Northern Gallatin

Small Avalanche in Portal Creek

Portal Creek
Northern Gallatin
Code
Latitude
45.26940
Longitude
-111.14000
Notes

Riders on 02/29/2024 observed a small avalanche while riding in Portal Creek. They estimated that the avalanche likely happened before a storm that began on 02/27/2024. 

Number of slides
1
Number caught
0
Number buried
0
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Portal Creek Meadows Winds

Date
Activity
Snowmobiling
Ice Climbing

We rode portal creek meadows as an exploratory mission as neither Kyle Marvinney nor myself had ventured there much. New snow from the previous storm cycle had settled to about 4 inches, but it was hard to tell due to widespread wind effect. Judging from the snow, temps up there have mostly stayed below freezing during this previous warm cycle (after Monday/Tuesday storm), though there is fairly supportable crust below the storm layer. winds were blowing consistently 10mph up high gusting to and estimated 25mph. We observed one small avalanche in the riding area that occurred before the recent storm cycle and seemed characteristic of other similarly sized avalanches we have been observing throughout the season.

Region
Northern Gallatin
Location (from list)
Portal Creek
Observer Name
Alexander Jett

Whumphs and Cracking in Hyalite

Hyalite - main fork
Northern Gallatin
Code
Latitude
45.44720
Longitude
-110.96200
Notes

Skiing some dog pow across Hyalite reservoir between 7200-7800’ on a NE pitch I got lots of whumphs and shooting cracks while braking trail. This was a shallower snowpack than most other areas, it was still easy to break into basil facets with skis on.

Number of slides
0
Number caught
0
Number buried
0
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Red Flag
Advisory Year

Skiing some dog pow across Hyalite reservoir between 7200-7800’ on a NE pitch I got lots of whumphs and shooting cracks while braking trail. This was a shallower snowpack than most other areas, it was still easy to break into basil facets with skis on.

Northern Gallatin, 2024-02-29

Whumphs in Hyalite

Date
Activity
Skiing

Skiing some dog pow across Hyalite reservoir between 7200-7800’ on a NE pitch I got lots of whumphs and shooting cracks while braking trail. This was a shallower snowpack than most other areas, it was still easy to break into basil facets with skis on.

Region
Northern Gallatin
Location (from list)
Hyalite - main fork
Observer Name
Spencer Jonas

Natural Avalanche off Blackmore Trail

Mt Blackmore
Northern Gallatin
Code
SS-N-R1-D2-O
Aspect
NE
Latitude
45.44770
Longitude
-110.98900
Notes

From IG: This avalanche was from this morning (02/28). It was windy and the gully was likely wind-loaded. One video shows the debris and crown. The pin on the map (below) shows the location of the debris.

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Natural trigger
R size
1
D size
2
Bed Surface
O - Old snow
Problem Type
Wind-Drifted Snow
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Natural Avalanche off Blackmore Trail

Date
Activity
Skiing

From IG: This avalanche was from this morning (02/28). It was windy and the gully was likely wind-loaded. One video shows the debris and crown. The pin on the map (below) shows the location of the debris.

Region
Northern Gallatin
Location (from list)
Mt Blackmore