Trip Planning for Cooke City Area

as of 5:00 am
Today10″ | 25-50 S
Dec 1 17″ | 20-46 S
Nov 30 2″ | 15-35 SW
10,000′     12/02 at 20:00
-3.1℉
SW - 16mph
Gusts 33mph
9100′     12/02 at 21:00
5℉
51″ Depth
Bottom Line: Over the past 48 hours, over two feet of new snow fell with strong winds. Human triggered avalanches are likely on all slopes, especially wind loaded ones. Snowfall stopped this morning and we just barely avoided an avalanche warning. 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 Avalanche Activity

Cooke City
Henderson Mountain
Natural Avalanche Henderson Mountain
Incident details include images
Henderson Mountain
SS-N-R2-D2-U
Elevation: 10,000
Aspect: NE
Coordinates: 45.0524, -109.9450
Caught: 0 ; Buried: 0

From email: "We noted one recent slab avalanche today on a NE aspect of Mt. Henderson, around 10,000.  We were skiing nearby on Nov. 11-12 and did not notice this slide, but that may have simply missed it (that slope becomes shaded by about noon this time of year and there was lots of wind affected snow in that area.)"


More Avalanche Details
Cooke City
Henderson Mountain
Large collapses near Cooke City
Incident details include images
Henderson Mountain
AS
Elevation: 9,800
Coordinates: 45.0524, -109.9450
Caught: 0 ; Buried: 0

From email: "Skied around Mt. Henderson the last 2 days-... we experienced at least 6 large collapses while touring the last 2 days, often after 10+ people up the same skin track."


More Avalanche Details

Relevant Photos

Displaying 1 - 7
  • On Dec 1, 2022 we found 21" new snow = 1.2"SWE that fell since the morning of 11/30. We had an ECT break and propagate 6-8" below the new snow on top of a crust that formed last week. With more snow on the way we might see avalanches break on this layer. Photo: GNFAC

  • From obs: "Well developed surface hoar was widespread this morning near Cooke City (11/25). The strong sun burned it off on aspects that received sun, but it was preserved in shaded areas." Photo: N. Salsburg

  • 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

  • From email: "Saw a recent slab avalanche today on a NE aspect of Mt. Henderson, around 10,000.  We were skiing nearby on Nov. 11-12 and did not notice this slide, but that may have simply missed it (that slope becomes shaded by about noon this time of year and there was lots of wind affected snow in that area.)" Photo: B. Fredlund

  • A 6 a.m. image of the snow that fell last night in Cooke City.

  • 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

WebCams


Soda Butte Lodge, looking West

Soda Butte Lodge, looking East

Snowpit Profiles- Cooke City Area

 

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Weather Forecast Cooke City Area

Extended Forecast for

2 Miles NNE Cooke City MT

  • Tonight

    Tonight: Partly cloudy, with a low around -2. Wind chill values as low as -25. West wind 15 to 17 mph.

    Partly Cloudy

    Low: -2 °F

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 21. Wind chill values as low as -20. West wind around 15 mph.

    Becoming
    Sunny

    High: 21 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a steady temperature around 11. Wind chill values as low as -5. West wind 8 to 11 mph.

    Mostly Clear

    Low: 11 °F

  • Sunday

    Sunday: A 50 percent chance of snow after 11am.  Partly sunny, with a high near 29. Southwest wind 7 to 10 mph.  New snow accumulation of less than one inch possible.

    Chance Snow

    High: 29 °F

  • Sunday
    Night

    Sunday Night: Snow.  Low around 15. West southwest wind 8 to 11 mph.  Chance of precipitation is 80%. New snow accumulation of around 5 inches.

    Snow

    Low: 15 °F

  • Monday

    Monday: Snow.  High near 21. West southwest wind 10 to 16 mph.  Chance of precipitation is 80%. New snow accumulation of around 2 inches.

    Snow

    High: 21 °F

  • Monday
    Night

    Monday Night: A 40 percent chance of snow.  Mostly cloudy, with a steady temperature around 13. West southwest wind around 14 mph.  New snow accumulation of less than a half inch possible.

    Chance Snow

    Low: 13 °F

  • Tuesday

    Tuesday: A 40 percent chance of snow.  Mostly cloudy, with a high near 17. West southwest wind 13 to 15 mph.

    Chance Snow

    High: 17 °F

  • Tuesday
    Night

    Tuesday Night: A 30 percent chance of snow, mainly before 11pm.  Mostly cloudy, with a steady temperature around 11. West southwest wind around 14 mph.

    Chance Snow

    Low: 11 °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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