Persistent Slab Avalanches Tepee Basin

Tepee Basin
Southern Madison
Code
SS-AMu-R3-D2-O
Elevation
9000
Aspect Range
E-NE
Latitude
44.90960
Longitude
-111.19400
Notes

Snowmobile triggered avalanches that resulted in a partial burial with no injuries on Friday, Feb 21 and a second slide on Saturday, Feb 22 with no one caught.

 

Number of slides
2
Number caught
1
Number buried
1
Avalanche Type
Soft slab avalanche
Trigger
Snowmobile
Trigger Modifier
u-An unintentional release
R size
3
D size
2
Bed Surface
O - Old snow
Problem Type
Persistent Slab
Slab Thickness
32.0 inches
Vertical Fall
250ft
Slab Width
100.00ft
Weak Layer Grain type
Faceted Crystals
Weak Layer grain size
1.50mm
Weak Layer Hardness
4F
Snow Observation Source
Slab Thickness units
inches
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year