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Observation: Laurel Highway

Observation Date
1/22/2024
Observer Name
Garcia
Region
Moab » Laurel Highway
Location Name or Route
Laurel Highway
Weather
Sky
Overcast
Precipitation
Light Snowfall
Wind Speed
Calm
Weather Comments
Calm winds, warm temps, and light snowfall off and on today. Snowfall became S1 around 2 PM and was wet.
Snow Characteristics
New Snow Depth
8"
New Snow Density
Medium
Snow Surface Conditions
Powder
Dense Loose
Snow Characteristics Comments
A couple more inches trickled in since 9 PM Sunday night, bringing us up to 8 inches for the storm. Creamy, medium density snow made for a nice refresh. We got some water with this storm (1.2 inches since 11 PM Saturday). With this much water, I expected a storm slab within the new snow. Good news, the new snow is not behaving like a slab. Hand shear tests and shovel tilts show the new snow is well bonded to the old snow surface, and the new snow just falls apart when attempting to pull out a column.
Red Flags
Red Flags
Cracking
Collapsing
Poor Snowpack Structure
Red Flags Comments
I had collapsing in specific areas today. While approaching a pit site in the Darkside, I had a BIG, RUMBLING collapse. Later I stepped off the skin track and onto Julie's Backside and experienced another BIG, THUNDERING collapse. I saw some shooting cracks associated with this collapse. Another party reported two audible collapses while skiing in the Northwoods/Westwoods area. Poor snowpack structure remains. I found weak snow in my pits on NE and SW aspects.
Avalanche Problem #1
Problem
Persistent Weak Layer
Trend
Same
Problem #1 Comments
The two loud collapses I experienced on NE aspects tell me the PWL is still sensitive to our weight. The first collapse occurred while approaching my pit site on the Darkside. I got an ECTP 18 in this pit. 1 week ago I dug in a similar spot. There is more snow, and more of a load today, but the results are similar. To compare this week's pit to last week's, see last week's observation here.
Later in the day I checked out some southerly aspects. These aspects didn't get any sun today and the skiing quality is good. I found poor snowpack structure and got ECTP 28 in this pit on Dave's Run. The failure occurred on facets beneath a hard crust. This is the same layer that failed (ECTP 24) in our SW facing pit on 1/14. I didn't experience any collapsing on the Southerly aspects. I traversed across the top of the "Land of 1,000 Rocks" on the way to Westwoods with no collapsing. Southerlies are less sensitive than the Northerlies, but poor structure and propagation has me staying out of avalanche terrain for now. Riders can find the "sweet spot" and trigger an avalanche 2 feet deep.
It's nice to see some new snow, yet another incremental loading event for our snowpack. Not enough to bring the house down, but enough to keep the PWL sensitive and right near it's breaking point. It seems we are entrenched in Considerable danger for quite some time.
These two photos show the cracking associated with the very loud collapse on Julie's Backside.
Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
Considerable
Coordinates