Trip Planning for Southern Gallatin

as of 5:00 am
May 12″ | NA
Apr 30 1″ | NA
Apr 29 2″ | NA
9460′     03/26 at 10:00
16.2℉
NW - 10mph
Gusts 19 mph
9000′     05/22 at 09:00
32℉
51″ Depth
Bottom Line: Spring weather can be highly variable and create a mix of avalanche problems to watch out for. Snow conditions and snow stability can change drastically from day to day or hour to hour. Anticipate rapid change and plan accordingly. Plenty of snowfall over the winter with more spring snow to come makes avalanches possible into summer.

Past 5 Days

Fri Apr 19

None
Mon Apr 22

None
Fri Apr 26

None
Mon Apr 29

None
Thu May 2

None

Relevant Avalanche Activity

Cooke City
Republic Mountain
Skier triggered large Wet loose on the fin
Incident details include images
Republic Mountain
L-ASu-R2-D2-I
Elevation: 10,000
Aspect: E
Coordinates: 45.0003, -109.9540
Caught: 0 ; Buried: 0

From obs.: “Our party (3) triggered a significant wet loose slide on the fin today. I, the first skier dropped in next to existing tracks from earlier in the morning. I made a couple of small turns in unskied snow to test it and decided that not much was moving. As I continued down the wet surface snow started to slide and accumulate. My partner called me on the radio to tell me a lot of snow was moving behind me and I cut left. I traversed hard to lower angle terrain until I felt I could safely descend the rest of the slope.  My partners descended the bed surface until they could traverse out. 

We made several key mistakes today.  We knew it would be warm and that we should be up and down early.  We left later than planned, moved slower than expected and failed to adjust our plan.  We mistook lack of wet loose activity on similar aspects and elevations on features we could see as sign of stability.  We failed to make a plan B or establish a turnaround time.  We interpreted a party ahead of us that skied the slope as a go ahead.  Another party approaching behind us added pressure to go. They also skied the slope after us in similar style to my partners.

In our favor, we communicated well, radios were key, stayed calm and we managed ourselves through the situation. I feel humbled and lucky to have gotten away with a free lesson.  One that I didn't think I should have needed.”


More Avalanche Details

Relevant Photos

Displaying 1 - 19
  • On 5/4/24 Skiers triggered large wet loose slides on the Fin near Cooke City

  • Saw what looked like a wet slab avalanche from the road along the Madison River.  Roughly north facing slope at 7500'.

  • Skiers a few days ago saw several deep natural avalanches near the head of Swan Creek. These avalanches broke 2-5' deep, 2000' wide, and ran "full track". The exact date of when these avalanches happened is unknown but they likely happened over a week ago in the first few days of March. Photo: S. Reinsel

  • Skiers a few days ago saw several deep natural avalanches near the head of Swan Creek. These avalanches broke 2-5' deep, 2000' wide, and ran "full track". The exact date of when these avalanches happened is unknown but they likely happened over a week ago in the first few days of March. Photo: S. Reinsel

     

     

  • 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."

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Videos- Southern Gallatin

WebCams


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Snowpit Profiles- Southern Gallatin

 

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Weather Stations- Southern Gallatin

Weather Forecast Southern Gallatin

Extended Forecast for

17 Miles SE Big Sky MT

  • Today

    Today: Rain and snow showers likely before noon, then rain showers. Some thunder is also possible.  Snow level 8200 feet rising to 8800 feet. High near 43. Breezy, with a south southwest wind 13 to 17 mph, with gusts as high as 26 mph.  Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 43 °F

    Rain/Snow and
    Breezy

  • Tonight

    Tonight: Rain and snow showers, becoming all snow after 1am. Some thunder is also possible.  Low around 25. Southwest wind 7 to 10 mph.  Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 25 °F

    Rain/Snow

  • Thursday

    Thursday: Snow showers.  High near 38. Southwest wind 8 to 10 mph becoming northwest in the afternoon.  Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    High: 38 °F

    Snow Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 23. Northwest wind 5 to 9 mph becoming south southwest after midnight.

    Low: 23 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of snow showers between noon and 1pm, then a slight chance of rain showers after 1pm.  Mostly sunny, with a high near 49. Southwest wind 6 to 13 mph, with gusts as high as 20 mph.  Chance of precipitation is 20%.

    High: 49 °F

    Mostly Sunny
    then Slight
    Chance
    Rain/Snow

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 31. South wind 6 to 11 mph.

    Low: 31 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of snow showers before 8am, then a slight chance of rain and snow showers between 8am and 10am, then rain showers likely after 10am. Some thunder is also possible.  Snow level rising to 8400 feet in the afternoon. Partly sunny, with a high near 50. South southwest wind 6 to 13 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%.

    High: 50 °F

    Slight Chance
    Rain/Snow
    then Showers
    Likely

  • Saturday Night

    Saturday Night: Rain showers likely before 8pm, then rain and snow showers likely between 8pm and 11pm, then snow showers likely after 11pm. Some thunder is also possible.  Mostly cloudy, with a low around 30. Chance of precipitation is 60%.

    Low: 30 °F

    Rain/Snow
    Likely then
    Chance Snow
    Showers

  • Sunday

    Sunday: A chance of snow showers before 2pm, then a chance of rain and snow showers between 2pm and 4pm, then a chance of rain showers after 4pm. Some thunder is also possible.  Partly sunny, with a high near 47. Chance of precipitation is 40%.

    High: 47 °F

    Chance Snow
    Showers then
    Chance
    Rain/Snow

The Last Word

We began daily forecasts on December 7. 130 daily forecasts and 464 reported avalanches later, we wrapped up our daily forecasting season on April 14th. Read our SEASON SUMMARY to look back at the 2023-24 avalanche forecasting season.

Thank you to everyone that sent in observations, read the advisories, took an avalanche class, or donated money, time or gear. Our success is directly related to support from the community and the Forest Service. Have a safe spring and summer!

4 / 29 / 24  <<  
 
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