20-21

Small, natural avalanches outside Cooke City

COOKE CITY
Cooke City
Code
SS-N
Aspect Range
W and N
Latitude
45.02020
Longitude
-109.93800
Notes

... 3 photos are from around Cooke City, all viewed from the road today (photos 1 and 3 are westerly aspects).  Photo 2 is a northerly a aspect   All mid elevations.

Number of slides
3
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Natural trigger
Problem Type
New Snow
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year

Many snowmobile triggered slides at Lionhead

Lionhead Ridge
Lionhead Range
Code
SS-AMu-R2-D2-O
Elevation
9000
Aspect Range
SE-E-NE
Latitude
44.71450
Longitude
-111.31800
Notes

Many snowmobile triggered avalanches were observed after new snow overloaded a very weak snowpack.

Number of slides
12
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Snowmobile
Trigger Modifier
u-An unintentional release
R size
2
D size
2
Bed Surface
O - Old snow
Problem Type
Persistent Weak Layer
Attached Videos
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year

Natural avalanche south of Cooke

Hayden Creek
Cooke City
Code
SS-N-R2-D2
Elevation
10000
Aspect
E
Latitude
44.99520
Longitude
-109.90800
Notes

Natural avalanche observed on Climax path in Hayden creek on 1/13/21.

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Natural trigger
R size
2
D size
2
Problem Type
Wind-Drifted Snow
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year