the cold temps yesterday, the high angle of the sun dampened exposed surfaces, and many areas will be crusted over this morning.
Gold Basin SNOTEL site (10,000')
Storm Totals in Gold Basin
Wind Station on Pre Laurel Peak (11,700')
Recent Avalanches
In our travels Wednesday we observed a natural wind slab release on a NE aspect above treeline. About a foot deep and isolated to the ridge crest, it was about 50' wide but it did manage to entrain loose snow and run nearly full track. We also observed evidence of numeous, loose, dry avalanches that ran during the height of the storm on Tuesday in very steep terrain.
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Avalanche Problem #1
Wind Drifted Snow
Type
Location
Likelihood
Size
Description
Unstable areas of recently deposited wind drifted snow are your primary concern today. Fresh drifts are most likely to be found on leeward slopes facing NW through N through SE. Look for fresh drifts on the leeward sides of ridge crests and terrain features such as gully walls and sub ridges. Recent drifts are recognizable by their smooth, rounded appearance, and cracking is a sign of instability. Triggered wind slabs may run far and fast on the underlying slick bed surface, entraining more loose snow as they go. Utilize slope cuts and test slopes to see how the snow is behaving before you just jump right in.
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.
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.