Trip Planning for Southern Gallatin

as of 5:00 am
Today1″ | 21-30 SW
Feb 28 1″ | 19-31 SW
Feb 27 10″ | 10-40 N
9460′     02/29 at 05:00
14.0℉
SW - 21mph
Gusts 28 mph
9000′     02/29 at 07:00
17℉
62″ Depth
Primary Problem: Wind-Drifted Snow
Bottom Line: Wind is blowing at all elevations and scraping away the fresh snow into thick drifts which are dangerous and could be triggered. The weight of recent wind drifts are making slopes unstable. A person is likely to trigger a slide if they get into avalanche terrain. Even small slopes can avalanche and these point to instability that can be found on bigger slopes.

Past 5 Days

Sun Feb 25

Considerable
Mon Feb 26

Considerable
Tue Feb 27

High
Wed Feb 28

Considerable
Today

Considerable

Relevant Avalanche Activity

Lionhead Range
Hebgen Lake
Large whumps, Hebgen Lake
Incident details include images
Incident details contain video
Hebgen Lake
Elevation: 8,200
Aspect: NE
Coordinates: 44.8381, -111.3430
Caught: 0 ; Buried: 0

 A small whumpf in the skin track was followed by a massive one a few minutes later. I can count on one hand the number of times I got whumpfs in a skin track...rare indeed. The second one was so big it had us both deeply concerned. We peeled off the skin track after deciding to not cross a gully and soon found debris from a sizeable avalanche that released a couple days ago about 500' above us. We dug in the flank and had 100cm of snow, 60 cm new from last week. The snowfall during the Avalanche Warning, doubled the depth and more than doubled the snow water equivalent of the snowpack. It was a large load and avalanches are breaking underneath the new snow.

Karl was using his 100 cm long Norwegian Battle Saw (pic)...a bit overkill.


More Avalanche Details
Southern Gallatin
Cabin Creek
Shooting Cracks Cabin Creek
Incident details include images
Cabin Creek
Coordinates: 44.8893, -111.2060
Caught: 0 ; Buried: 0

From Obs: "As we were coming out, I spotted this cracking above the creek. A sled has passed nearby on the right side ( you can see the track). The snow cracked and was starting to rub in the left (barely)."

 


More Avalanche Details
Southern Gallatin
Specimen Creek
Whumpfing and Cracking, Specimen Creek
Specimen Creek
Coordinates: 45.0265, -111.0480
Caught: 0 ; Buried: 0

From obs: "Whumphing, collapsing and shooting cracks on all aspects, at all elevations. The longest shooting crack went over 100' long, shot right out in front of me on a 24deg E aspect slope. Propagating collapses out to 40 feet or so, very thin overall snowpack."


More Avalanche Details

Relevant Photos

Displaying 1 - 15
  • Riders saw a large crack in the snow near the Cabin Creek Cabin in the S. Madison Range. This is a red flag for unstable conditions. Anonymous

     

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  • Photo and observation from 01/20

    From obs: "Large roller balls were observed in avalanche terrain on a SE aspect at 8,300'. Alongside this observation, rather wet, sticky snow was observed throughout the tour, causing multiple glopping incidents on our skins." Photo: E. Webb

     

  • Skiers on 01/20 saw a natural avalanche that happened the day before on 01/19. Photo: E. Webb

  • From observations on 01/20:

    Shooting cracks above a cornice that created a small avalanche. Photo: D. Halama

  • From observation on 01/20:

    While approaching a cornice skiers collapsed the slope and triggered a small cornice. Photo: E. Webb

  • A small avalanche was seen in Black Bear Canyon on 01/14. This was a recent avalanche that happened today or yesterday 01/13. 

  • Cracking at Fawn Pass this was accompanied by multiple collapses during the tour. Photo: S. Reinsel

  • Large surface near Little Bear. Photo: JR Mooney

  • From IG on 12/10: "2 slides we triggered remotely in tepee yesterday"

  • From obs: "Dug into the hillside right before going up the creek. Snow pack was 75 cm deep consisting of three layers. Bottom 35cm is obviously faceted, grain size is around 2mm. Very thin ice crust at around 35cm. Upper 35 cm of snow is brand new snow from this current storm, precipitation particles, low density, with minor wind effect. Performed a quick Compression Test and the ice crust layer failed on the second tap." Photo: S. Gralla

  • 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- Southern Gallatin

WebCams


Electric Peak

Roosevelt Arch

Snowpit Profiles- Southern Gallatin

 

Select a snowpit on the map to view the profile image

Weather Stations- Southern Gallatin

Weather Forecast Southern Gallatin

Extended Forecast for

17 Miles SE Big Sky MT

Winter Storm Warning February 29, 05:00pm until March 2, 11:00pmClick here for hazard details and duration Winter Storm Warning
  • Today

    Today: Scattered snow showers, mainly after 2pm.  Patchy blowing snow before 2pm, then patchy blowing snow after 4pm. Increasing clouds, with a high near 36. Windy, with a south wind 18 to 23 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 44 mph.  Chance of precipitation is 40%. Total daytime snow accumulation of less than a half inch possible.

    Scattered
    Snow Showers
    and Patchy
    Blowing Snow

    High: 36 °F

  • Tonight

    Tonight: Snow showers, mainly after 8pm.  Widespread blowing snow, mainly between 1am and 5am. Low around 20. Windy, with a southwest wind 30 to 34 mph, with gusts as high as 50 mph.  Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Snow Showers
    and Blowing
    Snow

    Low: 20 °F

  • Friday

    Friday: Snow showers, mainly before 4pm.  Areas of blowing snow before 8am, then patchy blowing snow after 10am. High near 29. Breezy, with a southwest wind 17 to 24 mph, with gusts as high as 36 mph.  Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Snow Showers
    and Areas
    Blowing Snow

    High: 29 °F

  • Friday
    Night

    Friday Night: Snow showers likely, mainly after 11pm.  Mostly cloudy, with a low around 16. South wind 11 to 14 mph, with gusts as high as 23 mph.  Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    Snow Showers
    Likely

    Low: 16 °F

  • Saturday

    Saturday: Snow showers.  Patchy blowing snow after 9am. High near 29. Breezy, with a south southwest wind 16 to 23 mph, with gusts as high as 34 mph.  Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    Snow Showers
    and Patchy
    Blowing Snow

    High: 29 °F

  • Saturday
    Night

    Saturday Night: Snow showers likely, mainly before 11pm.  Patchy blowing snow before 8pm. Mostly cloudy, with a low around 8. Breezy, with a south southwest wind 11 to 20 mph, with gusts as high as 29 mph.  Chance of precipitation is 70%.

    Snow Showers
    Likely and
    Patchy
    Blowing Snow

    Low: 8 °F

  • Sunday

    Sunday: Snow showers likely, mainly after 11am.  Mostly cloudy, with a high near 20. Breezy, with a south southwest wind 10 to 16 mph, with gusts as high as 24 mph.  Chance of precipitation is 70%.

    Snow Showers
    Likely and
    Breezy

    High: 20 °F

  • Sunday
    Night

    Sunday Night: Scattered snow showers.  Mostly cloudy, with a low around 5. Breezy.  Chance of precipitation is 50%.

    Scattered
    Snow Showers
    and Breezy

    Low: 5 °F

  • Monday

    Monday: Scattered snow showers, mainly after 11am.  Partly sunny, with a high near 21. Breezy.  Chance of precipitation is 50%.

    Scattered
    Snow Showers
    and Breezy

    High: 21 °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.

02 / 28 / 24  <<  
 
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