23-24

Very large deep wet slab in Republic Creek

Republic Creek
Cooke City
Code
WS-N-R5-D4-O
Elevation
10200
Aspect
N
Latitude
44.96820
Longitude
-109.96400
Notes

Photos taken 6/10/24 around 1pm. Wet slab in Republic Creek south of Cooke. I estimate 10-20’ deep and 1000’+ wide. The past 5-6 days have been warm, and previous night there was steady rain all night into the mid morning, so not out of the question that it happened within 24 hrs, likely within the last 1-3 days.

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Wet slab avalanche
Trigger
Natural trigger
R size
5
D size
4
Bed Surface
O - Old snow
Problem Type
Wet Snow
Slab Thickness
120.0 inches
Vertical Fall
2000ft
Slab Width
1500.00ft
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Photos taken 6/10/24 around 1pm. Wet slab in Republic Creek south of Cooke. I estimate 10-20’ deep and 1000’+ wide. The past 5-6 days have been warm, and previous night there was steady rain all night into the mid morning, so not out of the question that it happened within 24 hrs, likely within the last 1-3 days.

Cooke City, 2024-07-31

Photos taken 6/10/24 around 1pm. Wet slab in Republic Creek south of Cooke. I estimate 10-20’ deep and 1000’+ wide. The past 5-6 days have been warm, and previous night there was steady rain all night into the mid morning, so not out of the question that it happened within 24 hrs, likely within the last 1-3 days. GNFAC

Cooke City, 2024-07-31

Long-running wet sluff at Black Mtn

Date
Activity
Snowboarding

Skinned up the large NW snowfield on Black Mountain on Saturday July 6 to lap what remained. Surprisingly, coverage was very good. We descended just after 11am. Turns on the shallower sun-exposed aspects on the way down triggered large sluffs which ran for ~200ft on the top 2-3 inches of the snow.

Region
Out of Advisory Area
Location (from list)
Black Mountain
Observer Name
N. Dea

Very large deep wet slab in Republic Creek

Date

Photos taken 6/10/24 around 1pm. Wet slab in Republic Creek south of Cooke. I estimate 10-20’ deep and 1000’+ wide. The past 5-6 days have been warm, and previous night there was steady rain all night into the mid morning, so not out of the question that it happened within 24 hrs, likely within the last 1-3 days.

Region
Cooke City
Location (from list)
Republic Creek
Observer Name
Alex Marienthal

Video of avalanche on Gardner Headwall

Date

From IG message: "I was at the bottom of the Gardner Headwall when that avalanche happened. Feel free to share..."

Region
Out of Advisory Area
Location (from list)
Beartooth Pass

Large skier triggered avalanche on Gardiner headwall

Beartooth Pass
Out of Advisory Area
Code
ASu-R3-D2.5
Elevation
10800
Aspect
NE
Latitude
44.97010
Longitude
-109.46200
Notes

From IG messages on June 1 2024: "there were two riders and a dog on the slope. One rider was partially caught and rode out when everything stopped moving. The dog was very afraid and got stuck at the crown and rocks on the lookers left. Happened about 3pm today within the first 20 riders. Started with a small slide and propagated much larger when it got closer to the rocks."

From antoher ob. "At approximately 15:40 a D3 avalanche on the Gardiner headwall broke.  It was triggered by a snowboarder and his dog.  The run had already been tracked by skis and snow machines but the trigger point was slightly farther skier right and appeared to trigger a convex wind slab. Several skiers, boarders, and riders were in the area but there were no burials or injuries"

Number of slides
1
Number caught
0
Number buried
0
Trigger
Skier
Trigger Modifier
u-An unintentional release
R size
3
D size
2.5
Slab Thickness
20.0 inches
Vertical Fall
690ft
Slab Width
300.00ft
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

"At approximately 15:40 a D3 avalanche on the Gardiner headwall broke.  It was triggered by a snowboarder and his dog.  The run had already been tracked by skis and snow machines but the trigger point was slightly farther skier right and appeared to trigger a convex wind slab. Several skiers, boarders, and riders were in the area but there were no burials or injuries." Photo: C. Cavill

Cooke City, 2024-06-04

"At approximately 15:40 a D3 avalanche on the Gardiner headwall broke.  It was triggered by a snowboarder and his dog.  The run had already been tracked by skis and snow machines but the trigger point was slightly farther skier right and appeared to trigger a convex wind slab. Several skiers, boarders, and riders were in the area but there were no burials or injuries." Photo: C. Cavill

Cooke City, 2024-06-04