Trip Planning for Cooke City Area

as of 5:00 am
Today0″ | 5-10 WSW
Dec 3 0″ | 15-40 SW
Dec 2 10″ | 25-50 S
10,000′     12/04 at 05:00
10.8℉
SW - 4mph
Gusts 10mph
9100′     12/04 at 10:00
26℉
46″ Depth
Bottom Line: Between Wednesday and Friday over two feet of snow fell accompanied by strong winds which caused large, 3-4 foot deep natural avalanches on all aspects. The likelihood of triggering a large avalanche has decreased, but the consequences are high. Large, human-triggered avalanches are possible. Danger may increase this afternoon if snowfall is heavy.
Primary Problem: Persistent Weak Layer

Past 5 Days

Wed Nov 30

Moderate
Thu Dec 1

Considerable
Fri Dec 2

Considerable
Sat Dec 3

Considerable
Today

Moderate

Relevant Avalanche Activity

Cooke City
COOKE CITY
Collapses North of Cooke City
COOKE CITY
AS
Elevation: 9,500
Aspect: SE
Coordinates: 45.0202, -109.9380
Caught: 0 ; Buried: 0

Obs 12/3/22:

"Large collapses on primarily solar aspects (S/SE, ~9,500’)."

"Lots of whumphing but not much (if any) cracking...:"


More Avalanche Details
Cooke City
Mt Fox
Large Natural on Fox, Cooke
Incident details include images
Mt Fox
HS-N-R3-D3-O
Elevation: 11,000
Aspect: SE
Coordinates: 45.1212, -109.9300
Caught: 0 ; Buried: 0

From IG 12/3: Confirming more of what you saw, lots of large natural avalanches up high. Most notable was this massive slide on fox, looks to have broke 2-6’ deep and over 1000’ wide. Couldn’t quite see the toe from our tour but it looked to have run over 1000’ vertical. Never have seen one so large on Fox… 


More Avalanche Details
Cooke City
Sheep Mountain
Natural on Sheep Mtn, Cooke
Incident details include images
Sheep Mountain
N-R3-D2.5
Elevation: 10,400
Aspect: E
Coordinates: 45.0722, -109.9280
Caught: 0 ; Buried: 0
More Avalanche Details

Relevant Photos

Displaying 1 - 14
  • Photo: GNFAC

  • Observed 12/3/22. Photo: Z. Peterson

  • From IG 12/3: "...Most notable was this massive slide on fox, looks to have broke 2-6’ deep and over 1000’ wide. Couldn’t quite see the toe from our tour but it looked to have run over 1000’ vertical. Never have seen one so large on Fox…" Photo: M. Cohen

  • Natural avalanche on Republic Mtn. 12/2/22 Photo: Z. Peterson

  • Near Cooke City (12/2/22) We saw multiple large natural avalanches that broke last night or early this morning. Photo: GNFAC

  • Near Cooke City (12/2/22) We saw multiple large natural avalanches that broke last night or early this morning. Photo: GNFAC

  • Near Cooke City (12/2/22) We saw multiple large natural avalanches that broke last night or early this morning. Photo: GNFAC

  • 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

  • Today

    Today: Snow.  High near 29. Southwest wind 11 to 13 mph.  Chance of precipitation is 100%. Total daytime snow accumulation of around 3 inches.

    Snow

    High: 29 °F

  • Tonight

    Tonight: Snow before 11pm, then snow showers after 11pm. The snow could be heavy at times.  Low around 14. West southwest wind 13 to 16 mph.  Chance of precipitation is 100%. New snow accumulation of around 6 inches.

    Heavy Snow

    Low: 14 °F

  • Monday

    Monday: Snow showers, mainly before 11am.  High near 21. Wind chill values as low as -5. West wind 13 to 17 mph.  Chance of precipitation is 90%. New snow accumulation of around 3 inches.

    Snow Showers
    then Chance
    Snow Showers

    High: 21 °F

  • Monday
    Night

    Monday Night: A 30 percent chance of snow showers.  Mostly cloudy, with a low around 10. Wind chill values as low as -5. West southwest wind 15 to 18 mph.  New snow accumulation of around an inch possible.

    Chance Snow
    Showers

    Low: 10 °F

  • Tuesday

    Tuesday: A 40 percent chance of snow.  Mostly cloudy, with a high near 18. West southwest wind 11 to 15 mph.  New snow accumulation of around 2 inches.

    Chance Snow

    High: 18 °F

  • Tuesday
    Night

    Tuesday Night: A 20 percent chance of snow before 11pm.  Mostly cloudy, with a low around 7. West southwest wind 11 to 14 mph.

    Slight Chance
    Snow then
    Mostly Cloudy

    Low: 7 °F

  • Wednesday

    Wednesday: Mostly sunny, with a high near 20. West southwest wind around 11 mph.

    Mostly Sunny

    High: 20 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 4. West southwest wind around 10 mph.

    Partly Cloudy

    Low: 4 °F

  • Thursday

    Thursday: Mostly sunny, with a high near 19. Southwest wind 9 to 13 mph.

    Mostly Sunny

    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.

12 / 3 / 22  <<  
 
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