Trip Planning for Island Park

as of 5:00 am
May 11″ | NA
Apr 30 1″ | NA
Apr 29 1″ | NA
9885′     04/23 at 10:00
32.2℉
S - 10mph
Gusts 44 mph
8750′     06/13 at 04:44
29.4″ Depth
0.6″New
7710′     06/13 at 03:00
51℉
0″ Depth
Bottom Line: Spring weather can be highly variable and create a mix of avalanche problems to watch out for. Snow conditions and snow stability can change drastically from day to day or hour to hour. Anticipate rapid change and plan accordingly. Plenty of snowfall over the winter with more spring snow to come makes avalanches possible into summer.

Past 5 Days

Fri Apr 19

None
Mon Apr 22

None
Fri Apr 26

None
Mon Apr 29

None
Thu May 2

None

Relevant Photos

Displaying 1 - 40
  • From obs 5/23/24: "shooting cracks in the top 4 to 5 inches of new snow in middle basin" Photo: N. Greiner

  • From obs 5/23/24: "Toured to the top of PK during today’s storm. Snow was very wet and heavy. We saw no other slides or signs of instability on the way up. Coming down skiers right of flippers, all 3 of us caused small slides and cracking within the new snow. I triggered the largest slide, which was 6-8” deep and 12’ wide." Photo: T. Jordan

  • On 5/4/24 Skiers triggered large wet loose slides on the Fin near Cooke City

  • From IG mesasge (4/6): "Some wet action at arange peak near Sawtell yesterday. From slope Dave and I did our first pit on Monday. Lots of release in that new old interface but didn’t see anything releasing down deeper." Photo: Z. Bailey

  • From email:" photo of mostly cloudy skies. 53 deg F while driving through IP at around 4pm" Photo: M. Staples

  • We saw a small natural avalanche below Reas Peak on a northerly aspect. Photo: GNFAC

  • We saw two avalanches below Reas Peak on North aspects that were likely triggered by snowmobilers. Photo: GNFAC

  • We saw two recent natural avalanches that broke below the wind-drifted snow in Jefferson Bowl. Photo: GNFAC

  • We saw two recent natural avalanches that broke below the wind-drifted snow in Jefferson Bowl. Photo: GNFAC

  • We saw a natural avalanche that broke near Yale Creek on a southern aspect that broke below the recent snow. Photo: GNFAC

  • From obs: "No details, came upon them while riding and making observations of the terrain. One was North-Northeast, the other was North-Northwest facing. Across the drainage from each other. Also, notice three other small avalanches on a west facing slope, about two miles east of the first two. All five were on slopes well over 30. In the centennial mountains, close to the continental on the Idaho/Montana border."

  • From obs: "No details, came upon them while riding and making observations of the terrain. One was North-Northeast, the other was North-Northwest facing. Across the drainage from each other. Also, notice three other small avalanches on a west facing slope, about two miles east of the first two. All five were on slopes well over 30. In the centennial mountains, close to the continental on the Idaho/Montana border."

  • Riders snapped a photo of natural avalanche activity above Blue Creek in the Centennial Mountains. Photo: P Rockwell

  • A small avalanche that was triggered by riders on 02/08/2024. Photo: GNFAC

  • This avalanche was triggered by riders a few days ago. This was a small slope and broke 100' wide and 2-3' deep. Photo: GNFAC 

  • Snowmobilers in Hell Roaring Creek saw a few natural avalanches that happened in the last week. The exact date is unknown.  Photo: B. Schleicher

  • Snowmobilers in Hell Roaring Creek saw a few natural avalanches that happened in the last week. The exact date is unknown.  Photo: B. Schleicher

  • Snowmobilers in Hell Roaring Creek saw a few natural avalanches that happened in the last week. The exact date is unknown.  Photo: B. Schleicher

  • This on one of over 15 avalanches snowmobilers saw today, 01/30/2024. These avalanches likely happened on 01/29 or the morning of 01/30. Photo. N.

  • This on one of over 15 avalanches snowmobilers saw today, 01/30/2024. These avalanches likely happened on 01/29 or the morning of 01/30. Photo. N.

     

  • Do you like to hike? Do you like to ski? Then the King & Queen of the Ridge is for you. Hike, ski and raise money for the Friends of the Avalanche Center in their 2nd biggest fundraiser of the year. Join the effort to promote and support avalanche safety and awareness! Fundraising prizes for top 5 individuals who raise over $500. No racing is necessary to compete for the fundraising prizes. Info to fundraise is HERE or donate here. Race participants for the [insert dates] event must register separately with Bridger Bowl here.

  • A rider triggered this avalanche while side-hilling across the bottom of the slope. The rider was able to quickly turn downhill and avoid the slide. No one was caught. Photo: Anonymous

  • A rider triggered this avalanche while side-hilling across the bottom of the slope. The rider was able to quickly turn downhill and avoid the slide. No one was caught. Photo: Anonymous

  • On Sawtelle Peak, Island Park, when the clouds lifted we could see a crown of a snowmobiler triggered slide that occurred yesterday. It broke on the buried surface hoar and facets about 1.5 feet under the surface. Recent snow and wind-loading has created dangerous avalanche conditions. Photo: GNFAC

  • On Sawtelle Peak, Island Park, when the clouds lifted we could see a crown of a snowmobiler triggered slide that occurred yesterday. It broke on the buried surface hoar and facets about 1.5 feet under the surface. Recent snow and wind-loading has created dangerous avalanche conditions. Photo: GNFAC

  • On Sawtelle Peak, Island Park, when the clouds lifted we could see a crown of a snowmobiler triggered slide that occurred yesterday. It broke on the buried surface hoar and facets about 1.5 feet under the surface. Recent snow and wind-loading has created dangerous avalanche conditions. Photo: GNFAC

  • Snowpit at the Head of Hellroaring Creek on 1/7/24. Note the two stripes of surface hoar in the pit wall.

  • We measured 16" of low-density snow equaling 0.7" of snow water equivalent at higher elevations in the Centennial Mountains of Island Park, ID. The new snow is sitting on a couple of layers of feathery surface hoar and a weak snowpack. It will not take much wind, settlement, or new snow to push the snowpack to the breaking point. Photo: GNFAC

  • New snow in Island Park made for beautiful views and heightened avalanche danger as the new snow fell on a snowpack riddled with weak layers. Photo: GNFAC

  • Doug Chabot walking off Lionhead Ridge to a snowpit site.

  • We snowmobiled up to 9,000' on Sawtelle peak, then skied to dig a couple pits. Our first pit was on an East aspect on a heavily wind loaded slope. The HS was 130cm (or 4.2 feet). There was 8" of new snow equal to 0.85" SWE, sitting over old consolidated snow that made up a slab over soft, weak facets about 50cm off the ground. We had ECTP24 x2 break on the old weak snow.... Photo: GNFAC

  • We snowmobiled up to 9,000' on Sawtelle peak on 12/23/23. The snow depth at 8,800' was 3-4 feet. Photo: GNFAC

  • Riders saw large surface hoar crystals while riding outside of Island Park. Photo. B.Schleicher

     

  • From IG on 12/10: "2 slides we triggered remotely in tepee yesterday"

  • From facebook message: "North facing slope 15 miles south of west Yellowstone probably 30ish degree slope. Probably 16-18 inch slab". Photo: T. Taubman

  • We met up with the Fugawee Snowmobile Club, Idaho Parks and Recreation, and Klim to install new beacon checkers at the trailhead in Island Park. Great work to the team! Photos: GNFAC

  • We met up with the Fugawee Snowmobile Club, Idaho Parks and Recreation, and Klim to install new beacon checkers at the trailhead in Island Park. Great work to the team! Photos: GNFAC

  • We met up with the Fugawee Snowmobile Club, Idaho Parks and Recreation, and Klim to install new beacon checkers at the trailhead in Island Park. Great work to the team! Photos: GNFAC

  • We met up with the Fugawee Snowmobile Club, Idaho Parks and Recreation, and Klim to install new beacon checkers at the trailhead in Island Park. Great work to the team! Photos: GNFAC

  • We met up with the Fugawee Snowmobile Club, Idaho Parks and Recreation, and Klim to install new beacon checkers at the trailhead in Island Park. Great work to the team! Photos: GNFAC

Videos- Island Park

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: Sunny, with a high near 72. North northeast wind 7 to 14 mph becoming south southwest in the morning. Winds could gust as high as 24 mph.

    High: 72 °F

    Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 4am.  Partly cloudy, with a low around 51. South southeast wind 7 to 13 mph, with gusts as high as 23 mph.

    Low: 51 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Friday

    Friday: A slight chance of showers before 9am, then a chance of showers and thunderstorms after noon.  Partly sunny, with a high near 72. South southwest wind 7 to 17 mph, with gusts as high as 30 mph.  Chance of precipitation is 50%.

    High: 72 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 47. Southwest wind 7 to 16 mph becoming northeast after midnight. Winds could gust as high as 29 mph.

    Low: 47 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 63. Windy, with an east northeast wind 7 to 12 mph becoming south southwest 21 to 31 mph in the morning. Winds could gust as high as 50 mph.

    High: 63 °F

    Mostly Sunny
    then Partly
    Sunny and
    Windy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 34. Breezy, with a southwest wind 24 to 29 mph becoming west northwest 10 to 15 mph in the evening. Winds could gust as high as 45 mph.

    Low: 34 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 55. South southwest wind 8 to 16 mph, with gusts as high as 29 mph.

    High: 55 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers, mainly after midnight.  Mostly cloudy, with a low around 37. South southwest wind 10 to 15 mph becoming northeast after midnight. Winds could gust as high as 26 mph.

    Low: 37 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers.  Mostly cloudy, with a high near 50.

    High: 50 °F

    Chance
    Showers

The Last Word

We began daily forecasts on December 7. 130 daily forecasts and 464 reported avalanches later, we wrapped up our daily forecasting season on April 14th. Read our SEASON SUMMARY to look back at the 2023-24 avalanche forecasting season.

Thank you to everyone that sent in observations, read the advisories, took an avalanche class, or donated money, time or gear. Our success is directly related to support from the community and the Forest Service. Have a safe spring and summer!

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