22-23

Beehive field day

Date
Activity
Skiing

It was cold and snowing most of the day with 1-2" of low density new snow by 3pm. We dug 3 pits: at the top of Tyler’s, and top and Middle of Spanky’s. Our pits were 40-70 cm deep and we had ECTXs and a couple ECTNs(23-25) around 30cm above the ground on top of older, slightly more faceted snow. For now stability is generally good with primary problems being wind slabs. It seems the snowpack is shallow enough it will only get weaker without much snow in the forecast.

 

Region
Northern Madison
Location (from list)
Beehive Basin
Observer Name
Alex Marienthal

Large collapses near Cooke City

Henderson Mountain
Cooke City
Code
AS
Elevation
9800
Aspect Range
E-SE-SW
Latitude
45.05240
Longitude
-109.94500
Notes

From email: "Skied around Mt. Henderson the last 2 days-... we experienced at least 6 large collapses while touring the last 2 days, often after 10+ people up the same skin track."

Number of slides
1
Number caught
0
Number buried
0
Trigger
Skier
Problem Type
Persistent Weak Layer
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Storm slabs at Bridger Bowl

Bridger Bowl
Bridger Range
Code
SS-ASc-R2-D1-S
Elevation
7800
Aspect
NE
Latitude
45.81560
Longitude
-110.92300
Notes

From obs: "Saw some cracking and propagation of a 6-8" storm slab on steeper terrain near the Bridger Lift. Gentle upslope winds seem to have compacted a slab near some terrain features, and I got a small propagation at the edge of the Sluice Box gully where the slope angle tipped up near 40."

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Skier
Trigger Modifier
c-A controlled or intentional release by the indicated trigger
R size
2
D size
1
Bed Surface
S - Avalanche released within new snow
Problem Type
Wind-Drifted Snow
Slab Thickness
8.0 inches
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year