Regional Conditions for Bridgers

as of 5:00 am
Mar 270″ | 15-30 W
Mar 26 2″ | 5-20 W
Mar 25 7″ | 5-15 W
8100′     3/28 at 02:00
19 ℉
0″New
8500′   3/28 at 02:00
17 ℉
W - 12 mph
Gusts 30mph
Bottom Line: Recent snow and strong winds have created dangerous avalanche conditions. Winds yesterday were stronger than expected, gusting up to 35 mph out of the west. These strong winds rapidly built cornices and heavily wind loaded many slopes. Many avalanche were reported yesterday on wind-loaded slopes. Avoid wind-loaded slopes today. If the new snow becomes wet, it will slide easily and far on the ice crusts beneath it.

Past 5 Days

Mon Mar 23

Low
Tue Mar 24

Moderate
Wed Mar 25

Moderate
Thu Mar 26

Considerable
Fri Mar 27

Considerable

Avalanche Activity- Bridgers

Bridger Range
The Ramp
Skier triggered avalanche near Bridger Bowl
Incident details include images
The Ramp
SS-AS-R1-D1.5
Coordinates: 45.8288, -110.9310
Caught: 1 ; Buried: 0

A skier triggered an avalanche on a windloaded slope just north of Bridger Bowl on 3/26/2020. The skier lost their ski in the slide


More Avalanche Details
Bridger Range
The Throne
Natural avalanches in new snow in Bridgers
Incident details include images
The Throne
SS-N
Coordinates: 45.8822, -110.9520
Caught: 0 ; Buried: 0

From obs: "We toured up in the Throne area today. Moderate winds were blowing snow at mid elevations and ridgetops. We found dry boot top powder on East facing slopes, the snow skied upside down. We observed loose and slab avalanches on many aspects up high and at mid elevations, all looked like new snow avalanches that happened yesterday. I’ve attached a photo of an east facing slope near the Throne."  Photo: S. Jonas


More Avalanche Details
Bridger Range
Bridger Bowl
Natural avalanches in the new snow, Bridger Range
Incident details include images
Bridger Bowl
SS-N-R1-D1-I
Coordinates: 45.8156, -110.9230
Caught: 0 ; Buried: 0

1. Saw some really cool small avalanches today at Bridger. There was an obvious cycle last night on a density change, it wasn't sliding on the crust. The instability had decreased by 10 am and we couldn't get anything to move. Really cool to see such thin soft slabs propagating up to 50 ft. Good piles of debris under steep chutes.

2. Soft slabs were reactive on rocky south easterly aspects where sun crusts had formed.


More Avalanche Details

Photos- Bridgers

Displaying 1 - 40
  • Significant cornice growth and wind transport on Bridger Ridge. Photo: T. Allen

  • From obs: "We toured up in the Throne area today. Moderate winds were blowing snow at mid elevations and ridgetops. We found dry boot top powder on East facing slopes, the snow skied upside down. We observed loose and slab avalanches on many aspects up high and at mid elevations, all looked like new snow avalanches that happened yesterday. I’ve attached a photo of an east facing slope near the Throne."  Photo: S. Jonas

  • A skier triggered slide on a windloaded slope just north of Bridger Bowl. The skier lost their ski in the slide. Photo: R. Anderson

  • In the Bridger Range, avalanches released naturally on a density change in the new snow sometime Tuesday night (3/24). Photo: E. Knoff

  • In the Bridger Range, avalanches released naturally on a density change in the new snow sometime Tuesday night (3/24). Photo: E. Knoff

  • Snowfall throughout the afternoon fluctuated between S1 - S5 (during brief squalls). The winds started out moderate and from the west but calmed by the last lap ~5 pm. The new snow (from last night/this morning) was fairly well bonded to the sun/melt-freeze crust below, but the storm came in subtly upside down. Today’s snowfall (accumulating ~3” while skiing between 1-530) was light. Right along the ridgeline, we triggered 4 predictable small storm slabs 4~6” deep on the upside-down storm snow from last night/this morning, but surprisingly not on the old crust. They were each 5-10m wide x 5m long and only ran ~5m vertically. Photo: Z Miller

  • This is a photo of a small roof avalanche near Island Park. Warming temperatures cause water to percolate through the snow which lubricates the sliding surface. Roof avalanches have injured and killed people in the past, just one more thing to worry about. Photo: M.E. 

  • Dave Zinn digs a hand pit along the ridge to assess how the new snow is sticking to the ice crust. Photo: GNFAC

  • Obs: "School bus size cornices over Easterly portions of Lionhead Ridge. It is hard to tell from the photo, but the largest cornices were about 20-25' tall. We dug a few pits on East Facing slopes between 9,000-9,500 ft with the worst result being an ECTN-21 however these Cornices are primed and ready to fall with the abundant sunshine and warming weather." Photo: JR

  • From e-mail: "Natural wet slides... caused us to back off our plan of heading that way and ski a north, shady aspect instead. On a southern aspect. 9000ft. 1:30pm. We dug a hasty pit and observed a weak layer about 1m down. The facets were beginning to round." Photo: K. Master

  • From IG post with #gnfacobs: "I triggered a small windslab, mid slope on the north face of Wilson. It was a a pretty stubborn slab that broke above me. Cross loaded from lookers right. 6-8” deep." Photo: B Gill

  • From IG post with #gnfacobs: "I triggered a small windslab, mid slope on the north face of Wilson. It was a a pretty stubborn slab that broke above me. Cross loaded from lookers right. 6-8” deep." Photo: B Gill

  • From south of Big Sky yesterday 3/17 about 9:00, just north of Buck Ridge at 8500'. Large surface hoar on northerly aspects. Photo: Spence

  • We dug near the top of Bacon Rind and found 155cm of snow. Our primary concern is with the upper snowpack. As it warms and wets we can expect an increase of avalanche activity on the ice crusts. Facets are still dry and soft at the bottom of the pack and I got this layer to break with an ECTP29. Photo: GNFAC

  • We observed 7 wet, loose snow avalanches today in the Northern Bridger Range. All avalanches were in the R1, D1-1.5 size range. They would be consequential in the steep, technical terrain where they occurred. Photo: GNFAC

  • We observed 7 wet, loose snow avalanches today in the Northern Bridger Range. All avalanches were in the R1, D1-1.5 size range. They would be consequential in the steep, technical terrain where they occurred. Photo: GNFAC

     

  • We intentionally triggered a small wind slab and cornice before committing to a north-facing line in Frazier Basin. Photo: GNFAC

  • Spencer Jonas, GNFAC intern, in a snowpit in Beehive Basin. We found over 6 feet of snow and just dug our the top 4 feet to assess the stability. The new snow is bonding well and there were no signs of instability. Photo: GNFAC

  • From obs. on 3/10/2020: "Really touchy windslab formation throughout the day. 6-12 in slabs running on freeze crust." Photo: D. Wyckoff

  • Cornices have grown rapidly in the last few days. These will be susceptible to breaking and could trigger pillows of wind slabs under them. Photo: Bridger Bowl Ski Patrol

  • Strong wind stripped snow off many slopes above treeline. Photo: GNFAC

  • This naturally triggered avalanche likely happened Tuesday morning. Strong wind loaded slopes and made huge cornices. Photo: GNFAC

  • The winds blew the new new into wind slabs that avalanched naturally yesterday. This photo was taken at 9:30 a.m. on Tuesday (3/10) by Evan Schock.

  • A falling cornice triggered a large slide in the wet snow on an east facing slope up Hyalite. It was north of Mt. Blackmore and west of History Rock. Photo: R. Parsons

  • A google earth view of the cornice triggered location, 

    45.4626N, -111,0219W
    8766'

    Photo: R. Parsons

  • Point releases across highway from Bacon Rind. 3/6/2020.

    Photo: GNFAC

  • Point releases across the highway from Bacon Rind. 3/6/2020

    Photo: GNFAC

  • Wet slide in Buffalo Horn Creek. 3/6/2020.

    Photo: A. Norlander

  • Overview of an avalanche triggered on 2/27/2020 at 8:30 p.m. by a groomer between Storm Castle and Swan Creeks in the northern Gallatin Range. The driver was ok, but the machine did a full barrel roll and was very badly damaged. Photo: GNFAC

  • An avalanche triggered on 2/27/2020 at 8:30 p.m. by a groomer between Storm Castle and Swan Creeks in the northern Gallatin Range. The driver was ok, but the machine did a full barrel roll and was very badly damaged. The debris piled 8' deep on the road, which creates a terrain trap. Photo: GNFAC

  • An avalanche was triggered on 2/27/2020 at 8:30 p.m. by a groomer between Storm Castle and Swan Creeks in the northern Gallatin Range. The driver was ok, but the machine did a full barrel roll and was very badly damaged. Photo: GNFAC

  • Looking up the path of an avalanche triggered on 2/27/2020 at 8:30 p.m. by a groomer between Storm Castle and Swan Creeks in the northern Gallatin Range. The driver was ok, but the machine did a full barrel roll and was very badly damaged. Photo: GNFAC

  • Looking down the path of an avalanche triggered on 2/27/2020 at 8:30 p.m. by a groomer between Storm Castle and Swan Creeks in the northern Gallatin Range. The driver was ok, but the machine did a full barrel roll and was very badly damaged. Photo: GNFAC

  • From obs form: "While approaching Black Mountain from Pine Creek Lake.... We skied South aspect and as it warmed we triggered D1 R1 slabs that ran slow and short." Photo: T. Hoefler

  • From email: "Photo attached of a natural avalanche from yesterday, just south of Cooke City.  It's on an E, NE aspect, with a crown around 9,300'.  Looks like it occurred yesterday am, as a result of a cornice fall." B. Fredlund

  • Cornice triggered slab avalanche in the Hourglass Chute.

    Photo: Z. Miller

  • Looking up into the gully from the debris of the cornice triggered avalanche. Photo: M. Sebren

  • Looking north at the crown of the cornice triggered slide in the Hourglass, north of Bridger Bowl. Photo: M. Sebren

  • The debris ran almost to the low meadow. Photo: BBSP

  • The avalanche crown (3-4 feet deep) is visible near the ridgeline. Photo: BBSP

Videos- Bridgers

WebCams


Bridger Base Area

Ridge, Looking North

Bridger Lift

Weather Forecast Bridgers

Extended Forecast for

10 Miles NNE Bozeman MT

  • Overnight

    Overnight: Snow likely.  Mostly cloudy, with a low around 13. Wind chill values as low as zero. West wind around 11 mph.  Chance of precipitation is 60%. Total nighttime snow accumulation of 1 to 2 inches possible.

    Snow Likely

    Low: 13 °F

  • Saturday

    Saturday: Snow likely, mainly before noon.  Partly sunny, with a high near 30. Wind chill values as low as zero. West wind 11 to 15 mph, with gusts as high as 22 mph.  Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    Snow Likely

    High: 30 °F

  • Saturday
    Night

    Saturday Night: A 30 percent chance of snow, mainly before 7pm.  Partly cloudy, with a low around 21. Southwest wind 9 to 15 mph, with gusts as high as 22 mph.  New snow accumulation of less than a half inch possible.

    Chance Snow
    then Mostly
    Clear

    Low: 21 °F

  • Sunday

    Sunday: A 20 percent chance of snow after noon.  Sunny, with a high near 36. Southwest wind 8 to 11 mph.

    Sunny then
    Slight Chance
    Snow

    High: 36 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 28. South southwest wind around 11 mph.

    Partly Cloudy

    Low: 28 °F

  • Monday

    Monday: Snow likely, mainly after noon.  Mostly cloudy, with a high near 40. South southwest wind 11 to 15 mph, with gusts as high as 22 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Slight Chance
    Snow then
    Snow Likely

    High: 40 °F

  • Monday
    Night

    Monday Night: A 50 percent chance of snow.  Mostly cloudy, with a low around 23. Breezy, with a west southwest wind 16 to 23 mph, with gusts as high as 33 mph.  New snow accumulation of 1 to 2 inches possible.

    Chance Snow
    and Breezy

    Low: 23 °F

  • Tuesday

    Tuesday: Snow likely, mainly after noon.  Mostly cloudy, with a high near 30. West wind around 17 mph, with gusts as high as 26 mph.

    Snow Likely

    High: 30 °F

  • Tuesday
    Night

    Tuesday Night: A chance of snow, mainly before midnight.  Mostly cloudy, with a low around 13.

    Chance Snow

    Low: 13 °F

The Last Word

This article in Powder Magazine about backcountry skiing during the COVID-19 pandemic is worth a read.

The Gallatin County Health Department and the Montana Department of Health and Human Services websites have up-to-date information on all things Coronavirus related.