Trip Planning for Southern Madison

as of 5:00 am
Today7″ | 10-20 SE
Mar 1 3″ | 30-70 SW
Feb 29 1″ | 21-30 SW
9460′     03/01 at 02:00
21.1℉
SW - 29mph
Gusts 56 mph
9000′     03/02 at 23:00
10℉
74″ 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

High
Wed Feb 28

Considerable
Thu Feb 29

Considerable
Fri Mar 1

Considerable
Today

Considerable

Relevant Avalanche Activity

Southern Madison
Tepee Basin
Natural in Tepee
Incident details include images
Tepee Basin
SS-N-R2-D2
Coordinates: 44.9041, -111.1850
Caught: 0 ; Buried: 0

We rode into Tepee Basin and saw two recent avalanches. One looked like it happened this morning on a treed ridgeline, 1-1.5' deep 150-200' wide.


More Avalanche Details
Southern Madison
Bacon Rind
Natural avalanche at Bacon Rind
Incident details include images
Bacon Rind
N-R2-D2-O
Aspect: E
Coordinates: 44.9609, -111.1000
Caught: 0 ; Buried: 0

Skiers observed a natural avalanche on an east-facing slope that broke 3-4' deep and 100' wide. This was a very recent avalanche likely happening in the last 12-24 hours. 


More Avalanche Details
Southern Madison
Tepee Basin
Natural avalanche in Tepee
Tepee Basin
N-R2-D2
Coordinates: 44.9041, -111.1850
Caught: 0 ; Buried: 0

We rode into Tepee Basin and saw two recent avalanches. 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.


More Avalanche Details

Relevant Photos

Displaying 1 - 40
  • 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

  • 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

  • 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.

  • From obs: "This avalanche is old and likely happened a few days ago near the end of the last storm on 01/20. NE facing slope at ~8500 feet." Photo: GNFAC

     

  • From obs: "Saw lots of shooting cracks and triggered a small slide on a short steep hill." Photo: Anonymous 

  • Several natural avalanches were observed on the ridge above the cabin in Cabin Creek. Photo: Anonymous 

  • Natural & remote trigger avalanches observed on most steep terrain. Photo: J. Kinnison. Photo taken 1/18/24

  • Natural & remote trigger avalanches observed on most steep terrain. Photo: J. Kinnison. Photo taken 1/18/24

  • 3-4 cm long surface hoar buried by recent storm snow. Photo: GNFAC

  • Cracking while riding in Taylor Fork. Photo: GNFAC

  • Cracking near the crown of an avalanche that was triggered from the flats. Photo: GNFAC

  • A rider triggered avalanche on a small slope. This was triggered from the flats 10-40' away. Photo: GNFAC

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

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 midnight. Mostly cloudy, with a low around 5. Wind chill values as low as -20. Windy, with a southwest wind 27 to 37 mph decreasing to 17 to 27 mph after midnight. Winds could gust as high as 40 mph.  Chance of precipitation is 60%. Total nighttime snow accumulation of less than one inch possible.

    Snow Likely
    and Blowing
    Snow

    Low: 5 °F

  • Sunday

    Sunday: A 30 percent chance of snow showers, mainly after 2pm.  Partly sunny, with a high near 17. Wind chill values as low as -10. Breezy, with a southwest wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon.  New snow accumulation of less than a half inch possible.

    Partly Sunny
    then Chance
    Snow Showers
    and Breezy

    High: 17 °F

  • Sunday
    Night

    Sunday Night: A 40 percent chance of snow showers.  Mostly cloudy, with a low around 2. Wind chill values as low as -20. Southwest wind 17 to 21 mph, with gusts as high as 24 mph.  New snow accumulation of less than a half inch possible.

    Chance Snow
    Showers

    Low: 2 °F

  • Monday

    Monday: Snow showers likely, mainly after 11am.  Mostly cloudy, with a high near 17. Wind chill values as low as -20. Breezy, with a southwest wind 21 to 28 mph, with gusts as high as 31 mph.  Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Snow Showers
    Likely and
    Breezy

    High: 17 °F

  • Monday
    Night

    Monday Night: A 50 percent chance of snow showers.  Mostly cloudy, with a low around 7. Breezy, with a south wind 18 to 25 mph, with gusts as high as 30 mph.  New snow accumulation of around an inch possible.

    Chance Snow
    Showers and
    Breezy

    Low: 7 °F

  • Tuesday

    Tuesday: Snow showers.  High near 22. Windy, with a south wind 25 to 30 mph increasing to 32 to 37 mph in the morning. Winds could gust as high as 41 mph.  Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Snow Showers
    and Windy

    High: 22 °F

  • Tuesday
    Night

    Tuesday Night: Snow showers likely, mainly before 11pm.  Mostly cloudy, with a low around 9. Windy, with a southwest wind 26 to 31 mph decreasing to 14 to 19 mph after midnight. Winds could gust as high as 38 mph.  Chance of precipitation is 70%. New snow accumulation of 3 to 5 inches possible.

    Snow Showers
    Likely and
    Windy

    Low: 9 °F

  • Wednesday

    Wednesday: A chance of snow showers.  Partly sunny, with a high near 20. West southwest wind 13 to 16 mph, with gusts as high as 24 mph.

    Chance Snow
    Showers

    High: 20 °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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