Multiple pits yielded propagation in ECTs for a group in Beehive Basin on Saturday. Photo: E. Stutzman
Forecast link: GNFAC Avalanche Forecast for Sun Dec 1, 2024
Forecast link: GNFAC Avalanche Forecast for Sun Dec 1, 2024
Northern Gallatin
Forecast link: GNFAC Avalanche Forecast for Sun Dec 1, 2024
ECTP-14 in Beehive
Date
Activity
Skiing
Multiple pits yielded propagation in ECT test. Values varied between ECTP-9 and ECTP-22. Failures occurred on an ice crust ~20cm off the ground.
Pits were ~8,400’ to 8,500’ in elevation on across the basin on eastern and western aspects of Beehive basin proper. All pits (3) exhibited failure. We also noted occasional collapsing in the flats.
Region
Northern Gallatin
Location (from list)
Beehive Basin
Observer Name
E. Stutzman
Wind slab avalanche near summit of Mt Blackmore
Mt Blackmore
Northern Gallatin
Code
HS-ASc-R1-D1-I
Elevation
9900
Aspect
N
Latitude
45.44440
Longitude
-111.00400
Notes
Number caught
0
Number buried
0
Avalanche Type
Hard slab avalanche
Trigger
Skier
Trigger Modifier
c-A controlled or intentional release by the indicated trigger
R size
1
D size
1
Bed Surface
I - Interface between new and old snow
Problem Type
Wind Slab
Slab Thickness
12.0 inches
Slab Width
10.00ft
Snow Observation Source
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
"Intentionally triggered on a ski cut. Broke about 1 foot deep and 10 feet wide, ran on a hard compact surface below the soft wind slab. " Photo: Anonymous
Windslab on N aspect near the summit of Blackmore
Date
Activity
Skiing
Intentionally triggered on a ski cut. Broke about 1 foot deep and 10 feet wide, ran on a hard compact surface below the soft wind slab.
Region
Northern Gallatin
Location (from list)
Mt Blackmore
We noticed several natural loose snow avalanches (R1 D1) in steep rocky sections of the direct E face of Mt Blackmore. Though they were not large enough to bury someone, they would have strained a skier or rider through some nasty trees and cliffs. Photo: GNFAC
Avalanche Details: Loose Snow Avalanches Mt Blackmore
Forecast link: GNFAC Avalanche Forecast for Fri Nov 29, 2024
Northern Gallatin, 2024-11-28
Forecast link: GNFAC Avalanche Forecast for Fri Nov 29, 2024
Loose Snow Avalanches Mt Blackmore
Mt Blackmore
Northern Gallatin
Code
L-N-R1-D1-S
Elevation
9500
Aspect
E
Latitude
45.44440
Longitude
-111.00400
Notes
Dave and I toured into Blackmore basin today and skinned up the SE shoulder to the ridge. As we entered the basin, we immediately noticed several natural loose snow avalanches (R1 D1) in steep rocky sections of the direct E face. These looked to have occurred in the last 12 hours, and though they would not have buried someone, they would have strained one through some nasty trees and cliffs.
Number caught
0
Number buried
0
Avalanche Type
Loose-snow avalanche
Trigger
Natural trigger
R size
1
D size
1
Bed Surface
S - Avalanche released within new snow
Problem Type
New Snow
Vertical Fall
200ft
Slab Width
20.00ft
Attached Videos
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year