UDOT PLANNED AVALANCHE CLOSURES!!

Forecast for the Skyline Area Mountains

Brett Kobernik
Issued by Brett Kobernik for
Sunday, February 10, 2019
The overall avalanche danger is CONSIDERABLE today.
HUMAN TRIGGERED AVALANCHES ARE LIKELY TODAY.
Slopes steeper than 30 degrees especially where the wind has been drifting snow are likely places to trigger an avalanche again today.
Low
Moderate
Considerable
High
Extreme
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Weather and Snow
The Skyline picked up a couple of inches of snow out of last nights minor weather disturbance. Riding conditions remain good to excellent. Don't let this cloud your judgment for avalanche safety!!
We'll see increasing southwest wind today with high temperatures around 20 degrees and increasing clouds this afternoon. Another weather impulse will move through tonight bringing perhaps 3 to 5 inches of new snow by Monday morning. The long term weather outlook looks active with weather models advertising lots of snow coming later this week.
Recent Avalanches
There was another avalanche fatality involving a snowmobiler in the Uintas yesterday. A 49 year old male was out with his 14 year old son and another friend. The father triggered the avalanche while hill climbing. He was wearing an avalanche beacon but his friend was not well versed in how to use them making things difficult to perform a rescue. We are not sure if a fast extrication would've been enough to save him as it sounds like there was quite a bit of trauma involved in the large amount of debris. ACCIDENT REPORT HERE
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Avalanche Problem #1
Persistent Weak Layer
Type
Location
Likelihood
Size
Description
While training with Search and Rescue crews on Saturday, a number of us experienced collapsing of the snowpack. This is when the snowpack makes a loud "WHOOMP" and you may feel the snow settle rapidly underneath you. This is a BIG RED FLAG for avalanche danger. We were also able to still produce clean shears and full propagation in snowpit tests. In other words, snowpit tests results showed poor stability. This is all caused by buried weak layers of sugary snow deeper in the snowpack. Until we see less avalanche activity and less collapsing and start seeing better results in our snowpit tests, this buried weak snow remains a serious concern.
Avalanche Problem #2
Wind Drifted Snow
Type
Location
Likelihood
Size
Description
The southwest wind is supposed to increase today which will drift all the loose powder snow. Slopes that are on the east half of the compass are the most likely places to see fresh drifts form. These drifts are often the most sensitive when they are forming and directly after they've formed. The photo below is a natural avalanche that released due to wind drifted snow. It was northwest of Huntington Reservoir. Photo submitted by Calan Cook.
Additional Information
This forecast is from the U.S. Forest Service, which is solely responsible for its content. This forecast describes general avalanche conditions and local variations always occur.