Island Park

Many natural storm snow slab avalanches at Bridger

Bridger Bowl
Bridger Range
Code
SS-N-R2-D1.5-S
Elevation
7500
Aspect Range
NE-E-SE
Latitude
45.81560
Longitude
-110.92300
Notes

There were many similar depth, 8-12" natural crowns along the ridge that broke this morning or overnight within the recent snow that fell over the weekend.

Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Natural trigger
R size
2
D size
1.5
Bed Surface
S - Avalanche released within new snow
Problem Type
New Snow
Slab Thickness
12.0 inches
Vertical Fall
300ft
Slab Width
150.00ft
Slab Thickness units
inches
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year

Natural Loose snow avalanches at Bridger and Beehive

Beehive Basin
Bridger Range
Code
WL-N-R1-D1.5-I
Elevation
8500
Aspect Range
NE-E-S
Latitude
45.34070
Longitude
-111.39100
Notes

Widespread natural loose snow avalanches on 5/4 in Bridger and Beehive. 6-12" of snow that fell on 5/3 was quickly reactive when the sun came out with temps to 40 F on 5/4.

Number caught
0
Number buried
0
Avalanche Type
Wet loose-snow avalanche
Trigger
Natural trigger
R size
1
D size
1.5
Bed Surface
I - Interface between new and old snow
Problem Type
New Snow
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year

Skier triggered Avalanche in Beehive Basin

Beehive Basin
Northern Madison
Code
L-AS-R2-D1.5-I
Elevation
9000
Aspect
W
Latitude
45.32250
Longitude
-111.38200
Notes

5/3/22 at approximately 4:00pm a storm sslabavalanche occurred in beehive basin on a west asaspect9000 ft. This slslabas 6-8” deep and propagated around 50’. No one was buried, however we aren’t sure if anyone was caught because we were not the party who triggered this avalanche. We did witness the party drop in but quick went out of sight.

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Loose-snow avalanche
Trigger
Skier
R size
2
D size
1.5
Bed Surface
I - Interface between new and old snow
Problem Type
New Snow
Slab Thickness
10.0 inches
Vertical Fall
400ft
Slab Width
50.00ft
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Storm snow Avalanche in Beehive Basin

"5/3/22 at approximately 4:00pm a storm slab avalanche occurred in beehive basin on a west aspect @9000 ft. This slab was 6-8” deep and propagated around 50’. No one was buried, however we aren’t sure if anyone was caught because we were not the party who triggered this avalanche. We did witness the party drop in but quick went out of sight." Photo: H. Bigos-Lowe

Northern Madison, 2022-05-04

Natural pinwheel from snow falling off tree

On 4/18/22 near Cooke City we witnessed natural rollerballs and pinwheels by 11 am, and a couple wet loose slides below cliffs on southerly slopes around noon, and were able to easily trigger pinwheels on west-southwest aspects around 1230-1pm. Photo: GNFAC

Cooke City, 2022-04-20