Trip Planning for Lionhead Range

as of 5:00 am
Today4″ | 15-30 SW
Mar 1 3″ | 65-100 W
Feb 29 2″ | 25-37 W
9420′     03/01 at 03:00
20.6℉
W - 64mph
Gusts 111 mph
7750′     03/02 at 21:00
17℉
67″ Depth
Primary Problem: Wind-Drifted Snow
Bottom Line: New snow and wind on a weak snowpack means human triggered avalanches are likely today. Avalanches could break beneath the new and wind drifted snow or on the weak layers deep in the snowpack. Give the new snow time to stabilize and wait to see how the deeper weak layers handle this loading event before getting onto steep slopes.

Past 5 Days

Tue Feb 27

Considerable
Wed Feb 28

Considerable
Thu Feb 29

Considerable
Fri Mar 1

Considerable
Today

Considerable

Relevant Avalanche Activity

Lionhead Range
Lionhead Ridge
Large avalanche in Lionhead_likely burial/caught
Incident details include images
Lionhead Ridge
SS-R3-D2-O
Aspect: E
Coordinates: 44.7145, -111.3180
Caught: 0 ; Buried: 0

From a phone call:

A rider saw a large avalanche in one of the bowls around the corner of Lionhead avalanched. It likely occurred on Friday, March 1. There were holes dug in the snow indicating a buried person or sled. This is the same slope that killed a 19 year old from MN on December 28, 2006. They conducted a beacon search on the debris to make sure no one was buried.


More Avalanche Details
Lionhead Range
Watkins Creek
Snowmobiler partially buried at Lionhead
Watkins Creek
SS-AMu-R2-D2-O
Coordinates: 44.7536, -111.3300
Caught: 0 ; Buried: 0

From a phone call:

A rider was traversing a slope when he triggered and was caught in a slide. He was partially buried under his sled and was uninjured. He estimated the slide to be 150 yards wide and a few feet deep and breaking to the ground.


More Avalanche Details
Lionhead Range
Lionhead Ridge
Several Recent Avalanches at Lionhead
Incident details include images
Lionhead Ridge
SS-N
Aspect: E
Coordinates: 44.7145, -111.3180
Caught: 0 ; Buried: 0

On 02/29/2024: From the parking lot near Hebgin Lake, we were able to see several natural avalanches that happened on Lionhead Ridge. These avalanches all occurred in a similar timeframe to each other. While riding below Lionhead Ridge we observed another avalanche that likely happened a few days prior near 02/27/2024. 

 


More Avalanche Details

Relevant Photos

Displaying 1 - 40
  • From a phone call:

    A rider saw a large avalanche in one of the bowls around the corner of Lionhead avalanched. It likely occurred on Friday, March 1. There were holes dug in the snow indicating a buried person or sled. This is the same slope that killed a 19 year old from MN on December 28, 2006. They conducted a beacon search on the debris to make sure no one was buried.

  • From a phone call:

    A rider saw a large avalanche in one of the bowls around the corner of Lionhead avalanched. It likely occurred on Friday, March 1. There were holes dug in the snow indicating a buried person or sled. This is the same slope that killed a 19 year old from MN on December 28, 2006. They conducted a beacon search on the debris to make sure no one was buried.

  • From a phone call:

    A rider saw a large avalanche in one of the bowls around the corner of Lionhead avalanched. It likely occurred on Friday, March 1. There were holes dug in the snow indicating a buried person or sled. This is the same slope that killed a 19 year old from MN on December 28, 2006. They conducted a beacon search on the debris to make sure no one was buried.

  • From a phone call:

    A rider saw a large avalanche in one of the bowls around the corner of Lionhead avalanched. It likely occurred on Friday, March 1. There were holes dug in the snow indicating a buried person or sled. This is the same slope that killed a 19 year old from MN on December 28, 2006. They conducted a beacon search on the debris to make sure no one was buried.

  • From a phone call:

    A rider saw a large avalanche in one of the bowls around the corner of Lionhead avalanched. It likely occurred on Friday, March 1. There were holes dug in the snow indicating a buried person or sled. This is the same slope that killed a 19 year old from MN on December 28, 2006. They conducted a beacon search on the debris to make sure no one was buried.

  • From a phone call:

    A rider saw a large avalanche in one of the bowls around the corner of Lionhead avalanched. It likely occurred on Friday, March 1. There were holes dug in the snow indicating a buried person or sled. This is the same slope that killed a 19 year old from MN on December 28, 2006. They conducted a beacon search on the debris to make sure no one was buried.

  • While riding below Lionhead Ridge we observed a wind slab avalanche that likely happened a few days ago. This avalanche looked to be 12" deep and broke 100' wide. Photo: GNFAC

     

  • Riders spotted this large avalanche on a west-facing aspect in Targhee Creek in the Lionhead area on Saturday. Photo: K. Stahl

  • From email: "We noticed a multitude of slides on north- and east-facing slopes, many of which seemed to have been from the prior weekend. I snapped a picture of one on the opposite side of the drainage that was a couple of feet deep. Adjacent to it was some more debris." 

  • On 2/16/24 we saw a lot of old and recent avalanches that happened at various times over the last week, and in a wide variety of terrain. On lower elevation, generally non-wind-loaded terrain in the trees we saw at least 4 avalanches that were 1-2' deep and at least 100' wide. Near ridgelines there were many avalanches, harder slabs, at least 1-2' deep breaking hundreds of feet wide. Photo: GNFAC

  • On 2/16/24 we saw a lot of old and recent avalanches that happened at various times over the last week, and in a wide variety of terrain. On lower elevation, generally non-wind-loaded terrain in the trees we saw at least 4 avalanches that were 1-2' deep and at least 100' wide. Near ridgelines there were many avalanches, harder slabs, at least 1-2' deep breaking hundreds of feet wide. Photo: GNFAC

  • We saw a fresh avalanche in Watkins Creek that we think was triggered remotely during the day on 2/16 by a group that was riding in a flat meadow above, where we saw their tracks at least 150 feet away (photo). This slide was 2-3' deep and 100-150' feet wide, breaking on old sugary snow. HS-R3-D2-O. Photo: GNFAC

  • A pit in the flank of an avalanche above Hebgen Lake. The stripe in the picture delineates the new snow over the unstable, old, faceted snow. This interface is where avalanches are occurirng. Karl Birkeland was using his 100 cm long Norwegian Battle Saw...a bit overkill. Photo: GNFAC

  • Crossing onto the debris of a large avalanche that likely released a couple days ago above Hebgen Lake. Photo: GNFAC

  • Skiers saw an entire bowl filled with shooting cracks where weak layers failed but the slope was not steep enough to avalanche. Photo: H Darby

  • An avalanche that failed a couple of days ago at Hebgen Lake. Photo: H. Darby

  • A group of riders triggered this large avalanche on Lionhead Ridge as they traveled in nearby terrain that was much less steep. Photo: T. Urell

  • From obs: "There were shooting cracks everywhere, and it looked like the cracks propagated into a slab that would have broken up more if the slope had been steeper. It almost looked like a crevasse field with how many cracks there were. Photo is included but I don't think shows just how broken up that "relatively benign" terrain was. I have never seen anything like that before! " Photo: H. Darby

  • Two natural avalanches that likely happened in the last 24-48 hours. 500' wide. "Crown line extends basically the entire ridge in the background." Photo. H. Darby

     

  • The crown of a natural avalanche likely happened in the last 12 hours. This avalanche broke 200' wide, 3-4' deep, and ran "almost full path" to the trees below. Photo: H. Darby

     

     

  • Avalanche along Lionhead Ridge that appeared to be several days old. 1/26/24 Photo: GNFAC

  • Avalanche on Lionhead Ridge that appeared to be several days old. 1/26/24 Photo: GNFAC

  • Avalanche in Targhee Creek that appeared to be several days old. 1/26/24 Photo: GNFAC

  • A slide in Watkins Creek broke across three avalanche paths/gully features and was one of the larger slides we've seen this season, looking to have piled up debris 10+ ft deep. Looks to have broken in the last 24 hours. 1/26/24 Photo: GNFAC

  • A slide in Watkins Creek broke across three avalanche paths/gully features and was one of the larger slides we've seen this season, looking to have piled up debris 10+ ft deep. Looks to have broken in the last 24 hours. 1/26/24 Photo: GNFAC

  • Avalanche that looks to have been remotely triggered at Lionhead in the last 24 hours. 1/26/24 Photo: GNFAC

  • Avalanche that looks to have been remotely triggered at Lionhead in the last 24 hours. 1/26/24 Photo: GNFAC

  • 1/26/24 Photo: GNFAC

  • 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.

  • Riders on Lionhead Ridge spotted this natural avalanche that occurred on January 21. 

  • This natural avalanche failed the morning of January 21 on a steep slope at Lionhead. 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

  • 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

  • From facebook message: "Multiple remote triggers across this slope."

    Up Targhee Creek, near Lionhead Ridge. 1/18/24 Photo: R. Schlueter. 

  • From facebook message: "Multiple remote triggers across this slope."

    Up Targhee Creek, near Lionhead Ridge. 1/18/24 Photo: R. Schlueter. 

  • From facebook message: "Multiple remote triggers across this slope."

    Up Targhee Creek, near Lionhead Ridge. 1/18/24 Photo: R. Schlueter. 

  • This avalanche likely occurred in the last couple days. It was on a NE facing slope and is indicative of a weak and unstable snowpack. Photo: GNFAC

  • An avalanche on Ski Hill likely ran during the avalanche Warning last week (1/10/24). Photo GNFAC

  • Riders in Lionhead triggered a small avalanche 20' away while "cutting down a hill". Photo: J. Anderson

Videos- Lionhead Range

WebCams


Rendezvous Ski Trail, W. Yellowstone

Snowpit Profiles- Lionhead Range

 

Select a snowpit on the map to view the profile image

Weather Forecast Lionhead Range

Extended Forecast for

10 Miles WNW West Yellowstone MT

Winter Storm Warning until March 3, 04:00amClick here for hazard details and duration Winter Storm Warning
  •  Winter Storm Warning until March 3, 04:00am

    NOW until
    4:00am Sun

    Winter Storm Warning

  • Tonight

    Tonight: Snow likely, mainly before midnight.  Widespread blowing snow, mainly before 1am. Mostly cloudy, with a low around 3. Wind chill values as low as -15. Windy, with a southwest wind 29 to 34 mph decreasing to 18 to 23 mph after midnight. Winds could gust as high as 38 mph.  Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.

    Snow Likely
    and Blowing
    Snow

    Low: 3 °F

  • Sunday

    Sunday: A slight chance of snow before 9am, then a chance of snow showers after 1pm.  Partly sunny, with a high near 12. Wind chill values as low as -15. Southwest wind 13 to 18 mph, with gusts as high as 21 mph.  Chance of precipitation is 40%. Little or no snow accumulation expected.

    Chance Snow
    Showers

    High: 12 °F

  • Sunday
    Night

    Sunday Night: Snow showers likely, mainly before midnight.  Mostly cloudy, with a low around 2. Wind chill values as low as -15. Southwest wind 13 to 18 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Snow Showers
    Likely

    Low: 2 °F

  • Monday

    Monday: Snow showers, mainly after noon.  High near 11. Wind chill values as low as -15. Breezy, with a southwest wind 15 to 23 mph, with gusts as high as 26 mph.  Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Chance Snow
    Showers then
    Snow Showers
    and Breezy

    High: 11 °F

  • Monday
    Night

    Monday Night: Snow showers likely, mainly after midnight.  Mostly cloudy, with a low around 7. Breezy, with a south wind 16 to 24 mph, with gusts as high as 28 mph.  Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Snow Showers
    Likely and
    Breezy

    Low: 7 °F

  • Tuesday

    Tuesday: Snow showers.  High near 18. Windy, with a south wind 21 to 30 mph, with gusts as high as 34 mph.  Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    Snow Showers
    and Windy

    High: 18 °F

  • Tuesday
    Night

    Tuesday Night: Snow showers.  Low around 9. Breezy, with a southwest wind 20 to 25 mph decreasing to 14 to 19 mph after midnight. Winds could gust as high as 31 mph.  Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.

    Snow Showers
    and Breezy

    Low: 9 °F

  • Wednesday

    Wednesday: Snow showers likely, mainly after noon.  Mostly cloudy, with a high near 16. West southwest wind 11 to 15 mph, with gusts as high as 22 mph.

    Snow Showers
    Likely

    High: 16 °F

The Last Word

Clear weather and temperature fluctuations can make a weak layer in the top few cm of the snowpack called near-surface faceting. There are 3 dominant types which are explained in Bruce Jamieson’s new video featuring Karl Birkeland, Doug Chabot, Ed Adams, Mike Cooperstein, Ethan Greene and Mark Staples.

03 / 1 / 24  <<  
 
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