21-22

Test Test Observation from GNFAC

Date
Activity
Snowbiking

Temperatures to mid 90s F expected for the next week. We may see the season's first snowfall as early as 3-4 weeks. There is minimal snow remaining at the highest elevations. Avalanche danger seems low.

Photos from August 6, inversion on Clarks Fork and August 16, Mountain Goats on BT Pass (2022).

Region
Lionhead Range
Location (from list)
Beehive Peak

this is a test obs

Date
Activity
Skiing

Really warm and crackly.

Region
Bridger Range
Location (from list)
Battle Ridge
Observer Name
Jim Earl

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

Emigrant peak observations

Date
Activity
Skiing

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. 
 

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!

Region
Northern Gallatin
Location (from list)
Emigrant Peak
Observer Name
Colin Chupik

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

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

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

Roller-ball to point release to wet slide

Date
Activity
Skiing
Snowmobiling

We saw a point release that mobilized a slab of new snow on an East facing slope off of mt fox in cooke city. 
 

cool example of a roller ball turning into a point release and into a wet slide avalanche. 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

Region
Cooke City
Location (from list)
COOKE CITY
Observer Name
Colin Chupik