Trip Planning for Southern Gallatin

as of 5:00 am
Today8″ | NA
Dec 1 6″ |
Nov 30 2″ |
9460′     03/30 at 14:00
Weather station is Offline
9000′     12/02 at 21:00
4℉
37″ Depth
Bottom Line: A foot of new snow fell onto a weak snowpack over the last two days. A widespread weak layer beneath the new snow will make avalanches break easily. Human triggered avalanches are likely on all slopes, especially wind loaded ones. The avalanche hazard is very serious today and cautious route finding is essential for safe travel.

Past 5 Days

Mon Nov 28

Considerable
Tue Nov 29

Moderate
Wed Nov 30

Moderate
Thu Dec 1

Considerable
Today

Considerable

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

  • Tonight

    Tonight: Partly cloudy, with a low around 2. Wind chill values as low as -15. Breezy, with a south wind 14 to 20 mph, with gusts as high as 30 mph.

    Partly Cloudy
    and Breezy

    Low: 2 °F

  • Saturday

    Saturday: Sunny, with a high near 21. Wind chill values as low as -20. Breezy, with a south wind 14 to 17 mph, with gusts as high as 26 mph.

    Sunny and
    Breezy

    High: 21 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 7. Wind chill values as low as -5. South wind 9 to 11 mph.

    Partly Cloudy

    Low: 7 °F

  • Sunday

    Sunday: Snow showers likely, mainly after 11am.  Increasing clouds, with a high near 30. Wind chill values as low as -10. South wind 10 to 14 mph, with gusts as high as 21 mph.  Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Snow Showers
    Likely

    High: 30 °F

  • Sunday
    Night

    Sunday Night: Snow showers.  Low around 16. Southwest wind 8 to 11 mph.  Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Snow Showers

    Low: 16 °F

  • Monday

    Monday: A 30 percent chance of snow showers, mainly before 11am.  Mostly cloudy, with a high near 24. Breezy, with a southwest wind 9 to 16 mph, with gusts as high as 24 mph.

    Chance Snow
    Showers and
    Breezy

    High: 24 °F

  • Monday
    Night

    Monday Night: A 30 percent chance of snow showers.  Mostly cloudy, with a low around 12. South southwest wind around 13 mph.

    Chance Snow
    Showers

    Low: 12 °F

  • Tuesday

    Tuesday: A 30 percent chance of snow showers.  Mostly cloudy, with a high near 21. Breezy.

    Chance Snow
    Showers and
    Breezy

    High: 21 °F

  • Tuesday
    Night

    Tuesday Night: A 20 percent chance of snow showers.  Mostly cloudy, with a low around 9. Breezy.

    Slight Chance
    Snow Showers
    and Breezy

    Low: 9 °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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