Northern Gallatin

Natural wet slides on Republic Mtn

Republic Mountain
Cooke City
Code
WL-N
Elevation
9000
Aspect
NE
Latitude
45.00030
Longitude
-109.95400
Notes

From obs 4/30/21: "Yesterday I witnessed a big wet slide. It started on the exit from The Fin on Old Man Rays. Looks like it started on a rock band. Noon. Since people have been skiing The Fin recently I just happened to be looking up there and saw movement. It quickly quadrupled and then flowed across the ski line and over the cliff band. Spectacular. Flowed like a water fall for about a minute."

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Wet loose-snow avalanche
Trigger
Natural trigger
Problem Type
Wet Snow
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
20-21

Natural wet slides in Bridger Range, 4/26-4/28

BRIDGER RANGE
Bridger Range
Code
WL-N
Latitude
45.85120
Longitude
-110.94800
Notes

From obs: "I traversed the Bridger range yesterday (4/28/21). The alpine start was good and solid but I saw lots of recent avalanches that looked super wet, some that had broken a couple feet deep. Conditions were pretty stable until about 1300 when that most recent snow layer started to really want to slide on the crust. Once I was in the meadows between Baldy and the M, at about 1400, I started hearing/feeling really wet "whumps". 

Number caught
0
Number buried
0
Avalanche Type
Wet loose-snow avalanche
Trigger
Natural trigger
Problem Type
Wet Snow
Images
Wet slides in Bridgers 2
Wet slides in bridger range
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year
20-21

From obs: "I traversed the Bridger range yesterday (4/28/21). The alpine start was good and solid but I saw lots of recent avalanches that looked super wet, some that had broken a couple feet deep. Conditions were pretty stable until about 1300 when that most recent snow layer started to really want to slide on the crust. Once I was in the meadows between Baldy and the M, at about 1400, I started hearing/feeling really wet "whumps". Photo: J. Harrison

Avalanche Details: Natural wet slides in Bridger Range, 4/26-4/28
Forecast link: GNFAC Avalanche Forecast for Fri Apr 30, 2021
Bridger Range, 2021-04-30
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    • From obs: "I traversed the Bridger range yesterday (4/28/21). The alpine start was good and solid but I saw lots of recent avalanches that looked super wet, some that had broken a couple feet deep. Conditions were pretty stable until about 1300 when that most recent snow layer started to really want to slide on the crust. Once I was in the meadows between Baldy and the M, at about 1400, I started hearing/feeling really wet "whumps". Photo: J. Harrison

    Avalanche Details: Natural wet slides in Bridger Range, 4/26-4/28
    Forecast link: GNFAC Avalanche Forecast for Fri Apr 30, 2021GNFAC Avalanche Forecast for Mon May 3, 2021
    Bridger Range, 2021-04-30
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    • From obs 4/28/21: "Observed numerous natural wet loose slides probably occurring over the past 48 hours on NW-W-S aspects mid-elevation. Point releases from rock bands and couloirs shedding. Photo for example, which shows W facing bowl with slides visible from US-89 in Paradise Valley. These are between 8500’ and 9500’ on an unnamed peak just northeast of Dexter Point." Photo: T. Benson

    Avalanche Details: Natural wet loose slides in Absarokas
    Out of Advisory Area, 2021-04-29
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    • Natural new snow avalanches at Bridger and N. Madison

    Bridger Bowl
    Bridger Range
    Code
    SS-N-R1-D1.5-I
    Elevation
    8500
    Aspect
    NE
    Latitude
    45.81560
    Longitude
    -110.92300
    Number of slides
    4
    Number caught
    0
    Number buried
    0
    Avalanche Type
    Soft slab avalanche
    Trigger
    Natural trigger
    R size
    1
    D size
    1.5
    Bed Surface
    I - Interface between new and old snow
    Problem Type
    New Snow
    Images
    Natural new snow slab avalanche in northern Madison
    Natural slides across North Bowl road at Bridger
    Slab Thickness units
    centimeters
    Single / Multiple / Red Flag
    Multiple Avalanches
    Advisory Year
    20-21

    From obs (4/18/21): "...class split and dug three pits, one on NE, one on N, and one on NW at 7623'. HS averaged around 70 - 100 cms... The NE and NW facing pits showed rounding depth hoar and no sudden CT results. None of the ECTs fractured or propagated. The N facing slope still had preserved advanced depth hoar 3 mm in size (see image)..." Photo: J. Quinn


    Forecast link: GNFAC Avalanche Forecast for Fri Apr 23, 2021GNFAC Avalanche Forecast for Mon Apr 26, 2021
    Northern Madison, 2021-04-18
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    • Natural wind slabs in Absaroka

    Other place
    Out of Advisory Area
    Code
    SS-N-R1-D1
    Aspect
    NE
    Latitude
    45.49590
    Longitude
    -110.44900
    Notes

    From obs 4/9/21: "we saw widespread natural wind slabs on N-NE eastern slopes in the Northern Absarokas (photo)...."

    Number caught
    0
    Number buried
    0
    Avalanche Type
    Soft slab avalanche
    Trigger
    Natural trigger
    R size
    1
    D size
    1
    Problem Type
    Wind-Drifted Snow
    Images
    Natural wind slab in Absaroka
    Slab Thickness units
    centimeters
    Single / Multiple / Red Flag
    Multiple Avalanches
    Advisory Year
    20-21
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