Avalanche

Surprise Lake

Travis BaldwinTetons
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Observation photo 1Observation photo 2

Quick report

Cracking
widespread
Collapsing
widespread

Talkative and reactive snowpack all day from the valley floor up to Surprise lake.  My subjective observation was that low and mid-elevation slopes were collapsing at a higher frequency and greater distribution than upper elevations, but it was happening everywhere. Widespread cracking as well and several small releases on convex features. All hand pits failed on isolation on 1/4 interface. New snow depths ranged from 18 to 24 inches. Noticeable settlement in the last several days and the new snow felt  more cohesive and slabby than it did a few days ago.

Widespread cracking and collapsing starting in the valley and across all elvation bands. One remote trigger in steep, convex terrain connected to lower angle terrain that we travelled through (D2, 20 inch crown)

Weather

Cloud Cover
broken
Wind Loading
light
Snow Avail For Transport
large amounts

AM was clear and calm. Increasing clouds and wind throughout the day. Alpine winds (variable) were light in the afternoon gusting to moderate. Wind transort noted along ridges. Periods of light snow.

Snowpack

Wx Station Interval Board: last cleared January 4th,  right before the last storm

23.5 inches snow

3.95 inches water

Avalanche

Size
D2 R2
Type
SS
Aspect
NE
Trigger
AS
Elevation
9400 ft