Regional Conditions for Bridgers

as of 5:00 am
Today0″ | N/A
Apr 22 2″ | N/A
Apr 21 3″ | N/A
8100′     4/04 at 11:00
39 ℉
0.0″New
8500′   at 1100
33 ℉
W - 17 mph
Gusts 22mph
Bottom Line: This week expect classic spring snowpack conditions, with great variability throughout the day and between aspect and elevation. Ideally the snowpack will be mostly frozen and stable in the morning, and then it will inevitably soften and lose strength through the day. Be diligent with route finding and snowpack assessment, anticipate changing conditions, pay attention to unexpected findings, and have a safe route to bail at any time. Consider terrain you will have to travel across or underneath later in the day when natural wet slides may occur or be easier to trigger. See our forecast page for general spring snowpack and travel advice.

Past 5 Days

Wed Apr 10

None
Fri Apr 12

None
Mon Apr 15

None
Fri Apr 19

None
Mon Apr 22

None

Avalanche Activity- Bridgers

Bridger Range
Bridger Bowl
Widespread large natural wet loose in Bridgers
Incident details include images
Bridger Bowl
WL-N-R2-D1.5-S
Elevation: 8,000
Coordinates: 45.9072, -110.9750
Caught: 0 ; Buried: 0

Today (4/19/19) there were more and larger wet slides in addition to those that slid yesterday. Activity started before noon and slides were D1.5-D2 wet loose. One wet slab released north of Bridger Peak around 1400, probably from a cornice fall. There was widespread activity in addition to yesterday's slides on all slopes from Bridger Peak through Frazier Basin.


More Avalanche Details
Bridger Range
Bridger Peak
Natural wet slab near Bridger Peak
Incident details include images
Bridger Peak
WS-N-R3-D2-I
Elevation: 8,500
Aspect: E
Coordinates: 45.7743, -110.9380
Caught: 0 ; Buried: 0

One wet slab released north of Bridger Peak around 1400, probably from a cornice fall. Today (4/19/19) there were more and larger wet slides on top of and adjacent to those that slid yesterday. Activity started before noon and slides were D1.5-D2 wet loose. There was widespread activity in addition to yesterday's slides on all slopes from Bridger Peak through Frazier Basin.


More Avalanche Details
Northern Madison
Fan Mountain
D3s on Fan and Cedar Mtn., Cornice/slab and wet loose at Big Sky
Fan Mountain
WL-N-R2-D3-O
Elevation: 10,500
Aspect: E
Coordinates: 45.2957, -111.5130
Caught: 0 ; Buried: 0

From BSSP: "There was considerable cornice growth... in most cases, natural failure sometime early morning, triggering recent wind slabs. Shots were producing very local results, with the exception of orbit in the gum wall, failing size 2 on storm/old snow interface. Also, low on the west wall, an east aspect, we had a 2’ crown triggered by cornice failure. This failed on a maybe week-old interface and partly filled the terrain trap. Similar stubborn results were observed on route, but once warmed up, these slabs became active in lenin, dirtbag wall, and hanging valley triggered on skis this afternoon. The upper a-z’s, pinnacles, and dirt bag wall were problematic with natural wet loose failure in most areas by late afternoon, running on previous melt/freeze crust. 

In the backcountry, fan mtn and cedar mtn failed well into older layers on east aspects from cornice failure, up to size 3-sizeable avalanches."


More Avalanche Details

Photos- Bridgers

Displaying 1 - 40 of 4.6116860184274E+18
  •  

    Link to donate to the Friends of GNFAC: https://www.givebiggv.org/organizations/friends-of-the-gallatin-national-forest-avalanche-center

  • This slide occurred around 1400hrs on 4/19/19 with sunshine and temps above 50 F. Photo: GNFAC

  • Activity from 4/19/19. Photo: GNFAC

  • Activity from 4/19/19. Photo: GNFAC

  • Activity from 4/19/19. Photo: GNFAC

  • Activity from 4/19/19. Photo: GNFAC

  • Wet loose slides ran naturally on 4/18 on northeast through south aspects in the Bridger range. Photo: GNFAC

  • Wet loose slides ran naturally on 4/18 on northeast through south aspects in the Bridger range. (Screenshot of BBowl webcam).

  • Photo: GNFAC

  • Photo: GNFAC

  • Photo: GNFAC

  • Skiers saw this crown on Saturday (4/13) in the N. Bridgers. Photo: M. Gaffney

  • Recent spring snow has created instabilities that are confined to within the new snow. Areas such as ridgelines where fresh drifts form should be approached with caution. Cornices and fresh wind slabs should be avoided after fresh snow and/or strong wind. Photo. M. Gaffney

  • Photo: GNFAC

  • From e-mail on 4/11/19: "We found reactive storm slabs and touchy windslabs near ridgelines. We kicked off a small windslab in 4th of July from the top of the couloir. Attached is a photo of the crown to give you a depth perspective. It was about 6 feet across and 3-4 inches deep."

  • Heavy rain on Monday produced a widespread wet loose avalanche cycle in the Bridger Range. Photo: GNFAC 

  • Snowpit dug at Bridger Bowl on Monday (4/8). Heavy snow and rain are creating dangerous avalanche conditions. Photo: BBSP

  • Below 3-5" of new snow there is a supportable frozen crust on top of a wet snowpack on most slopes. Avalanches are mostly confined to the new snow on top of this crust (wet loose, dry loose, wind slabs). However, where the snowpack did not freeze below the new snow, or when this crust melts, deeper wet slides are possible. Photo: GNFAC

  • A glide crack (the "frown" of dirt in the middle of the image) has opened up on the SE face of the Throne, in the Northern Bridger Range. Photo taken 4/1/2019.

    Photo credit: GNFAC

  • Snowmobile-triggered slide near Fairy Lake on Saturday (3/30). New snow was drifted into small wind slabs that may remain reactive in isolated areas.  Photo: P. Cronin

  • Two pits on the west side of Saddle peak. They were dug relatively close to each other, but subtle changes in aspect and elevation resulted in very different conditions. North-facing slopes remain cold and dry for now, while anything that is in the sun is transitioning to a springtime snowpack. Photo: GNFAC

  • Skiers triggered this wet slab avalanche on Saturday afternoon (3/23). Warm sunny days have weakened the snowpack and made wet avalanches possible. Photo: G. Egnew

  • Skiers triggered this wet slab avalanche on Saturday afternoon (3/23). Warm sunny days have weakened the snowpack and made wet avalanches possible. Photo: G. Egnew

  • Debris pile from the smaller of two wet slab avalanches on the south-facing chutes off of Texas Meadows. P: A. Schauer

  • Photo of the track of the larger of two wet slabs on the south-facing chutes off of Texas Meadows. Photo: A. Schauer

  • Two wet slabs that looked to have released during the past 48 hours. The smaller slide on the left had a debris pile that was 6' deep. The larger slide on the right failed at the ground and took most of the snow in the chute with it. The large slide may have been triggered from smaller loose wet slide that was set off by a skier. Photo: A. Schauer

  • Large debris pile from a recent wet loose avalanche north of Bridger Bowl. Photo: A. Schauer

  • Outside Cooke City up Zimmer Creek, a skier spotted this cornice fall which triggered a small pocket down low. Photo: F. Madsen

  • Many wet loose and wet slab avalanches were seen near Zimmer Creek (north of Cooke City) on south and east aspects. Temperatures were warm at 10,000 feet. Photo: F. Madsen

  • This photo near Lionhead, is indicative of the wet loose avalanches we are seeing on many low elevation, south facing slopes throughout our advisory area. Daytime temperatures near 50F will make avalanches like this more frequent and widespread in the coming days.

  • Low angle metal roofs have heavy, thick slabs of snow that built up during persistent cold temperatures. These slabs will slide during warm temperatures. Be on the lookout for overhead hazard and be cautious where you walk or park your car during warm sunny days. An additional urban hazard are large icicles are that will break during warm days. Photo: A. Schauer

  • On Saturday (3/16) in the northern Bridger Range we saw natural and skier triggered wet loose slides that were small, but could have severe consequences if they catch you in unforgiving terrain. Photo: GNFAC

  • We saw old wind slab crowns near Fairy Lake on Saturday (3/16). These types of slides are now unlikely to trigger, but worth keeping in mind in steep heavily wind loaded terrain. Photo: GNFAC

  • We saw old wind slab crowns near Fairy Lake on Saturday (3/16). These types of slides are now unlikely to trigger, but worth keeping in mind in steep heavily wind loaded terrain. Photo: GNFAC

  • On Friday (3/15) dry loose avalanches were easily triggered on steep terrain in Hyalite. Six inches of recent snow easily slid on crusts buried below it, and was drifted into small wind slabs near ridgelines. These types of small slides are typically not large enough to bury a person, but are dangerous if they catch and carry you over cliffs or into trees. Photo: GNFAC

  • Skiers in the Northern Bridgers noted signs of instability in wind-transported snow and were able to trigger a wind slab. From the email: "My partner and I toured up in the Northern Bridgers today near Ainger Lake and found conditions to be more touchy than we expected. The wind was blowing hard when we entered the basin, and we observed some snow transport. As we got higher, we observed variable wind affected snow and thin wind slab, and dug a pit finding no notable weak layers aside from the wind slab which was breaking off in chunks as we skinned. We witnessed a shooting crack through the wind slab that was 2-5 cm thick where we were, and soon after triggered a small slide and turned around. At its deepest the crown was around 15 cm thick, so a lot thicker than what we had previously been seeing! It wasn't a problem where we were, probably about enough to knock someone down and take them for a short ride, but could have been consequential in more dangerous terrain." Photo: E. Birkeland

  • Skiers in the Northern Bridgers noted signs of instability in wind-transported snow and were able to trigger a wind slab. From the email: "My partner and I toured up in the Northern Bridgers today near Ainger Lake and found conditions to be more touchy than we expected. The wind was blowing hard when we entered the basin, and we observed some snow transport. As we got higher, we observed variable wind affected snow and thin wind slab, and dug a pit finding no notable weak layers aside from the wind slab which was breaking off in chunks as we skinned. We witnessed a shooting crack through the wind slab that was 2-5 cm thick where we were, and soon after triggered a small slide and turned around. At its deepest the crown was around 15 cm thick, so a lot thicker than what we had previously been seeing! It wasn't a problem where we were, probably about enough to knock someone down and take them for a short ride, but could have been consequential in more dangerous terrain." Photo: E. Birkeland

  • Snowboard-triggered wind slab near Fairy Lake in the Northern Bridgers. Photo: E. Marcoux

  • We found a deep snowpack and good stability near The Throne in the northern Bridger Range on Saturday (3/9). Photo: GNFAC

  • This slide was triggered on a steep (40 deg) southeast facing slope at Round Lake outside Cooke City. It failed 8" deep on a layer of graupel and small facets. An adjacent hill slid at the same depth beforehand. This layer is not on most slopes, but as this slide shows it is on some. Doug was in the area and dug a pit in the crown soon after it was triggered. Photo: J. Fritz

Videos- Bridgers

Weather Forecast Bridgers

Extended Forecast for

10 Miles NNE Bozeman MT

  • This
    Afternoon

    This Afternoon: Mostly sunny, with a high near 55. West wind around 16 mph, with gusts as high as 24 mph.

    Mostly Sunny

    High: 55 °F

  • Tonight

    Tonight: A slight chance of rain before 1am, then a slight chance of rain after 4am.  Increasing clouds, with a low around 37. West wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 29 mph.  Chance of precipitation is 20%.

    Partly Cloudy
    then Slight
    Chance Rain

    Low: 37 °F

  • Wednesday

    Wednesday: A 40 percent chance of rain, mainly between 9am and noon.  Partly sunny, with a high near 54. Breezy, with a west wind 10 to 15 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 34 mph.

    Chance Rain
    and Breezy

    High: 54 °F

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 31. Blustery, with a northwest wind 17 to 22 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 30 mph.

    Mostly Clear
    and Blustery
    then Mostly
    Clear

    Low: 31 °F

  • Thursday

    Thursday: Mostly sunny, with a high near 54. North wind 7 to 9 mph becoming west southwest in the afternoon.

    Mostly Sunny

    High: 54 °F

  • Thursday
    Night

    Thursday Night: Mostly cloudy, with a low around 37.

    Mostly Cloudy

    Low: 37 °F

  • Friday

    Friday: A chance of rain, then rain likely and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 53. Breezy.  Chance of precipitation is 70%.

    Chance Rain
    then Rain
    Likely and
    Breezy

    High: 53 °F

  • Friday
    Night

    Friday Night: Rain likely before 9pm, then rain and snow likely between 9pm and midnight, then a chance of snow after midnight. Some thunder is also possible.  Mostly cloudy, with a low around 34. Breezy.

    Rain/Snow
    Likely and
    Breezy then
    Chance Snow

    Low: 34 °F

  • Saturday

    Saturday: A chance of snow before 1pm, then a chance of rain between 1pm and 4pm, then a chance of snow after 4pm.  Partly sunny, with a high near 47. Breezy.

    Chance Snow
    then Chance
    Rain/Snow and
    Breezy

    High: 47 °F

The Last Word

For more spring travel advice see this article from our GNFAC forecaster blog.