Trip Planning for Island Park

as of 5:00 am
Today0″ | 25-40 W
Apr 11 0″ | 10-55 W
Apr 10 0″ | 15-55 NW
9885′     04/12 at 17:00
34.5℉
W - 14mph
Gusts 32 mph
8750′     04/12 at 17:34
87.7″ Depth
0.0″New
7710′     04/12 at 16:00
51℉
69″ Depth
Primary Problem: Wet Snow
Bottom Line: By mid-morning, on sunny slopes, any surface crusts that formed overnight will be breaking down and wet avalanche danger will be rising. Mostly we’re expecting relatively small wet loose slides, but the whole array of wet snow avalanche concerns are possible today, including wet loose slides entraining the whole season’s snowpack, wet slabs, or cornice collapses. Plan to get off sunny slopes early. Triggering avalanches in dry snow is becoming less likely, but is still possible, particularly on wind-loaded, high elevation, shady slopes.

Past 5 Days

Mon Apr 8

Moderate
Tue Apr 9

Moderate
Wed Apr 10

Considerable
Thu Apr 11

Considerable
Today

Considerable

Relevant Avalanche Activity

Island Park
Arange Peak
Wet avalanches in Island Park
Incident details include images
Arange Peak
WL-N
Coordinates: 44.5263, -111.4650
Caught: 0 ; Buried: 0

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."


More Avalanche Details
Island Park
CENTENNIAL RANGE
Recent instability in the new and wind drifted snow
Incident details include images
Incident details contain video
CENTENNIAL RANGE
SS-N-R2-D2-I
Coordinates: 44.5489, -111.7310
Caught: 0 ; Buried: 0

Two rider-triggered avalanches near Reas Peak on north aspects that broke within or just below the new storm snow (D1s)

Natural avalanche broke near Yale Creek on a southern aspect that broke below new snow (D1)

Two natural avalanches that broke within the wind drifted snow in Jefferson Bowl (D2s)


More Avalanche Details

Relevant Photos

Displaying 1 - 40
  • 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

  • Fugawee Snowmobile Club Assembling New Beacon Checkers. Photo: Kent

  • Went to do maintenance on the Sawtelle Snowfall weather station at 8800 ft just off the Sawtelle Mountain Road. Continuous snowcover starts around 8000 ft. At 8800 ft there is ~20" of snow with a mix of hard crusts and weak facets. These weak layers near the ground will be something to watch once snows again. Photo: GNFAC

  • Went to do maintenance on the Sawtelle Snowfall weather station at 8800 ft just off the Sawtelle Mountain Road. Continuous snowcover starts around 8000 ft. At 8800 ft there is ~20" of snow with a mix of hard crusts and weak facets. These weak layers near the ground will be something to watch once snows again. Photo: 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

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 8pm.  Partly cloudy, with a low around 33. South wind 7 to 13 mph becoming west in the evening. Winds could gust as high as 18 mph.

    Chance
    Showers then
    Partly Cloudy

    Low: 33 °F

  • Saturday

    Saturday: Sunny, with a high near 52. South southwest wind 9 to 15 mph, with gusts as high as 23 mph.

    Sunny

    High: 52 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 32. South southwest wind 7 to 15 mph becoming east southeast after midnight. Winds could gust as high as 22 mph.

    Mostly Clear

    Low: 32 °F

  • Sunday

    Sunday: A 20 percent chance of showers after noon.  Sunny, with a high near 49. East southeast wind 6 to 11 mph becoming south southwest 13 to 18 mph in the afternoon. Winds could gust as high as 29 mph.

    Sunny then
    Slight Chance
    Showers

    High: 49 °F

  • Sunday
    Night

    Sunday Night: A slight chance of rain and snow showers before 9pm, then a slight chance of snow showers.  Partly cloudy, with a low around 28. Southwest wind 15 to 20 mph becoming northwest 6 to 11 mph after midnight. Winds could gust as high as 30 mph.  Chance of precipitation is 20%.

    Slight Chance
    Rain/Snow
    then Slight
    Chance Snow
    Showers

    Low: 28 °F

  • Monday

    Monday: A 40 percent chance of showers after noon.  Mostly sunny, with a high near 47. West northwest wind 7 to 14 mph, with gusts as high as 21 mph.

    Mostly Sunny
    then Chance
    Showers

    High: 47 °F

  • Monday
    Night

    Monday Night: A chance of rain before 9pm, then a chance of rain and snow between 9pm and 3am, then a chance of snow after 3am.  Mostly cloudy, with a low around 27. West wind 11 to 16 mph, with gusts as high as 24 mph.  Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    Chance
    Rain/Snow

    Low: 27 °F

  • Tuesday

    Tuesday: Snow likely, mainly after noon.  Mostly cloudy, with a high near 36. South southwest wind 11 to 18 mph, with gusts as high as 28 mph.

    Snow Likely

    High: 36 °F

  • Tuesday
    Night

    Tuesday Night: Snow likely.  Mostly cloudy, with a low around 18.

    Snow Likely

    Low: 18 °F

The Last Word

On Tuesday, April 9th, Doug Chabot wrote his final avalanche forecast for the Gallatin National Forest Avalanche Center. Doug, thank you for your friendship, mentorship and 29 years of service to Southwest Montana’s community. Congratulations on your fast approaching retirement!

04 / 11 / 24  <<  
 
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