Regional Conditions for Northern Gallatin

as of 5:00 am
Today0″ | 25-50 SW
Jan 26 0″ | 5-15 SW
Jan 25 0″ | 5-10 NW
9980′     01/27 at 08:00
6.0℉
SW - 25mph
Gusts 51mph
8100′   01/27 at 8:00
16℉
42″ Depth
Bottom Line: The snowpack from Lionhead through the Bridger Range is shallow with a distinct layer of weak, depth hoar near the ground and a stripe of feathery surface hoar buried under 6-18" of snow. It will take weeks or months to trust these layers fully, but they are adjusting to the current load and avalanches are less likely. Stability is currently similar in these ranges but today's snowfall will heavily favor the mountains around West Yellowstone. As the snow begins to add up, stability will decrease.
Primary Problem: Persistent Weak Layer

Past 5 Days

Sat Jan 23

Moderate
Sun Jan 24

Moderate
Mon Jan 25

Moderate
Tue Jan 26

Moderate
Today

Moderate

Avalanche Activity- Northern Gallatin

Northern Gallatin
Maid of the Mist
Natural avalanches near Maid of the Mist
Incident details include images
Maid of the Mist
SS-N-R1-D1.5
Coordinates: 45.4164, -110.9700
Caught: 0 ; Buried: 0

From skier in Hyalite on 1/23/21: "I observed a couple older (1-2 week) naturals on E/ESE aspects in the Divide basin, and newer (1-3 days) naturals on the NE side of Divide and an east aspect at the head of the Maid of the Mist basin."


More Avalanche Details
Northern Gallatin
Mt Blackmore
Loose Snow and Slab Avalanche, Mt Blackmore
Incident details include images
Mt Blackmore
SS-N-R1-D1
Coordinates: 45.4444, -111.0040
Caught: 0 ; Buried: 0

A skier near Mt Blackmore obsersed two loose snow avalanches on the east face of Blackmore and a small slab avalanche on the north face. Continued active wind-loading


More Avalanche Details
Northern Gallatin
Hyalite - main fork
Couple large collapses in Hyalite Creek
Hyalite - main fork
Coordinates: 45.4472, -110.9620
Caught: 0 ; Buried: 0

From obs: "While ski touring in the Hyalite Creek Drainage today, my ski partner and I both, at separate times of the day, remote triggered sudden collapses. Each time, we felt the snow collapse underneath our feet, and then heard and felt a deep "whumph". The noise came from the North of us both times, where the slope was slightly steeper (still below about 28 degrees-- not colored with "slope angle shading" layer on caltopo.)."


More Avalanche Details

Photos- Northern Gallatin

Displaying 1 - 40
  • From Obs: "I skied into Maid of the Mist today, it looks like part of a cornice fell and it failed on a wind slab from last weekend’s snow. It did not step down to the depth hoar. Photo: S Reinsel

  • From obs on 1/23/21: "I observed a couple older (1-2 week) naturals on E/ESE aspects in the Divide basin, and newer (1-3 days) naturals [shown in photo] on the NE side of Divide and an east aspect at the head of the Maid of the Mist basin." Photo: S. Reinsel

  • From obs on 1/23/21: "I observed a couple older (1-2 week) naturals on E/ESE aspects in the Divide basin, and newer (1-3 days) naturals [shown in photo] on the NE side of Divide and an east aspect at the head of the Maid of the Mist basin." Photo: S. Reinsel

  • Small, loose snow avalanches on the east face of Mt Blackmore. Photo: B. Richards

  • Small slab avalanche and wind-loading on the north face of Mt Blackmore. Photo: B. Richards

  • Winds actively drifting the new snow into unstable slabs. Photo: GNFAC

  • We looked at the avalanche in Hyalite that was triggered on Saturday 1/9/21. The slope angle was 33-35 degrees on the starting zone of the lookers right path. It broke 2-3’ deep on weak facets below a hard slab, 1000’ wide and the debris was 5-9’ deep. East aspect, 9,800’ elevation. Photo: GNFAC

  • We looked at the avalanche in Hyalite that was triggered on Saturday 1/9/21. The slope angle was 33-35 degrees. It broke 2-3’ deep on weak facets below a hard slab, 1000’ wide and the debris was 5-9’ deep. East aspect, 9,800’ elevation. Photo: GNFAC

  • We looked at the avalanche in Hyalite that was triggered on Saturday 1/9/21. It broke 2-3’ deep on weak facets below a hard slab, 1000’ wide. East aspect, 9,800’ elevation. Photo: GNFAC

  • Skiers triggered this avalanche on Flanders Mountain on 1/9/21. It was triggered out of the photo to the right on a seperate slope around the corner. It propagated over 1000' wide, and 2-4' deep. Photo: GNFAC

  • Skiers triggered this avalanche on Flanders Mountain on 1/9/21. It was triggered out of the photo to the right on a separate slope around the corner. It propagated over 1000' wide, and 2-4' deep. Photo: GNFAC

  • Skiers triggered this avalanche on Flanders Mountain on 1/9/21. It was triggered out of the photo to the right on a seperate slope around the corner. It propagated over 1000' wide, and looks to be 6' deep at deepest. Photo: A. Blackmer

  • Skiers triggered this avalanche on Flanders Mountain on 1/9/21. It propagated around the corner over 1000' wide into an adjacent path.

  • From obs: "We dug a pit and found a really weak snowpack! Regardless of the poor stability result, we proceeded to ski an East facing bowl south of Flanders Mountain knowing that the slope angle was low and only flirted with 30 degrees in some parts of the bowl.... My partner skied first, he skied practically all the way back to the skin track when the slope failed and the entire bowl released. He was pretty well out of the way of danger by the time the bowl began to move. From our perspective, the trigger happened at the bottom of the slope. The bowl was not the only slope that slid, the avalanche propagated around the ridge and released a slide on the more south-easterly facing aspect just south of the bowl. We tail-tucked and went home glad no one was caught or hurt."

  • From obs: "I went up Blackmore [1/9/21]... A pit on a south aspect at 9400’ had 100 cm, and failed at ECTP22 on large, loose facets underlying a crust about 50 cm down. A pit on a north aspect at 9400’ had 105 cm and failed at ECTP20 on the same layer, although the crust was close to nonexistent on this aspect. The snowpack overall was weaker and less consolidated here. A pit on an east aspect at 9400’ had 135 cm, and failed at ECTP25 on the same layer as the other two. I experienced a couple collapses while in shallower, treed areas on north and south aspects today. I did not observe any recent natural activity, but do not trust the snow very much."

  • A skier got a collapse and crack in Lick Creek. The collapse has sizeable displacement which is indicative of a very thick and unstable weak layer. Photo: W. Casper

  • A backcountry skier wrote, "...observed a fairly large, cornice-triggered avalanche on an east aspect at 9600’ that looked to be several hours old. The crown was 40-100 cm deep, and it looked like it failed about 20 cm into the facets that make up the lower half of the snowpack in this region."

  • A backcountry skier wrote, "...observed a fairly large, cornice-triggered avalanche on an east aspect at 9600’ that looked to be several hours old. The crown was 40-100 cm deep, and it looked like it failed about 20 cm into the facets that make up the lower half of the snowpack in this region."

  • From obs: "Skied Mt Blackmore this morning. Very windy up in the basin, but calm along the ridgeline. Lots of signs of wind-loading and drifting on most slopes. I felt/heard 3 collapses while ascending the trees up to the east ridge. Saw a debris pile on the N face, likely from a cornice fall in the last 24hrs." Photo: M. Lavery

  • From obs: "I did not observe any recent natural activity from the top of Flanders, save for one small slide that started right at a ridgeline. I did not experience any collapsing or cracking, although thinner snow near trees or rocks was weak and unsupportable."

  • From obs: "Skier triggered a 1.5' slide to his right while making a turn near a cliff band. The slide did not intersect with the skier's path. We did a ECT before choosing our line and were not able to get the soft slab, or anything else to propagate, but clearly, the slab is ready to go as it slid on rocks. We both skied out without incident."

  • From obs: "Skier Triggered a 1.5' slide to his right while making a turn near a cliff band. The slide did not intersect with the skier's path. We did a ECT before choosing our line and were not able to get the soft slab, or anything else to propagate, but clearly, the slab is ready to go as it slid on rocks. We both skied out without incident."

  • Crown of a skier triggered avalanche on the Football Field, out of bounds south of Bridger Bowl, on 12/25/2020.

  • Crown of a skier triggered avalanche on the Football Field, out of bounds south of Bridger Bowl, on 12/25/2020.

  • Large natural avalanche on an east face in the Divide Cirque. I suspect it failed during the storm on the 22nd as the crown and flanks were obscured. Photo: GNFAC

  • From email: "Noted one natural crown off Elephant, NW aspect, 9,600', D2 HS, estimated crown depth around 2 feet, appeared several days old." Photo: G. Antonioli

  • Strong wind over the weekend deposited fresh drifts, about 10" deep, over weak snow. Bridger Bowl ski patrol triggered a few of these drifts on Monday (12/21) during avalanche mitigation. Photo: BBSP

  • A skier kicked off a larger than expected cornice as they skinned up the ridge on the W side of Beehive basin on Sunday (12/20/20).

  • From obs.: "Kicked off a larger than expected cornice as we skinned up the ridge on the W side of Beehive basin. Wind was blowing 20-ish across the opening, cornice had grown pretty good-sized for so little snow. I was making a turn on skins to get back away from the edge when the cornice gave way, probably pulled 25 feet end to end and broke a good 5 feet back from the lee edge of the cornice. I was able to get off the cornice and avoid going over the edge. No activity on the slope below after cornice drop,... although there was a decent hard slab that pulled out just below the ridge when the cornice dropped onto it.... Hard slab on the edges was about 10" deep, some big chunks of cornice on the slope for any future riders..."

  • Natural slide off lower Hyalite Peak. Photo: H. Van Denburg

  • Small, loose snow avalanche in the Divide Cirque in Hyalite Canyon. These could push a skier into/ off obstacles such as trees and cliffs. Photo: GNFAC

  • Light wind created soft drifts of new, low density snow near the ridgeline in the Bridger Range. This wind slab easily cracked when touched with skis, 20 feet along the ridge and 5-10 feet down, but didn't slide. This is a sign drifts will be unstable as they grow with more snow and wind. Photo: GNFAC

  • A skier saw this avalanche get triggered at Bridger Bowl (Schlasmans Lift) this afternoon 12/2/2020. "...The toe of the slide was all of 6’ deep. There is about a foot of fresh sitting on top of faceted crust that is sitting on top of more facets and another crust,..." Photo: Anonymous

  • Watch the video HERE!

  • The BBWC (Bridger Bowl Wind Cloud) on Tuesday 10/27 accompanied 50-60 mph gusts. This strong wind drifted recent snow into slabs that could avalanche on steep slopes. Early season snow means we need to be thinking about and managing avalanche hazard when we travel in the mountains. Photo: GNFAC

  • Skier triggered slide on 10/26 at Bridger Bowl near the top of Pierre's Knob lift. Photo: @taitbigmoneyswan

  • Skier triggered slide on 10/26 at Bridger Bowl near the top of Pierre's Knob lift. Photo: @taitbigmoneyswan

  • Wind-drifted snow avalanched naturally in a few areas of the northern ranges yesterday (10/23). This photo was near Fairy Lake in the Bridger Range. Photo: B. VandenBos

WebCams


Bozeman Pass, Looking SE

Weather Forecast Northern Gallatin

Extended Forecast for

14 Miles SE Gallatin Gateway MT

Winter Weather Advisory until January 28, 05:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until January 28, 05:00pm

    NOW until
    5:00pm Thu

    Winter Weather Advisory

  • Today

    Today: Patchy blowing snow after 10am. Partly sunny, with a high near 22. Wind chill values as low as -10. Breezy, with a south southwest wind 21 to 23 mph, with gusts as high as 41 mph.

    Patchy
    Blowing Snow
    and Breezy

    High: 22 °F

  • Tonight

    Tonight: Partly cloudy, with a low around 18. South southwest wind 16 to 18 mph, with gusts as high as 32 mph.

    Partly Cloudy

    Low: 18 °F

  • Thursday

    Thursday: Mostly sunny, with a high near 30. South wind around 18 mph, with gusts as high as 38 mph.

    Mostly Sunny

    High: 30 °F

  • Thursday
    Night

    Thursday Night: A 20 percent chance of snow after 11pm.  Mostly cloudy, with a low around 24. South southwest wind 14 to 18 mph, with gusts as high as 36 mph.

    Slight Chance
    Snow

    Low: 24 °F

  • Friday

    Friday: Snow likely, mainly after 11am.  Mostly cloudy, with a high near 31. South southwest wind 10 to 13 mph, with gusts as high as 26 mph.  Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    Snow Likely

    High: 31 °F

  • Friday
    Night

    Friday Night: Snow likely, mainly before 11pm.  Mostly cloudy, with a low around 21. West southwest wind around 9 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    Snow Likely

    Low: 21 °F

  • Saturday

    Saturday: A 30 percent chance of snow, mainly before 11am.  Partly sunny, with a high near 26. Southwest wind 9 to 14 mph, with gusts as high as 24 mph.  New snow accumulation of 1 to 2 inches possible.

    Chance Snow

    High: 26 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 17. South southwest wind 11 to 14 mph, with gusts as high as 23 mph.

    Partly Cloudy

    Low: 17 °F

The Last Word