12th Annual Utah Snow & Avalanche Workshop Open and Motorized Sessions November 2.

Observation: Michigan City

Observation Date
4/10/2019
Observer Name
Chester
Region
Salt Lake
Location Name or Route
Michigan City
Red Flags
Red Flags
Recent Avalanches
Heavy Snowfall
Wind Loading
Cracking
Poor Snowpack Structure
Avalanche Problem #1
Problem
Wind Drifted Snow
Trend
Increasing Danger
Problem #1 Comments
Blizzard like conditions w moderate snowfall and strong west winds were creating snow drifts 2-3’.  I saw a small skier triggered and triggered one small wind slab. Both 2’ deep 20 feet wide steeper than 34 degrees.  Snow drifts were low density -fist to 4 finger.
Wind drifts were well down the drainage.  Hard to tell pi rates with all the wind but car didn’t have much snow on it (guessing .5” /hr at car.
this was the main threat today and tomorrow.
Comments
per the forecast it did look white and winter but below it was manky wet. Possibly for a step down dry to wet avalanche.
 
Poor snowpack structure.  New snow bonded well to old snow.  There was a density inversion 1” down from surface. Old snow was buried wet n sloppy.  The old  surface snow refroze 1” deep and was penetrate w ski pole and boot would penetrate ankle to shin depending on elevation.  Ski would penetrate occasionally during bottom feeding below 9300.  Above 9500 ish problem went away.  I am not real familiar with this cold front setup not sure what to think. I have some theory's relating to strength and load that I won’t share, and hoping for the answer key shortly.  They closed lcc canyon 2pm for avy work.  Photo small wind slab skier triggered.
 
 
Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
None

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