Northern Gallatin

Snowmobile triggered wind slab

Date
Activity
Snowmobiling

Small wind slab triggered by snowmobile. Slope was assessed by group as wind blown before climb.  No one was caught. East facing slope, Storm castle Ridge.   
Photo one shows trigger point where the Snowmobiler carved hard and set off the slab deeper in the snowpack
 

 

Region
Northern Gallatin
Location (from list)
Storm Castle
Observer Name
Ryli Schlueter

Remotely trigged small slide in Portal Creek

Portal Creek
Northern Gallatin
Code
AMr-R1-D1
Latitude
45.28900
Longitude
-111.14100
Notes

We were snowmobiling up portal creek today near the hidden lakes trailhead and I set off a small slide remotely by riding below a small ridge. The slide was about 3 feet at its crown 30 or 40 feet wide and ran about 40 yards. It just came down to where my track had crossed underneath. Everything was fine and we stayed safe and continued on with our plan and had a nice day.

Number of slides
1
Number caught
0
Number buried
0
Trigger
Snowmobile
Trigger Modifier
r-A remote avalanche released by the indicated trigger
R size
1
D size
1
Images
Portal Creek small slide 3
Portal Creek small slide 2
Portal Creek small slide 1
Snow Observation Source
Portal Creek small slide
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
22-23

We were snowmobiling up portal creek today near the hidden lakes trailhead and I set off a small slide remotely by riding below a small ridge. The slide was about 3 feet at its crown 30 or 40 feet wide and ran about 40 yards. It just came down to where my track had crossed underneath. Everything was fine and we stayed safe and continued on with our plan and had a nice day.

Avalanche Details: Remotely trigged small slide in Portal Creek
Forecast link: GNFAC Avalanche Forecast for Sun Apr 2, 2023
Northern Gallatin, 2023-04-01
Access other image sizes:
  • Very Large 1200px
  • Large 480px
  • Medium 220px
  • Small 150px
  • Original

    • We were snowmobiling up portal creek today near the hidden lakes trailhead and I set off a small slide remotely by riding below a small ridge. The slide was about 3 feet at its crown 30 or 40 feet wide and ran about 40 yards. It just came down to where my track had crossed underneath. Everything was fine and we stayed safe and continued on with our plan and had a nice day.

    Avalanche Details: Remotely trigged small slide in Portal Creek
    Forecast link: GNFAC Avalanche Forecast for Sat Apr 1, 2023
    Northern Gallatin, 2023-04-01
    Access other image sizes:
  • Very Large 1200px
  • Large 480px
  • Medium 220px
  • Small 150px
  • Original

    • We were snowmobiling up portal creek today near the hidden lakes trailhead and I set off a small slide remotely by riding below a small ridge. The slide was about 3 feet at its crown 30 or 40 feet wide and ran about 40 yards. It just came down to where my track had crossed underneath. Everything was fine and we stayed safe and continued on with our plan and had a nice day. 

    Avalanche Details: Remotely trigged small slide in Portal Creek
    Forecast link: GNFAC Avalanche Forecast for Sat Apr 1, 2023
    Northern Gallatin, 2023-04-01
    Access other image sizes:
  • Very Large 1200px
  • Large 480px
  • Medium 220px
  • Small 150px
  • Original

    • Portal Creek small slide

    Date
    Activity
    Snowmobiling

    We were snowmobiling up portal creek today near the hidden lakes trailhead and I set off a small slide remotely by riding below a small ridge. The slide was about 3 feet at its crown 30 or 40 feet wide and ran about 40 yards. It just came down to where my track had crossed underneath. Everything was fine and we stayed safe and continued on with our plan and had a nice day.

    Region
    Northern Gallatin
    Location (from list)
    Portal Creek

    Natural avalanches in Hyalite

    Hyalite - main fork
    Northern Gallatin
    Code
    SS-N-R2-D1.5
    Latitude
    45.44720
    Longitude
    -110.96200
    Notes

    On my walk up to divide today 3/28 I noticed a few small storm slabs that broke on the west side of the main fork of hyalite off the summer trail.  This area had similar storm slabs that broke back in mid February during a large storm 

    up in the alpine there were no avalanches to report 

    Number of slides
    3
    Number caught
    0
    Number buried
    0
    Avalanche Type
    Soft slab avalanche
    Trigger
    Natural trigger
    R size
    2
    D size
    1.5
    Problem Type
    New Snow
    Snow Observation Source
    Natural avalanches in Hyalite
    Slab Thickness units
    centimeters
    Single / Multiple / Red Flag
    Multiple Avalanches
    Advisory Year
    22-23

    Natural avalanches in Hyalite

    Date
    Activity
    Snowboarding

    On my walk up to divide today 3/28 I noticed a few small storm slabs that broke on the west side of the main fork of hyalite off the summer trail.  This area had similar storm slabs that broke back in mid February during a large storm 

    up in the alpine there were no avalanches to report 

    Region
    Northern Gallatin
    Location (from list)
    Hyalite - main fork
    Subscribe to Northern Gallatin