Wind Slabs

Location Name: 
Wind Slabs and Conditions Update
Region: 
Williams Lake Area
Date and time of observation: 
Thu, 03/30/2017 - 10:39
Location Map: 
United States
36° 33' 27.3888" N, 105° 26' 25.5336" W
US


Red Flags: 
Recent loading by new snow, wind, or rain

Observation made by: Forecaster
Snowpit Observations
More detailed information about the snowpack: 

Winds continued to blow today with snow moving near and below treeline.  Winds were out of the W blowing in the mid teens.  We've had close to 40" of snow in the last week but things seem to be bonding well.  Wind Slabs are noticeable above and near treeline and are sitting on several different layers.  On solar aspects these wind slabs are sitting on sun/ melt-freeze crusts from Monday.  On more shadied slopes there is no crust.  All areas we've been have a hard melt-freeze crust from the two weeks of high pressure and warm temps that proceeded these series of storms.  All this new snow has settled and condensed and every snow pit we've been in, the new snow is bonding well to this crust.  With an atypical loading from the NE winds we are seeing snow higher up on slopes that what is typical.  These wind slabs are sitting on a shallow weak snowpack due to not having snow for most of the year.  

Temperatures were warming quickly today and snow was getting wet and sloppy even by 10:30AM.  Aspects, especially west ones had a sun crust from yesterdays afternoon sun.  

Video 1: Wind slab on a north aspect around treeline.

Weather Observations
Blowing Snow: 
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More detailed information about the weather: