Trip Planning for Southern Madison

as of 5:00 am
Apr 190″ | NA
Apr 18 4″ | NA
Apr 17 6″ | NA
9460′     03/26 at 10:00
16.2℉
NW - 10mph
Gusts 19 mph
9000′     04/20 at 14:00
43℉
65″ Depth
Primary Problem: Wet Snow
Bottom Line: Avalanche concerns through this weekend will chiefly be driven by the new snow that fell this week, in combination with warm temperatures and sunshine. Avalanches could break in the recent snow, particularly on shady, high elevation slopes. On sunny slopes, the new snow provides the needed ammunition for big wet loose sluffs. Recent slides also remind us that it’s still possible for avalanches to break deeper.

Past 5 Days

Fri Apr 12

Considerable
Sat Apr 13

Considerable
Sun Apr 14

Considerable
Mon Apr 15

None
Fri Apr 19

None

Relevant Avalanche Activity

Southern Madison
Quake Lake
Wet Slab Avalanche Above Quake Lake
Incident details include images
Quake Lake
WS-N-R2-D2-G
Coordinates: 44.8524, -111.3920
Caught: 0 ; Buried: 0

From IG: Wet slide to the ground above Quake Lake. 


More Avalanche Details
Southern Madison
Sphinx Mountain
Cornice Collapse on the Sphinx
Incident details include images
Sphinx Mountain
C-ASu
Coordinates: 45.1582, -111.4770
Caught: 0 ; Buried: 0

From obs: " Unintentionally triggered a large cornice collapse on the south face of the Sphinx. " 


More Avalanche Details

Relevant Photos

Displaying 1 - 40
  • Wet slide to the ground above Quake Lake. Photo: K Kramer

  • Skiers unintentionally triggered this cornice above the south face of the Sphinx. No one was caught. Photo: Anonymous

  • There was a full-depth wet slab avalanche that broke last week during the warm-up on Lightning Ridge. GNFAC

     

  • We saw one new wind-slab avalanche in Sunlight Basin. It was small. From a distance, it appeared to be about 6" deep and 30' across (R1-D1). GNFAC

  • Spring cornices are growing very large above many wind-loaded slopes. GNFAC

  • We rode from Taylor Fork through Cabin Creek on March 17. We saw a few recent slab avalanches that happened after the last snowfall, and some recent natural wet loose avalanches, and a cornice fall. Photo: GNFAC

  • We rode from Taylor Fork through Cabin Creek on March 17. We saw a few recent slab avalanches that happened after the last snowfall, and some recent natural wet loose avalanches, and a cornice fall. Photo: GNFAC

  • We rode from Taylor Fork through Cabin Creek on March 17. We saw a few recent slab avalanches that happened after the last snowfall, and some recent natural wet loose avalanches, and a cornice fall. Photo: GNFAC

  • We rode from Taylor Fork through Cabin Creek on March 17. We saw a few recent slab avalanches that happened after the last snowfall, and some recent natural wet loose avalanches, and a cornice fall. Photo: GNFAC

  • A natural or human-triggered avalanche near the skin track at Bacon Rind. Photo: GNFAC

  • A natural or human-triggered avalanche near the skin track at Bacon Rind. Photo: GNFAC

  • Deep shooting cracks near an avalanche at Bacon Rind. Photo: GNFAC

  • We rode into Tepee Basin and saw two recent avalanches on 3/2/24. This one looked like it maybe happened yesterday, on a heavily wind-loaded slope below some cornices, 2-2.5' deep and 250-300' wide. Photo: GNFAC

  • We rode into Tepee Basin and saw two recent avalanches on 3/2/24. One looked like it happened this morning on a treed ridgeline, 1-1.5' deep 150-200' wide. Photo: GNFAC

  • Skiers on 03/02/2024 saw a natural avalanche on an east-facing slope and broke 3-4' deep and 100' wide. This avalanche likely happened in the last 24 hours. Photo: A. Faulkner

     

  • We noted a relatively small avalanche on the wall of Sage Basin that failed naturally within the storm snow. Photo: GNFAC

  • Skiers on 02/22/2024 observed an old avalanche that appeared to of been natural that happened sometime last week near 02/15 -02/16. Photo: H. Bigos-Lowe

  • The skillet slid sometime recently. Based on the snow on top I'm guessing Thursday-Friday last week (Feb 15-16th), but it could have happened up to a week earlier. Broke ~2 ft deep, 150 ft wide, and it was hard to tell how far it ran, but I'm estimating 200 vertical feet. Photo: GNFAC

  • From IG: 2 avalanches from either this morning or yesterday at the bottom of Skyline ridge 2’ at the crown

  • From FB 02/17/24: "Observed runout debris from a small avalanche on a south facing forested slope in Upper Tepee Basin. Shows avalanches can occur through forested areas." Photo: C. Sexton

  • From obs: "We observed another, probably rider triggered avalanche in Wapiti Creek that broke on old snow near the ground ~2 feet deep and ~60ft across." Photo: S. Jett

  • From obs: "We observed large natural avalanches from afar on the west side of Snowslide Mountain. We observed these from a few miles away and were probably several feet deep and a few hundred feet wide." Photo: S. Jett

  • From obs: "We observed large natural avalanches from afar on...the east aspect of a peak south of Woodward Mountain. We observed these from a few miles away and were probably several feet deep and a few hundred feet wide." Photo: S. Jett

  • Natural avalanche in Sunlight Basin. Photo taken 2/14/24. Slide appeared to be a few days old. Photo Credit: GNFAC

  • Avalanche in Sage Basin that appeared likely to have been remotely triggered by a snowmobiler from ~100 ft away. Photo taken 2/14/24. Slide was fresh, likely broke yesterday, 2/13/24. Photo Credit: GNFAC

  • Natural avalanche in Sage Basin. Photo taken 2/14/24. Slide appeared to be a few days old. Photo Credit: GNFAC

  • Natural avalanche in Sage Basin. Photo taken 2/14/24. Slide appeared to be a few days old. Photo Credit: GNFAC

  • An overview photo of the 3/4 mile wide avalanche in Tepee Basin. Photo: A. Vaughn

  • Photo of a natural avalanche that was reported on 02/09/2024. Photo taken on 02/10/2024. Photo: Z. Peterson

  • Photo of a natural avalanche that was reported on 02/09/2024. Photo taken on 02/10/2024. Photo: Z. Peterson

  • A portion of the debris pile from a rider triggered an avalanche on 02/07/2024. This avalanche broke 3/4 of a mile wide and had multiple large piles of debris with this being one of the largest. 

  • The contiuation of the crown of an avalanche that was remotely triggered by a rider on 02/07. This was a very wide avalanche that broke 3/4 of a mile long, 3-4' deep. Photo: GNFAC

  • The crown of an avalanche that was remotely triggered by a rider on 02/07. This was a very wide avalanche that broke 3/4 of a mile long, 3-4' deep. Photo: GNFAC

  • This crack opened up above our snowpit as we made our exit away from the steeper terrain of the "Skillet" run toward low-angle trees. Photo: GNFAC

  • We triggered booming collapses and watched cracks shoot out across terrain features and snow shake off nearby trees for the entirety of our tour from the meadow near the car to the top of the Skillet. Photo: GNFAC

  • From obs: "We heard numerous large-scale collapses and witnessed the development of propagating tensile fractures on a 20°-25° slope along the skin track.... We skied this location 4 times this week. Each time, we experienced collapsing and fracturing within the snowpack. and stuck to skiing conservative, low-angle lines." Photo: T. Kalakay

  • We saw multiple old avalanches that happened sometime in the last week, likely near the end of the last storm. Photo: GNFAC

  • We saw multiple old avalanches that happened sometime in the last week, likely near the end of the last storm. Photo: GNFAC

  • Recent avalanches seen in Taylor Fork near Beaver Creek. These likely happened on 01/31/2024. Photo: GNFAC

  • From email: "A friend and I were riding in lower Tepee today, staying on low angle terrain because of the current avalanche conditions. When side hilling on a 24 degree slope, I saw cracks shoot out approximately 100 feet around me. It was a smaller slope, but things are still pretty sensitive. This was a north facing slope in a valley that shouldn’t have been too wind loaded. " Photo: J. Norlander

Videos- Southern Madison

WebCams


Raynolds Pass, Looking N

Snowpit Profiles- Southern Madison

 

Select a snowpit on the map to view the profile image

Weather Forecast Southern Madison

Extended Forecast for

20 Miles S Big Sky MT

  • Tonight

    Tonight: Increasing clouds, with a low around 26. West wind 7 to 16 mph becoming south southwest in the evening.

    Increasing
    Clouds

    Low: 26 °F

  • Sunday

    Sunday: A slight chance of snow showers between 2pm and 5pm, then a chance of rain and snow showers.  Partly sunny, with a high near 48. Breezy, with a south southwest wind 17 to 26 mph, with gusts as high as 33 mph.  Chance of precipitation is 30%. Little or no snow accumulation expected.

    Breezy.
    Partly Sunny
    then Chance
    Rain/Snow

    High: 48 °F

  • Sunday
    Night

    Sunday Night: A slight chance of rain and snow showers before 7pm, then a slight chance of snow showers between 7pm and midnight.  Mostly cloudy, then gradually becoming mostly clear, with a low around 20. Breezy, with a west southwest wind 18 to 23 mph becoming north northwest 7 to 12 mph in the evening. Winds could gust as high as 30 mph.  Chance of precipitation is 20%.

    Slight Chance
    Rain/Snow and
    Breezy then
    Partly Cloudy

    Low: 20 °F

  • Monday

    Monday: Sunny, with a high near 44. Breezy, with a west wind 5 to 10 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 29 mph.

    Sunny then
    Sunny and
    Breezy

    High: 44 °F

  • Monday
    Night

    Monday Night: Mostly clear, with a low around 22. West wind 16 to 21 mph becoming east northeast 5 to 10 mph in the evening. Winds could gust as high as 25 mph.

    Mostly Clear

    Low: 22 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 49. Light and variable wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 18 mph.

    Mostly Sunny

    High: 49 °F

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 30. South wind 10 to 13 mph, with gusts as high as 18 mph.

    Partly Cloudy

    Low: 30 °F

  • Wednesday

    Wednesday: A chance of rain after noon.  Partly sunny, with a high near 53. South wind 10 to 16 mph, with gusts as high as 24 mph.

    Mostly Sunny
    then Chance
    Rain

    High: 53 °F

  • Wednesday
    Night

    Wednesday Night: A chance of rain and snow before 3am, then a slight chance of snow.  Mostly cloudy, with a low around 32.

    Chance
    Rain/Snow

    Low: 32 °F

The Last Word

We began our daily forecasts on December 7. 130 daily forecasts and 464 reported avalanches later, we wrapped up our daily forecasting season on April 14th. While avalanches remain a concern until the snow is in the rivers, read our SEASON SUMMARY to look back at the heart of the 2023-24 avalanche year.

04 / 15 / 24  <<  
 
this forecast
 
  >>  This is the most recent forecast.