Avalanche: Neffs 2/25/2010

Observer Name: 
John
Observation Date: 
02/25/2010
Occurrence Date: 
02/25/2010
Occurrence Time: 
Unknown
Region: 
Salt Lake
Neffs
Printer-friendly version

Location

40° 39' 22.41" N, 111° 44' 41.3484" W
Avalanche Characteristics
Elevation: 
8100'
Aspect: 
North
Slope Angle: 
35
Trigger: 
Unknown
Trigger: additional info: 
Unintentionally Triggered
Avalanche Type: 
Hard Slab
Weak Layer: 
Surface Hoar
Depth (avg): 
18"
Width: 
200'
Vertical: 
Unknown
General Comments

Thomas Fork, Neffs Canyon
Light snow, no wind

broken record: soft slab, N aspect, approx. 8100' to 7850', 35 degree+, 1'-1.5' depth, 200'+ wide, approx. 5 ft deposition at spots,  surface hoar weak layer, 1 skier remotely triggered from uptrack.  Also observed two other slides (likely naturals) further up Thomas Fork.

from 7800' - 8200' (high as I went), multiple cracking & collapses

no wind, wind transported snow issues observed

Around 8000' in Neffs I've seen multiple pockets of surface hoar-caused slides & cracking in the last week.  Up high in LCC/BCC haven't seen it.  For several years I've wondered if one of the standard routes we use would be within the runout zone of the slide path that went today, and indeed it is - the toe of the slide covered nearly 100 ft of uptrack.  Good lesson.  Needless to say the chosen ski route out was very conservative.

Resize of IMGP0288.JPG
General Comments 2
Resize of IMGP0293.JPG
General Comments 3
Resize of IMGP0298.JPG
General Comments 4
Resize of IMGP0299.JPG
Javascript is required to view this map.

Site Built by Dharmatech
Site Refresh by Flint Creative