Trip Planning for Southern Madison

as of 5:00 am
Feb 130″ | 20-28 SE
Feb 12 0″ | 5-6 E
Feb 11 0″ | 5-20 NW
9460′     02/14 at 3:00
13.5℉
S - 12mph
Gusts 22 mph
9000′     02/14 at 02:00
13℉
62″ Depth
Primary Problem: Wind Slab
Bottom Line: Wind slab avalanches are the primary problem resulting from increased winds from the west yesterday and this morning. Today winds will increase a bit more and shift to the south. The size, distribution, and sensitivity of these wind slabs will increase throughout the day. Persistent slab avalanches remain on our radar because there is a widespread layer of weak, faceted snow that formed in late January. This layer is buried 1-3 feet deep and seems to have been unreactive in recent days

Past 5 Days

Sun Feb 9

Considerable
Mon Feb 10

Considerable
Tue Feb 11

Moderate
Wed Feb 12

Moderate
Thu Feb 13

Moderate

Relevant Avalanche Activity

Southern Madison
Sunlight Basin
Small Wind Slab Taylor Fork
Incident details contain video
Sunlight Basin
SS-N-R1-D1
Elevation: 9,150
Aspect: E
Coordinates: 44.9731, -111.3100
Caught: 0 ; Buried: 0

We saw one wind slab avalanche (R1, D1) in Sunlight Basin. This slide was fresh from this morning or yesterday. 50 feet wide and 6 inches deep. 

 


More Avalanche Details
Southern Madison
Taylor Fork
Persistent Slab Avalanches in Taylor Fork
Incident details include images
Incident details contain video
Taylor Fork
SS-AM-R2-D2-O
Elevation: 9,200
Coordinates: 45.0607, -111.2720
Caught: 0 ; Buried: 0

We rode into the Taylor Fork, down into the bottom of Sunlight Basin, across Carrot Basin and to the Wilderness Boundary. We saw four persistent slab avalanches that likely broke last weekend or at the beginning of the week. All appeared to be snowmobiler-triggered R1-2, D1.5-2 avalanches at broke of the January layer of near-surface facets and surface hoar. Additionally, we saw one wind slab avalanche (R1, D1) in Sunlight Basin. This slide was fresh from this morning or yesterday. 

We dug a crown profile for the persistent slab avalanche in Sunlight (attached). ECTN24 on the SH layer buried 50 cm (20") deep.


More Avalanche Details
Out of Advisory Area
Two Rider triggered slides in Gravelly Range
Incident details include images
SS-AM-R2-D2
Coordinates: 44.8502, -111.7670
Caught: 0 ; Buried: 0

From FB message: "Two snowmobiler triggered avalanches in Gravelly Range. Riders did not have beacons or rescue equipment. Riders made it out safe luckily."


More Avalanche Details

Relevant Photos

Displaying 1 - 40

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 Weather Advisory February 14, 03:00pm until February 15, 10:00amClick here for hazard details and duration Winter Weather Advisory
  • Overnight

    Overnight: Snow likely, mainly after 4am.  Mostly cloudy, with a low around 7. Wind chill values as low as -10. South southwest wind 18 to 20 mph, with gusts as high as 28 mph.  Chance of precipitation is 60%. Total nighttime snow accumulation of 1 to 2 inches possible.

    Low: 7 °F

    Snow Likely

  • Friday

    Friday: Snow.  High near 22. Wind chill values as low as -5. South southwest wind 14 to 16 mph, with gusts as high as 23 mph.  Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    High: 22 °F

    Snow

  • Friday Night

    Friday Night: Snow.  Low around 10. Wind chill values as low as -5. South southwest wind 9 to 14 mph becoming northwest after midnight. Winds could gust as high as 20 mph.  Chance of precipitation is 100%. New snow accumulation of around an inch possible.

    Low: 10 °F

    Snow

  • Saturday

    Saturday: A chance of snow before 1pm, then a slight chance of snow after 4pm.  Mostly cloudy, with a high near 14. Wind chill values as low as -5. Northwest wind 13 to 15 mph, with gusts as high as 22 mph.  Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    High: 14 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A 40 percent chance of snow, mainly after 11pm.  Mostly cloudy, with a low around 8. South southwest wind 10 to 14 mph, with gusts as high as 20 mph.  New snow accumulation of less than a half inch possible.

    Low: 8 °F

    Chance Snow

  • Sunday

    Sunday: Snow.  High near 17. South southwest wind around 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    High: 17 °F

    Snow

  • Sunday Night

    Sunday Night: Snow.  Low around 15. South southwest wind 9 to 16 mph, with gusts as high as 24 mph.  Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 15 °F

    Snow

  • Washington's Birthday

    Washington's Birthday: Snow.  Cloudy, with a high near 21. West southwest wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 21 °F

    Snow

  • Monday Night

    Monday Night: Snow, mainly before 11pm.  Mostly cloudy, with a low around 12.

    Low: 12 °F

    Snow

The Last Word

02 / 12 / 25  <<  
 
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