Trip Planning for Southern Gallatin

as of 5:00 am
Today0″ | NA
Dec 3 0″ | NA
Dec 2 8″ | NA
9460′     03/30 at 14:00
Weather station is Offline
9000′     12/04 at 08:00
19℉
36″ Depth
Bottom Line: Wind slabs are possible to trigger, especially where they formed on top of buried weak layers. Snow and wind this afternoon may create fresh, unstable wind slabs. Be cautious of drifts of snow on steep slopes and dig down to check for buried weak layers before riding steep slopes.
Primary Problem: Wind-Drifted Snow

Past 5 Days

Wed Nov 30

Moderate
Thu Dec 1

Considerable
Fri Dec 2

Considerable
Sat Dec 3

Moderate
Today

Moderate

Relevant Photos

Displaying 1 - 7
  • At 1:30pm on 11/23 I intentionally triggered a fresh drift of snow in a narrow avalanche path along the edge of the north bowl at Bridger. Northeast aspect at 7,600’ elevation. The crown was 6-8” deep consisting of snow that fell today, 20’ wide and ran 250’ vertical. SS-ASc-R2-D1.5-I. Photo: GNFAC

  • Big Sky ski patrol triggered these slides with explosives on 11/22 during routine avalanche mitigation work. The avalanches were hard slabs that averaged 12" deep and broke on a weak layer above a crust on top of snow that fell in October. Photo: BSSP

  • Big Sky ski patrol triggered these slides with explosives on 11/22 during routine avalanche mitigation work. The avalanches were hard slabs that averaged 12" deep and broke on a weak layer above a crust on top of snow that fell in October. Photo: BSSP

  • Observer reported "A number of Avalanche Crowns on an east aspect at 9500 ft." in Tepee Basin.

  • An observer reported "A number of Avalanche Crowns on an east aspect at 9500 ft." in Tepee Basin

  • From obs: "Skied Hyalite Peak today and found a wind slab ~10cm deep. Ski cut a small cornice below the main face and broke a small slide that carried ~20’ with little energy with a ~25’ wide crown" Photo: C. Crowe

  • Evidence of wind-loading creating the conditions for avalanches in the Bridger Range. Cracking is an indicator of instability. The observer noted this was "Nothing consequential," but this shows that unstable drifts are forming. They will be more consequential where there is more snow and as the wind creates larger drifts. Photo: E Smith

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Weather Stations- Southern Gallatin

Weather Forecast Southern Gallatin

Extended Forecast for

17 Miles SE Big Sky MT

Winter Weather Advisory December 4, 11:00am until December 5, 11:00amClick here for hazard details and duration Winter Weather Advisory
  • Today

    Today: Snow, mainly after 11am.  High near 28. Wind chill values as low as -5. Breezy, with a south southeast wind around 15 mph, with gusts as high as 21 mph.  Chance of precipitation is 90%. Total daytime snow accumulation of less than one inch possible.

    Snow and
    Breezy

    High: 28 °F

  • Tonight

    Tonight: Snow.  Low around 16. South wind 11 to 14 mph, with gusts as high as 20 mph.  Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Snow

    Low: 16 °F

  • Monday

    Monday: Snow likely, mainly before 8am.  Mostly cloudy, with a high near 23. Breezy, with a south southwest wind 13 to 18 mph, with gusts as high as 25 mph.  Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Breezy. Snow
    Likely then
    Chance Snow

    High: 23 °F

  • Monday
    Night

    Monday Night: A 20 percent chance of snow.  Mostly cloudy, with a low around 12. Wind chill values as low as zero. South southwest wind around 14 mph, with gusts as high as 21 mph.

    Slight Chance
    Snow

    Low: 12 °F

  • Tuesday

    Tuesday: A 30 percent chance of snow.  Partly sunny, with a high near 19. Breezy, with a south southwest wind 14 to 16 mph, with gusts as high as 24 mph.

    Chance Snow
    and Breezy

    High: 19 °F

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 9. South southwest wind 11 to 14 mph, with gusts as high as 21 mph.

    Partly Cloudy

    Low: 9 °F

  • Wednesday

    Wednesday: Mostly sunny, with a high near 18. South southwest wind 10 to 13 mph, with gusts as high as 20 mph.

    Mostly Sunny

    High: 18 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 6.

    Partly Cloudy

    Low: 6 °F

  • Thursday

    Thursday: Partly sunny, with a high near 19. Breezy.

    Partly Sunny
    and Breezy

    High: 19 °F

The Last Word

Your field observations are hugely helpful as we build a picture of snowpack stability. Let us know if it was a beautiful day or snowy, deep powder, avalanches seen or just boring riding. Submit your observations on our new page or read them all here.

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