Northern Gallatin

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
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    • 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
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    • 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
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    • 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

    New snow avalanches at Portal Crk

    Portal Creek
    Northern Gallatin
    Code
    SS-N-R2-D2-S
    Latitude
    45.28900
    Longitude
    -111.14100
    Notes

    Saw a couple small natural slides breaking in the new snow. The one on the small slope beside the road actually appeared to have broken when a snow bike crossed the top just off the side of the road. The other was natural and occurred in the afternoon sometime 

    Number of slides
    2
    Number caught
    0
    Number buried
    0
    Avalanche Type
    Soft slab avalanche
    Trigger
    Natural trigger
    R size
    2
    D size
    2
    Bed Surface
    S - Avalanche released within new snow
    Problem Type
    New Snow
    Slab Thickness
    8.0 inches
    Vertical Fall
    350ft
    Slab Width
    200.00ft
    Images
    New snow avalanche at Portal, 3/26 2
    New snow avalanches at Portal on 3/26
    Snow Observation Source
    Surface snow breaking at Portal today
    Slab Thickness units
    inches
    Single / Multiple / Red Flag
    Multiple Avalanches
    Advisory Year
    22-23

    From obs 3/26/23: "Saw a couple small natural slides breaking in the new snow.... occurred in the afternoon sometime" Photo: J. Weingarten

    Avalanche Details: New snow avalanches at Portal Crk
    Forecast link: GNFAC Avalanche Forecast for Mon Mar 27, 2023GNFAC Avalanche Forecast for Tue Mar 28, 2023GNFAC Avalanche Forecast for Wed Mar 29, 2023
    Northern Gallatin, 2023-03-27
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