Trip Planning for Island Park

as of 5:00 am
Today5″ | 25-80 W
Mar 4 0″ | 15-25 NW
Mar 3 7″ | 30-87 W
9885′     03/05 at 07:00
0.5℉
W - 50mph
Gusts 84 mph
8750′     03/05 at 07:44
89.8″ Depth
0.8″New
7710′     03/05 at 07:00
11℉
83″ Depth
Primary Problem: Persistent Weak Layer
Bottom Line: Dangerous avalanche conditions across the advisory area have been the norm since early January, and today is no different. An incoming snowstorm will add weight to a snowpack structure that has proven itself untrustworthy. Avalanches failing 1-2 feet deep within the new and wind-drifted snow are likely, and large enough to bury or injure backcountry travelers. However, very large avalanches breaking 3-4+ feet on persistent weak layers remain the primary concern. Avoidance is critical, and the only way to ensure this is to avoid backcountry terrain steeper than 30 degrees and avalanche runout zones.

Past 5 Days

Fri Mar 1

Considerable
Sat Mar 2

High
Sun Mar 3

Considerable
Mon Mar 4

Considerable
Today

Considerable

Relevant Photos

Displaying 1 - 38
  • 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

  • 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

  • From IG: “Pine creek today, some small wind slabs and a full depth wet slide off black mountain”

  • From IG: “Pine creek today (10/21), some small wind slabs and a full depth wet slide off black mountain”

  • From obs. "Was out alpine climbing today and observed the north face of Blackmore had slid already."

  • Get your tickets and online bid for items HERE!

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

Winter Weather Advisory until March 6, 05:00amClick here for hazard details and duration Winter Weather Advisory
  •  Winter Weather Advisory until March 6, 05:00am

    NOW until
    5:00am Wed

    Winter Weather Advisory

  • Today

    Today: Snow. The snow could be heavy at times.  Widespread blowing snow. High near 21. Wind chill values as low as -15. Windy, with a south southwest wind 23 to 30 mph, with gusts as high as 45 mph.  Chance of precipitation is 90%. Total daytime snow accumulation of 5 to 9 inches possible.

    Heavy Snow
    and Blowing
    Snow

    High: 21 °F

  • Tonight

    Tonight: Snow, mainly before 11pm. The snow could be heavy at times.  Widespread blowing snow, mainly before 8pm. Low around 7. Wind chill values as low as zero. Breezy, with a southwest wind 18 to 23 mph becoming northwest 10 to 15 mph after midnight. Winds could gust as high as 34 mph.  Chance of precipitation is 80%. New snow accumulation of 6 to 10 inches possible.

    Heavy Snow
    and Blowing
    Snow then
    Chance Snow

    Low: 7 °F

  • Wednesday

    Wednesday: A 40 percent chance of snow.  Partly sunny, with a high near 24. Wind chill values as low as -5. North wind 6 to 13 mph becoming south southwest in the afternoon. Winds could gust as high as 18 mph.  New snow accumulation of 2 to 4 inches possible.

    Chance Snow

    High: 24 °F

  • Wednesday
    Night

    Wednesday Night: A 20 percent chance of snow before midnight.  Mostly cloudy, with a low around 10. Wind chill values as low as zero. South southwest wind 6 to 11 mph becoming east northeast after midnight.

    Slight Chance
    Snow then
    Mostly Cloudy

    Low: 10 °F

  • Thursday

    Thursday: A 20 percent chance of snow after noon.  Partly sunny, with a high near 24. Northeast wind 5 to 9 mph becoming west southwest in the afternoon.

    Partly Sunny
    then Slight
    Chance Snow

    High: 24 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 0. West wind 7 to 10 mph becoming north after midnight.

    Partly Cloudy

    Low: 0 °F

  • Friday

    Friday: Sunny, with a high near 26. North wind 8 to 10 mph becoming southwest in the afternoon.

    Sunny

    High: 26 °F

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 4. South southwest wind 8 to 11 mph becoming northeast after midnight.

    Mostly Clear

    Low: 4 °F

The Last Word

On Friday there were two snowmobilers killed in separate avalanches, in Washington and northern Idaho. Our deepest condolences go out to the families, friends, and all involved.

03 / 4 / 24  <<  
 
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