Regional Conditions for Bridgers

as of 5:00 am
Dec 240″ | 22-31 S
Dec 5 0″ | 25-40 W
Dec 4 0″ | 20-30 W
8100′     3/25 at 2:00
27 ℉
0.4″New
8500′   at 200
26 ℉
SW - 4 mph
Gusts 13mph
Bottom Line: bl
Primary Problem: Persistent Weak Layer

Past 5 Days

Tue Dec 4

Moderate
Wed Dec 5

Considerable
Wed Dec 12

Moderate
Mon Dec 24

Considerable
Fri Jan 18

High

Photos- Bridgers

Displaying 1 - 40 of 4.61168601843E+18
  • Small fresh wind slab crowns below ridgeline in the Northern Bridgers. Photo: G. Antonioli

  • Wind loads were easy to trigger. This one was triggered on purpose up Maid of the Mist in Hyalite. Photo: A. Peterson

  • Wind slabs were easily triggered. Although small in size, they indicate that larger slopes would have larger avalanches. Photo: A. Peterson

  • Strong winds on Tuesday (12/4) drifted recent low density snow into thick slabs at ridgelines, and mid to lower elevations in the Bridger Range. Photo: GNFAC

  • Strong winds on Tuesday (12/4) drifted recent low density snow into thick slabs at ridgelines, and mid to lower elevations. Photo: GNFAC

  • From some skiers: "We encountered veey localized loading that easily fractured and propagated uphill on a south aspect." Photo: S. Reinsel

  • From some skiers: "We encountered veey localized loading that easily fractured and propagated uphill on a south aspect." Photo: S. Reinsel

  • From e-mail: "triggered a small wet slide in the Going Home chute coming back into Beehive, and we observed another natural wet slide on a similar aspect that had occurred since we toured past in the morning. Wind was light or calm all day and wind effect was minimal even at ridgelines." Photo: C. Kussmaul

  • We observed this old avalanche on Sunday 12/2. It may have broke up to a week prior, on weak facets that formed in mid-November. Photo: GNFAC

  • We observed this wind slab and debris on Sunday (12/2). It likely formed from the new snow and wind on Saturday morning. Photo: GNFAC

  • We observed this wind slab crown on Sunday (12/2). It likely formed from the new snow and wind the Saturday morning. Photo: GNFAC

  • Steep, wind loaded slopes had fresh drifts, 6" deep and 10-30' wide that were easy to trigger on Saddle Peak (12/1). Photo: GNFAC

  • Cracking of fresh drifts was a sign that avalanches were likely on steep, wind loaded slopes on Saddle Peak. Photo: GNFAC

  • This avalanche was triggered by explosives at Bridger Bowl. It illustrates the depth of the wind slabs to be on the lookout for. Photo: BBSP

  • From an email: "We did observe a natural slide at around 8300ft that failed on the high pressure facets that formed prior to these last two shots of snow. It appears that it was triggered by a slough from steeper, rocky terrain above, the crown was about 14 inches deep and around 50ft wide, in complex rocky terrain. The debris pile was approx. 200cm deep, plenty deep to bury a person." Photo: A. Pohl

  • From an email: "We did observe a natural slide at around 8300ft that failed on the high pressure facets that formed prior to these last two shots of snow. It appears that it was triggered by a slough from steeper, rocky terrain above, the crown was about 14 inches deep and around 50ft wide, in complex rocky terrain. The debris pile was approx. 200cm deep, plenty deep to bury a person." Photo: A. Pohl

  • From an email:

    "We did observe a natural slide at around 8300ft that failed on the high pressure facets that formed prior to these last two shots of snow. It appears that it was triggered by a slough from steeper, rocky terrain above, the crown was about 14 inches deep and around 50ft wide, in complex rocky terrain. The debris pile was approx. 200cm deep, plenty deep to bury a person."  Photo: A. Pohl

  • Snow water equivalent at SNOTEL stations in the GNFAC advisory areas for the 18-19 season to date. Weak layers formed on the surface of the snowpack during the dry weather (flat section of lines), then they were buried by the recent 10-14" of snow (steep increase at end of graph). Image: GNFAC

  • Skiers saw this natural avalanche near Mt. Blackmore on Saturday (11/24). Almost a foot of new snow fell and buried weak snow that formed on the surface of the snowpack during cold and dry weather. Be cautious of avalanches breaking at this weak interface for a few days and with the next storm. Photo: M. Staples

  • Winds over the weekend are growing the Bridger Range's cornices. Photo: T. Hoefler

  • Strong winds in the Bridger Range formed dense slabs on leeward slopes. Yesterday, A skier north of Bridger Bowl triggered multiple wind slabs near the top of Wolverine Bowl. The skier turned around and chose a safer objective. Photo: S. Whitefields 

  • Climbers triggered this very small wind slab on the way to a climb up Flanders in Hyalite (11/11). A tiny slide to a skier can be bad news for a climber since losing one's balance or getting pushed off a cliff can be deadly. From an email (edited):

    Hyalite Snow Conditions:...we dug two hasty pits on east facing slopes in Flanders....
    8200'- isolated opening in trees in an area on rocks, shallower snow (~50cm). CT12 at the ground, again just tapping on the back of other hand, so not super legit, but did raise eyebrows.  
    8450'- Opening below cliff bands on exposed traverse. Deeper snow (~80-90cm). No concerns other than storm snow and snow coming off of cliff bands. Classic Hyalite shifty winds. We released a small (10-15cm) storm slab on traverse into the climb .  
    Weather: It was snowing and blowing all day.

    Photo: S. Magro

  • From an email:

    "By and large right side up snowpack. Some small facets below the 11/1 ice crust at the ground, but well bonded snowpack overall. Pit observations consistent with hand pits dug throughout the day touring north out of Bridger Bowl." Photo: M. Zia

  • From an email: "ECTP 5 at the top of a chute on the south face of the Texas Meadows knob. Propagated on a layer 15cm from the top of the snowpack." Photo: J. Zimmerer

  • From Instagram:

    "Careful out there this year! While we are lucky enough to have a mostly stable snowpack here in Southwest Montana, we did just find this little wind slab well below the ridge line in Middle Basin. Slowboarder was fine" @chartierk

  • A skier found 80 cm of stable snow on an east facing slope at 9200' in Beehive Basin. Winds created these newborn cornices along the ridge. Photo: T. Allen

  • From e-mail: "Was descending off of Zach Attack tonight and set off a small slab in the gully on the decent. This was about 100 meters below the start of pitch 1. Constant whipping winds and lots of new deposited snow likely caused the slab to form. Climber caused. Didn’t carry me as it was small. Would be wary of the mummy cooler gullies abover scepter as well."

  • From e-mail: "Was descending off of Zach Attack tonight and set off a small lab in the gully on the decent. This was about 100 meters below the start of pitch 1. Constant whipping winds and lots of new deposited snow likely caused the slab to form. Climber caused. Didn’t carry me as it was small. Would be wary of the mummy cooler gullies abover scepter as well."

  • From a tour up Miller Creek: "Good stability and structure found overall.  No collapsing nor cracking experienced, minor wind effect, and only some minor point release avalanche activity noted on the east aspect of Crown Butte." Photo: B. Fredlund

  • From Zack Keskinen:
     
    Noted multiple small crowns (15-20cms) on NE steep rocky terrain. Pit seemed reasonably consistent with a couple hand pits across the day in the "above treeline" zone.
  • From Zack Keskinen:
     
    Mt Blackmore 11/07
    HN24 - 20cm
    S1 - 8/8 - W (Light)
     
    Noted multiple small crowns (15-20cms) on NE steep rocky terrain.Pit seemed reasonably consistent with a couple hand pits across the day in the "above treeline" zone.
  •  From Zack Keskinen:
     
    Mt Blackmore 11/07
    HN24 - 20cm
    S1 - 8/8 - W (Light)
     
    Noted multiple small crowns (15-20cms) on NE steep rocky terrain.Pit seemed reasonably consistent with a couple hand pits across the day in the "above treeline" zone.
  • Natural wind slab that broke after 3-4 feet of new snow over 6 days. Photo: B. VandenBos

  • Natural avalanche activity was widespread in Hyalite on Tuesday 11/6. Obs from e-mail: "The newest snow (about 18", I'd guess past 48hrs) is touchy soft slab. The top 8 inches also exhibit a storm slab-like quality.  There appears to be a very slight density change between the two.  Top 8" fracture and propagate cracks readily on gentle terrain, whereas in steeper terrain, the deeper slab (again, about 18" down) was propagating as I was skinning up the headwall in the steep creek drainages and steeper features nearby. Lots of natural activity on steeper terrain, but vis was limited. Photo: G. Antonioli

  • Natural avalanche activity was widespread in Hyalite on Tuesday 11/6. Obs from e-mail: "The newest snow (about 18", I'd guess past 48hrs) is touchy soft slab. The top 8 inches also exhibit a storm slab-like quality.  There appears to be a very slight density change between the two.  Top 8" fracture and propagate cracks readily on gentle terrain, whereas in steeper terrain, the deeper slab (again, about 18" down) was propagating as I was skinning up the headwall in the steep creek drainages and steeper features nearby. Lots of natural activity on steeper terrain, but vis was limited. Photo: G. Antonioli

  • The Bridgers got 30-40” of new snow in the past week. It came in warm and dense, and it is bonding well to the old snow. Natural Avalanches broke 6-8” deep in the new snow today. This instability will heal in a day or two. Wind loaded slopes, where new snow is drifted into fresh thick slabs, will be the most likely place to trigger avalanches the next few days. Photo: GNFAC

  • From the MSU Backcountry Club Instagram page:

    Warning! This is a current, fresh, crown in the northern Bridgers! Every aspect had a visible crown and avi debris! This crown was 56cm at it deepest and over 8 meters long. ECTP21@53 and CT24@54 on the overlying slab. Photo: @msubackcountryclub More Details.

  • This avalanche was observed on the morning of Friday 11/2. It broke from a natural trigger in the Big Couloir at Big Sky Resort. New snow fell and was drifted into slabs overlying older, hard layers of snow from October. The resort is not open and no people were in the area of the avalanche at that time. Photo: Big Sky Resort More details

     

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  • Wet slab avalanche in the Centennial range. Multiple days without freezing created widespread wet slides last week (5/6-5/11). Photo: @waxeman

Videos- Bridgers

Weather Forecast Bridgers

Extended Forecast for

10 Miles NNE Bozeman MT

  • Overnight

    Overnight: A 40 percent chance of snow.  Patchy fog.  Otherwise, mostly cloudy, with a low around 29. West southwest wind 7 to 10 mph.  Total nighttime snow accumulation of 1 to 2 inches possible.

    Chance Snow
    and Patchy
    Fog

    Low: 29 °F

  • Monday

    Monday: Patchy fog before 9am.  Otherwise, cloudy through mid morning, then gradual clearing, with a high near 41. Southwest wind 13 to 15 mph, with gusts as high as 18 mph.

    Patchy Fog
    then Mostly
    Sunny

    High: 41 °F

  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 30. South wind 10 to 14 mph.

    Partly Cloudy

    Low: 30 °F

  • Tuesday

    Tuesday: A slight chance of rain between 3pm and 4pm, then a slight chance of snow after 4pm. Some thunder is also possible.  Mostly cloudy, with a high near 48. Breezy, with a southwest wind 11 to 16 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 31 mph.  Chance of precipitation is 10%.

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow and
    Breezy

    High: 48 °F

  • Tuesday
    Night

    Tuesday Night: A 30 percent chance of snow. Some thunder is also possible.  Mostly cloudy, with a low around 30. Breezy, with a southwest wind 19 to 24 mph becoming south 7 to 12 mph after midnight. Winds could gust as high as 30 mph.  New snow accumulation of less than a half inch possible.

    Chance Snow
    and Breezy

    Low: 30 °F

  • Wednesday

    Wednesday: Snow likely, mainly after noon. Some thunder is also possible.  Mostly cloudy, with a high near 42. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Snow Likely

    High: 42 °F

  • Wednesday
    Night

    Wednesday Night: Snow.  Low around 27. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.

    Snow

    Low: 27 °F

  • Thursday

    Thursday: Snow.  Cloudy, with a high near 33. Breezy.

    Snow and
    Breezy

    High: 33 °F

  • Thursday
    Night

    Thursday Night: Snow likely, mainly before midnight.  Mostly cloudy, with a low around 21.

    Snow Likely

    Low: 21 °F

The Last Word

Check out our new “Avalanches and Snowpits” menu item where we list all the reported avalanche activity.


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