Northern Gallatin

Large avalanche N face Blackmore

Mt Blackmore
Northern Gallatin
Code
HS-NC-R3-D3.5-O
Elevation
9800
Aspect
N
Latitude
45.44440
Longitude
-111.00400
Notes

Large avalanche North face Mt Blackmore. Appeared to be potentially triggered by cornice fall from above. Crown propagated across majority of the bowl and was quite large in places. 

From Obs: "Cornice fall triggered a big one. Looks to be real fresh. last night or this morning    Broke across the whole bowl and up to 8 feet deep maybe more right in the middle. Broken trees in the debris, And ran out of sight."

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Hard slab avalanche
Trigger
Cornice fall
R size
3
D size
3.5
Bed Surface
O - Old snow
Problem Type
Persistent Weak Layer
Slab Thickness
96.0 inches
Vertical Fall
1000ft
Slab Width
600.00ft
Images
Large avalanche N face Blackmore Full
Large avalanche N face Blackmore Debris
Large avalanche N face Blackmore 1
Attached Videos
Video Overview of Mount Blackmore Avalanche - 11 March 2024
Snow Observation Source
Large avalanche N face Blackmore
deep slab north side mt blackmore
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
23-24

Skiers noted a large natural avalanche on the North face of Mt Blackmore that broke overnight. The crown was around 8 feet deep. Photo: E. Roman

Avalanche Details: Large avalanche N face Blackmore
Forecast link: GNFAC Avalanche Forecast for Tue Mar 12, 2024GNFAC Avalanche Forecast for Thu Mar 14, 2024GNFAC Avalanche Forecast for Sun Mar 17, 2024GNFAC Avalanche Forecast for Sat Mar 23, 2024
Northern Gallatin, 2024-03-11
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    • Large avalanche N face Blackmore

    Date
    Activity
    Skiing

    Large avalanche North face Mt Blackmore. Appeared to be potentially triggered by cornice fall from above. Crown propagated across majority of the bowl and was quite large in places. 

    Region
    Northern Gallatin
    Location (from list)
    Mt Blackmore
    Observer Name
    Erica Roman

    deep slab north side mt blackmore

    Date
    Activity
    Skiing

    Cornice fall triggered a big one. Looks to be real fresh. last night or this morning    Broke across the whole bowl and up to 8 feet deep maybe more right in the middle    Broken trees in the debris, And ran out of sight.  

    Region
    Northern Gallatin
    Location (from list)
    Mt Blackmore
    Observer Name
    Jake Schack

    Natural Avalanches nera Alex Lowe Peak

    Alex Lowe Peak
    Northern Gallatin
    Code
    N
    Aspect Range
    N-NE
    Latitude
    45.43700
    Longitude
    -110.99600
    Notes

    Snowboarders in Hyalite on 03/09/2024 saw several avalanches in the upper South Cottonwood drainage. 

     

    Number caught
    0
    Number buried
    0
    Trigger
    Natural trigger
    Images
    Natural Avalanche Near Alex Lowe Peak, 3
    Natural Avalanche Near Alex Lowe Peak, 2
    Natural Avalanche Near Alex Lowe Peak, 1
    Snow Observation Source
    Natural Avalanches Alex Lowe
    Slab Thickness units
    centimeters
    Single / Multiple / Red Flag
    Multiple Avalanches
    Advisory Year
    23-24
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