Trip Planning for Island Park

as of 5:00 am
Today1″ | NA
Dec 23 0″ | NA
Dec 22 0″ | NA
9885′     12/24 at 10:00
17.9℉
W - 0mph
Gusts 0 mph
8750′     12/24 at 11:24
36.8″ Depth
0.0″New
7710′     12/24 at 11:00
31℉
27″ Depth
Primary Problem: Persistent Slab
Bottom Line: Heightened avalanche conditions exist. Human-triggered persistent slab and wind slab avalanches are possible. Obvious signs of instability, such as avalanches, collapsing, and shooting cracks, won’t be forthcoming today, but these, and unstable test results and poor snowpack structure, direct us toward slopes less than 30 degrees steep. Along with safe travel practices, good partners and rescue gear, selecting lower-angle avalanche terrain sheltered from the wind with fewer terrain traps reduces the likelihood and consequences of a slide.

Past 5 Days

Fri Dec 20

Considerable
Sat Dec 21

Moderate
Sun Dec 22

Moderate
Mon Dec 23

Moderate
Today

Moderate

Relevant Avalanche Activity

Island Park
Rock Creek Basin
Widespread weak layer Island Park
Incident details include images
Rock Creek Basin
SS-NC-R2-D1-O
Elevation: 9,200
Aspect: NE
Coordinates: 44.5657, -111.4810
Caught: 0 ; Buried: 0
More Avalanche Details
Island Park
Two Top
Windslab above surface hoar near W. Yellowstone/IP
Incident details include images
Two Top
SS-AMu-R2-D1-O
Coordinates: 44.6104, -111.3030
Caught: 0 ; Buried: 0

Small windslab triggered on approach for inspection. Failure interface had 5 mm Surface Hoar. Soft slab, remote propagation onto the adjacent slope. Debris covered about half of the road bed.


More Avalanche Details

Relevant Photos

Displaying 1 - 27
  • Plumes of drifting snow in the Bridger Range as strong winds blasted the mountains. Photo: GNFAC

  • De-rimed Sawtell anemometer

  • Rock Creek natural avalanche

  • NE facing IP snowpit

  • E facing IP snowpit 

  • From IG: On 12/15 "Storm slab broke about 200’ above us as skinning up the hallway coming from the north side on the throne." Photo: Anonymous

  • Small windslab triggered on approach for inspection. Failure interface had 5 mm Surface Hoar. Soft slab, remote propagation onto the adjacent slope. Debris covered about half of the road bed.

    Photo: J Hambelton 

  • Small windslab triggered on approach for inspection. Failure interface had 5 mm Surface Hoar. Soft slab, remote propagation onto the adjacent slope. Debris covered about half of the road bed.

    Photo: J Hambelton

  • Small windslab triggered on approach for inspection. Failure interface had 5 mm Surface Hoar. Soft slab, remote propagation onto the adjacent slope. Debris covered about half of the road bed.

    Photo: J Hambelton

  • Gusty winds transporting snow in Taylor Fork on Saturday. Triggered a 4-5 inch deep wind slab that propagated about 50 ft at the top of a north east facing slope at 9,500 ft.

    Photo: JP

  • We are grateful for our partnership with the Friends of the Gallatin National Forest Avalanche Center. It is always a good time to get out in the field with our education coordinator, Shannon. Photo: GNFAC

  • The snow depth was 60-70 cm (2-2.5 feet) at the upper elevations of the Big Springs Loop around the Black Canyon area in Island Park. Photo: GNFAC

  • Surface hoar and near surface facets are now capped by this weekend's snow. The layers are buried 2-4" deep in the Black Canyon area of Island Park. Photo: GNFAC

  • WE facing snow at 8100 ft Cabin Ck

  • Cabin Creek snow cover

  • SE facing snow Cabin Creek

  • N facing snow Cabin Creek, 9000 ft

  • Big Sky Ski Patrol triggered this avalanche during mitigation work in The Wave on 11/26/24... "2-3' deep on an ice crust just above the ground with a 2# shot in the Upper rodeo. Volume was limited as most of the snow was loaded just underneath the cornice, but still produced a sizeable size 2... Other paths in the Lenin region ran meaty wind slabs, full track with no significant step downs." Photo: BSSP

  • Cracking on old, faceted, October snow hundreds of feet long. North facing near treeline. Photo: BSSP

  • Intentional, human-triggered avalanche by a ski patrol breaking at the ground on a north facing slope near treeline. Photo: BSSP

  • Sawtelle snowpack. Photo: GNFAC

     

  • Snowpit at Bridger Bowl on 11/5. Photo: B. VandenBos

  • From e-mail: "Photo attached from near top of hyalite peak, 11/2. Cracking in recent hard wind slab, I had to really jump hard to make this. Walked on many other hard slabs that were well bonded. Highly variable snowpack. I think you'd be most likely to get into trouble by popping out a small hard slab pocket like this and getting magic carpeted into some thinly covered terrain." Photo: B. VandenBos

  • From obs: "1-3 mm faceting in front of the Montage. Clear skys and mid 20 temps"

  • On October 17, rain turned to snow and blanketed the mountains of southwest Montana with a fresh coat of snow. Photo: Yellowstone Club Webcam

  • On October 17, rain turned to snow and blanketed the mountains of southwest Montana with a fresh coat of snow. Photo: Bridger Bowl Webcams

  • The 26th annual fundraiser for the Friends of the GNFAC is October 25 at the Emerson Cultural Center. More info and tickets at: https://events.eventgroove.com/event/Powder-Blast-2024-101627

Snowpit Profiles- Island Park

 

Select a snowpit on the map to view the profile image

Weather Forecast Island Park

Extended Forecast for

10 Miles ESE Lakeview MT

  • Today

    Today: Mostly cloudy, with a high near 30. South wind around 11 mph.

    High: 30 °F

    Mostly Cloudy

  • Tonight

    Tonight: Snow, mainly after 11pm.  Low around 23. South wind 7 to 9 mph becoming east northeast after midnight.  Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 23 °F

    Snow

  • Christmas Day

    Christmas Day: Snow likely, mainly before 9am.  Partly sunny, with a high near 28. North northwest wind around 9 mph becoming southwest in the afternoon.  Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    High: 28 °F

    Snow Likely
    then Chance
    Snow

  • Wednesday Night

    Wednesday Night: Snow likely.  Mostly cloudy, with a low around 18. South wind 11 to 20 mph, with gusts as high as 29 mph.  Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    Low: 18 °F

    Snow Likely

  • Thursday

    Thursday: Snow. The snow could be heavy at times.  High near 22. South wind 16 to 20 mph, with gusts as high as 29 mph.  Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    High: 22 °F

    Heavy Snow

  • Thursday Night

    Thursday Night: Snow.  Low around 20. South southwest wind 11 to 15 mph, with gusts as high as 21 mph.  Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 20 °F

    Snow

  • Friday

    Friday: Snow. The snow could be heavy at times.  High near 24. South wind 16 to 20 mph, with gusts as high as 28 mph.  Chance of precipitation is 90%. New snow accumulation of 4 to 8 inches possible.

    High: 24 °F

    Heavy Snow

  • Friday Night

    Friday Night: Snow.  Cloudy, with a low around 21. South southwest wind 16 to 18 mph, with gusts as high as 28 mph.

    Low: 21 °F

    Snow

  • Saturday

    Saturday: Snow.  Mostly cloudy, with a high near 26.

    High: 26 °F

    Snow

The Last Word

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