21-22

Northwest oriented slope. Slide was covered by new snow from the previous nights storm. One of many n facing slides observed

From 5/21/22: "other older slides were visible on a wind loaded NW oriented slopes at the bottom of the basin. Still feels like winter out there with lots of light snow up high!"  Photo: C. Chupik

Out of Advisory Area, 2022-05-26

Slide crown visible above tracks to the left of the cornice

From 5/21/22: "Triggered a small slide underneath the cornice of the southeast chute off of Emigrant peak. The slide was 50 ft wide,  4 inches deep, and ran for about 100 ft. The slide was not large enough to knock you off your feet (D1). The latest storm had deposited about 12 inches of new snow underneath the cornice." Photo: C. Chupik

Out of Advisory Area, 2022-05-26

Natural wind slabs and wet slide, Cooke and Blackmore 5/13-5/15

Code
N-R1-D1.5-I
Elevation
10000
Aspect Range
E-NE-N-NW
Number of slides
3
Number caught
0
Number buried
0
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

Natural wind slab on Blackmore

From 5/13/22: "saw a lot of recent slide activity on East facing slopes above 9000’ in Blackmore and adjacent basins. This one was at around 9800’ between Blackmore and Elephant Peak. Also the wind was ripping up top in the afternoon. Moving a lot of snow from W to E." Photo: JR Mooney

Northern Gallatin, 2022-05-18

Roller-ball to point release to wet slide

From obs 5/15/22: "We saw a point release that mobilized a slab of new snow on an East facing slope off of mt fox in cooke city. The new snow had heated up considerably during the day on Sunday. There were some older crowns below a cornice to the north of mt fox (second photo) with slide debris that extended down the whole face (600ft). Likely slid during a storm within the last week." Photo: C. Chupik

Cooke City, 2022-05-18

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