22-23
Natural and sledder triggered slides, Lionhead
LIONHEAD AREA
Lionhead Range
Code
Latitude
44.72920
Longitude
-111.32300
Notes
Dave and Doug rode around and saw multiple natural and 1 sledder triggered slide on Lionhead. Some were thin and just involved news snow and others were deeper and broke on the buried surface hoar layer.
Number caught
0
Number buried
0
Attached Videos
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year
Natural and sledder triggered slides, Lionhead
Date
Activity
Snowmobiling
Dave and Doug rode around and saw multiple natural and 1 sledder triggered slide on Lionhead. Some were thin and just involved news snow and others were deeper and broke on the buried surface hoar layer.
Region
Lionhead Range
Location (from list)
LIONHEAD AREA
Observer Name
Doug Chabot
Woody Ridge Natural
Woody Ridge
Cooke City
Code
Latitude
44.99540
Longitude
-109.91400
Notes
Observed a point release that appeared to have stepped down. This occurred SE of the “rip curl” zone. We also noticed significant sun effect and a warming trend throughout the day. 1/17/23
Number caught
0
Number buried
0
Images
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
Observed a point release that appeared to have stepped down. This occurred SE of the “rip curl” zone. We also noticed significant sun effect and a warming trend throughout the day. 1/17/23
Avalanche Details: Woody Ridge Natural
Cooke City, 2023-01-19
Natural avalanche Muddy Creek headwaters
Yellowstone Club
Northern Madison
Code
SS-N-R1-D1-I
Elevation
9000
Aspect
E
Latitude
45.21170
Longitude
-111.47800
Notes
Natural soft slab release likely in the last 36 hours. Seen from in-bounds at the Yellowstone Club. Avalanche location at 45.2116512 N 111.47811 W at the headwaters of Muddy Creek.
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Natural trigger
R size
1
D size
1
Bed Surface
I - Interface between new and old snow
Problem Type
Persistent Weak Layer
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
Natural soft slab release likely in the last 36 hours. Seen from in-bounds at the Yellowstone Club. Avalanche location at 45.2116512 N 111.47811 W at the headwaters of Muddy Creek.
Avalanche Details: Natural avalanche Muddy Creek headwaters
Forecast link: GNFAC Avalanche Forecast for Sun Jan 22, 2023
Northern Madison, 2023-01-19
Forecast link: GNFAC Avalanche Forecast for Sun Jan 22, 2023
Another slide was seen from the highway in Argentina Bowl. This slide appears to be a shallow soft slab that ~50 ft wide and ran ~500 vertical ft.
Avalanche Details: Snowboarder triggered slide, Saddle Peak
Forecast link: GNFAC Avalanche Forecast for Sat Jan 21, 2023
Bridger Range, 2023-01-19
Forecast link: GNFAC Avalanche Forecast for Sat Jan 21, 2023
Whumpf near Sawtelle Peak
Sawtelle Peak
Island Park
Code
Latitude
44.56110
Longitude
-111.44300
Notes
I dug one pit at 8200’ NE aspect in Yale ECTX. Kevin was a little lower and around on the east side of Sawtell, he felt a big wumph. He didn’t confirm what layer, but this is probably your buried SH.
Number caught
0
Number buried
0
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Red Flag
Advisory Year
Whumpf near Sawtelle Peak
Date
Activity
Snowmobiling
I dug one pit at 8200’ NE aspect in Yale ECTX. Kevin was a little lower and around on the east side of Sawtell, he felt a big wumph. He didn’t confirm what layer, but this is probably your buried SH.
Region
Island Park
Location (from list)
Sawtelle Peak
Observer Name
Bret Rasmussen