Trip Planning for Southern Gallatin

as of 5:00 am
Mar 14″ | 30-70 SW
Feb 29 1″ | 21-30 SW
Feb 28 1″ | 19-31 SW
9460′     03/01 at 02:00
21.1℉
SW - 29mph
Gusts 56 mph
9000′     03/02 at 01:00
22℉
67″ Depth
Primary Problem: Wind-Drifted Snow
Bottom Line: It is snowing and blowing and human triggered avalanches are likely. In places with more new snow, avalanches in that new snow will be easily triggered. Avalanches breaking in drifts are the likeliest problem you’ll encounter today and would be large enough to bury you. The weak layers that have been consistently avalanching for the last two months are also being loaded again. Keep your slope angles less than 30 degrees while we wait and see how they handle this loading event.

Past 5 Days

Mon Feb 26

Considerable
Tue Feb 27

High
Wed Feb 28

Considerable
Thu Feb 29

Considerable
Fri Mar 1

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

     

  • 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.

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

    NOW until
    11:00pm Sat

    Winter Storm Warning

  • Overnight

    Overnight: Snow likely, mainly before 5am.  Patchy blowing snow after 4am. Mostly cloudy, with a low around 20. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 28 mph.  Chance of precipitation is 70%. Total nighttime snow accumulation of 1 to 2 inches possible.

    Snow Likely
    and Patchy
    Blowing Snow

    Low: 20 °F

  • Saturday

    Saturday: Snow. The snow could be heavy at times. Some thunder is also possible.  Patchy blowing snow. High near 30. Breezy, with a south southwest wind 20 to 22 mph, with gusts as high as 33 mph.  Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    Heavy Snow
    and Patchy
    Blowing Snow

    High: 30 °F

  • Saturday
    Night

    Saturday Night: Snow likely, mainly before 8pm.  Mostly cloudy, with a low around 4. Wind chill values as low as -10. Breezy, with a south southwest wind 10 to 18 mph, with gusts as high as 28 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Breezy. Snow
    Likely then
    Chance Snow

    Low: 4 °F

  • Sunday

    Sunday: A 50 percent chance of snow after 11am.  Partly sunny, with a high near 19. Wind chill values as low as -10. West southwest wind 7 to 14 mph, with gusts as high as 21 mph.  New snow accumulation of less than a half inch possible.

    Chance Snow

    High: 19 °F

  • Sunday
    Night

    Sunday Night: A 40 percent chance of snow, mainly before 11pm.  Mostly cloudy, with a low around 5. South southwest wind 9 to 11 mph.  New snow accumulation of less than a half inch possible.

    Chance Snow

    Low: 5 °F

  • Monday

    Monday: Snow likely after 11am.  Partly sunny, with a high near 20. Breezy, with a southwest wind 11 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 60%.

    Snow Likely
    and Breezy

    High: 20 °F

  • Monday
    Night

    Monday Night: A 50 percent chance of snow.  Mostly cloudy, with a low around 9. Breezy, with a south southwest wind around 17 mph, with gusts as high as 26 mph.

    Chance Snow
    and Breezy

    Low: 9 °F

  • Tuesday

    Tuesday: Snow, mainly after 11am.  High near 24. Breezy.  Chance of precipitation is 80%.

    Snow and
    Breezy

    High: 24 °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.

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