Cooke City

Avalanche in the Rasta Chutes

Rasta Chutes
Cooke City
Code
R3-D2-O
Aspect
W
Latitude
45.07090
Longitude
-109.94500
Notes

Riders near lulu pass saw a recent avalache in the Rasta Chutes. 

Number of slides
1
Number caught
0
Number buried
0
R size
3
D size
2
Bed Surface
O - Old snow
Problem Type
Persistent Weak Layer
Slab Thickness
48.0 inches
Snow Observation Source
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Avalanche Lulu Pass

Date
Activity
Skiing
Snowmobiling

Saw this avalanche in the Rasta Chutes today, not sure if it was already sent in. Here is a picture from across the valley. The avalanche ran almost to the bottom of the chute, covering sled tracks heading into tradgenic. 

Region
Cooke City
Location (from list)
Rasta Chutes
Observer Name
Jake Mundt

Dozens of large avalanches

Date

We rode out to the avalanche that was triggered yesterday on Henderson Mtn. It broke over 2000' wide (measured on GPS) and all the way up to the ridgeline, 6-10' deep and maybe 12-15' deep at the deepest section. There were a couple hundred feet of slope that had not slide between this one and the similarly large slide to the north last weekend. The deepest debris was probably 15-20'.

We also saw a fresh huge avalanche on the south side of Scotch Bonnet that happened today or late yesterday. 4-6' deep and 300' wide. Both slides were R4-D3-O. There was another fresh slide in the Rastas (one that didn't slide last weekend) that looked fresh yesterday or today, 4' deep hard slab, R3-D2-O, and one small but deep slab on the north side of Scotch Bonnet, 6' deep x 30' wide, R1-D1.5.

We could see evidence of previous large avalanches in the cirque on Republic Mtn. and in east Woody Creek south of town. There were widespread avalanches along Henderson Bench as well, below the steep break over in the trees, 3'+ deep breaking across multiple terrain features through thick trees, most of the bench slid, and appeared to have happened last weekend.

On my drive to Cooke City I saw old slab avalanches in YNP near Mammoth and on Abiathar and Ampitheater among other places. These appeared to have happened earlier in the week. I also saw a more fresh looking persistent slab avalanche on Barronette, 2-3' deep and as wide as its terrain feature, 100-200' (photo).

Pretty scary. Stay safe out there.

Region
Cooke City
Location (from list)
COOKE CITY
Observer Name
Alex Marienthal

More Natural Activity on Republic Mountain

Republic Mountain
Cooke City
Code
N
Aspect Range
NE-NW
Latitude
45.00030
Longitude
-109.95400
Notes

From obs on 03/07: "observed several crowns on Republic from Town Hill, likely from 03/06. Ray's had a slide on its west end which appeared to be isolated from the large avalanche that was filmed on the shoulder/Ray's. We saw up to 4 other crowns in Republic bowl on NE, N, and NW aspects including one that broke on the NE facing spines looker's left of the Fin that got legs and ran into the trees out of site (R1-D2?)."

 

Number caught
0
Number buried
0
Trigger
Natural trigger
Problem Type
Persistent Weak Layer
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year