Weather and Avalanche Log for Mon Feb 5, 2024
AVALANCHE WARNING for Island Park, Lionhead, S. Madison, S. Gallatin
23-24
Avalanches in Beehive Basin
Date
Activity
Skiing
Multiple natural avalanches and at least one suspected human triggered dry loose in Beehive Basin. Most naturals appeared to have run either last night or yesterday (2/3/24), with a couple potentially older slides. New snow and rapidly changing cloud cover/depth perception made it a bit hard to be sure. Suspect one skier trigged dry loose in W facing trees. One of the W-facing chutes further up valley was also observed to have a crown line at approximately 9000' (no photo)
Region
Northern Madison
Location (from list)
Beehive Basin
Observer Name
Matt Zia
Island Park Observations
Date
Activity
Snowmobiling
From email: "Temp 27. 4'' new snow, Rate S1, Sky OVC. NE aspect, SE winds, L observed localized drifting. Elevation 7790’. conducted several CT tests scored CTM and CTH (SC) ECTP 21, NE of Two Top on a layer of SH 35cm from surface. New snow on a melt freeze crust very reactive CTE 15cm from surface. Possible new layer of concern as new snow accumulates. No recent avalanches observed."
Region
Island Park
Collapsing, Island Park
Island Park
Code
Latitude
44.46890
Longitude
-111.14700
Notes
No avalanches observed. A foot of new snow in 24hrs, 3-4 inches throughout the day. Strong wind gusts in the morning into early afternoon, drifting in open areas and higher elevations. Experienced multiple whoomphing in an open flat area.
Number caught
0
Number buried
0
Problem Type
Persistent Weak Layer
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Red Flag
Advisory Year
New Snow and old snow collapsing
Date
Activity
Snowmobiling
No avalanches observed. A foot of new snow in 24hrs, 3-4 inches throughout the day. Strong wind gusts in the morning into early afternoon, drifting in open areas and higher elevations. Experienced multiple whoomphing in an open flat area.
Region
Island Park
Avalanche on Woody Ridge, Cooke City
Woody Ridge
Cooke City
Code
HS-N-R2-D2-O
Elevation
10150
Aspect
NW
Latitude
44.96920
Longitude
-109.92800
Notes
A recent natural avalanche on seen on the NW aspect of Woody Ridge at 10,000'. Appeared to of happened today, 02/04/2024.
From obs: "Observed a fresh avalanche this afternoon on Woody Ridge, South of the Submarine. Northwest facing slope, Approximately 10,150'."
Number caught
0
Number buried
0
Avalanche Type
Hard slab avalanche
Trigger
Natural trigger
R size
2
D size
2
Bed Surface
O - Old snow
Problem Type
Persistent Weak Layer
Images
Attached Videos
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
A recent natural avalanche on seen on the NW aspect of Woody Ridge at 10,000'. Appeared to of happened today, 02/04/2024. Photo: N. Gaddy
Avalanche Details: Avalanche on Woody Ridge, Cooke City
Forecast link: GNFAC Avalanche Forecast for Mon Feb 5, 2024
Cooke City, 2024-02-04
Forecast link: GNFAC Avalanche Forecast for Mon Feb 5, 2024
Cracking and Collapsing at Bacon Rind
Bacon Rind
Southern Madison
Code
Latitude
44.96090
Longitude
-111.10000
Notes
Skiers heard and felt numerous large collapses as well as saw cracking while traveling uphill at Bacon Rind.
Number caught
0
Number buried
0
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Red Flag
Advisory Year
From obs: "We heard numerous large-scale collapses and witnessed the development of propagating tensile fractures on a 20°-25° slope along the skin track.... We skied this location 4 times this week. Each time, we experienced collapsing and fracturing within the snowpack. and stuck to skiing conservative, low-angle lines." Photo: T. Kalakay
Avalanche Details: Cracking and Collapsing at Bacon Rind
Forecast link: GNFAC Avalanche Forecast for Mon Feb 5, 2024GNFAC Avalanche Forecast for Wed Feb 7, 2024
Southern Madison, 2024-02-04
Forecast link: GNFAC Avalanche Forecast for Mon Feb 5, 2024GNFAC Avalanche Forecast for Wed Feb 7, 2024