Trip Planning for Northern Gallatin

as of 5:00 am
Today0″ | 10-20 SW
Feb 21 0″ | 15-35 SW
Feb 20 0″ | 19-31 W
9982′     02/22 at 07:00
14.9℉
W - 12mph
Gusts 21 mph
8100′     02/22 at 07:00
24℉
42″ Depth
Primary Problem: Persistent Weak Layer
Bottom Line: Dangerous avalanche conditions exist in the mountains south of Bozeman through Island Park and Cooke City. Human-triggered avalanches and avalanches triggered remotely from the bottom of slopes, and long distances away are likely. Persistent weak layers buried 2-4 feet deep are the culprit for the widespread and consistent instability. Conservative terrain selection is essential. Recreate on slopes 30 degrees or less as we impatiently wait for stability to improve.

Past 5 Days

Sun Feb 18

Considerable
Mon Feb 19

Considerable
Tue Feb 20

Considerable
Wed Feb 21

Considerable
Today

Considerable

Relevant Avalanche Activity

Northern Gallatin
Collapses / shooting cracks in Blackmore area
Aspect: NE
Caught: 0 ; Buried: 0

From obs: "Several naturals observed from the past few days. Large collapse on a NE 25 degree slope"


More Avalanche Details
Northern Gallatin
Mt. Bole
Natural Avalanches on Mt. Bole, Hyalite
Incident details include images
Mt. Bole
N
Coordinates: 45.4156, -110.9970
Caught: 0 ; Buried: 0

From obs: "From the approach trail to Mummy II we saw two large crowns on the ridge associated with Mt. Bole. Not sure when they happened, but they looked pretty big! Observed Monday morning, February 19"


More Avalanche Details
Northern Gallatin
Hyalite - main fork
Avalanche Above Twin Falls
Incident details include images
Hyalite - main fork
Coordinates: 45.4472, -110.9620
Caught: 0 ; Buried: 0

From email: "My partner and I were out ice climbing in Hyalite today and I wanted to share our observations.

Our objective was Cleopatra’s needle. We arrived at the base of the climb around 11:30, skies were clear and winds were calm. Once I topped out around 3:30pm, skies were overcast and winds were picking up from the northwest and began to transport snow off the trees. I also noticed a pretty sizable crown on one of the convexities above Twin Falls. I traversed around to get a better look and took a couple pictures.

The crown appeared very new, likely within the past couple of days I would guess. It appeared 3 feet at its deepest and roughly 100 feet wide. I’m not sure if it was a natural or remote trigger, but definitely a scare nonetheless for any potential climbers below."


More Avalanche Details

Relevant Photos

Displaying 1 - 40
  • Observed on 02/19/2024: From obs: "From the approach trail to Mummy II we saw two large crowns on the ridge associated with Mt. Bole. Not sure when they happened, but they looked pretty big!" Photo: M. Bjornsson

  • Observed on 02/19/2024: From obs: "From the approach trail to Mummy II we saw two large crowns on the ridge associated with Mt. Bole. Not sure when they happened, but they looked pretty big!" Photo: M. Bjornsson

  • Observed on 02/19/2024: From obs: "From the approach trail to Mummy II we saw two large crowns on the ridge associated with Mt. Bole. Not sure when they happened, but they looked pretty big!" Photo: M. Bjornsson

  • Climbers in Hyalite saw an avalanche that likely happened in the last 48 hours above Twin Falls on 02/19/2024. The trigger is unknown, 3' at the deepest point, and broke 100' wide. Photo: R. Parsons 

     

  • Climbers in Hyalite saw an avalanche that likely happened in the last 48 hours above Twin Falls on 02/19/2024. The trigger is unknown, 3' at the deepest point, and broke 100' wide. Photo: R. Parsons 

     

  • Climbers in Hyalite saw an avalanche that likely happened in the last 48 hours above Twin Falls on 02/19/2024. The trigger is unknown, 3' at the deepest point, and broke 100' wide. Photo: R. Parsons 

     

     

  • A skier on 02/18/2024 saw a large natural avalanche on the NE face south of Flanders that likely happened on 02/15/2024. Photo: Anonymous 

  • From obs 2/17/24: "Lots of natural activity up buck ridge. The one photoed looked like it popped off this morning. Most activity we saw seemed to be on northern facing aspects" Photo: M. Forbes

  • From facebook: "Rode up Portal creek today... We triggered 4 avalanches with the farthest one being 300 yards away. The one in the photo was the scariest one. We were playing below the windy pass hillclimb and the chute next to it let go. We had a sledder almost get caught in it, but thankfully everyone was ok. It's scary out there!"

  • Do you like to hike? Do you like to ski? Then the King & Queen of the Ridge is for you. Hike, ski and raise money for the Friends of the Avalanche Center in their 2nd biggest fundraiser of the year. Join the effort to promote and support avalanche safety and awareness! Fundraising prizes for top 5 individuals who raise over $500. No racing is necessary to compete for the fundraising prizes. Info to fundraise is HERE or donate here. Race participants for the [insert dates] event must register separately with Bridger Bowl here.

  • Climbers in Hyalite saw an avalanche near Solstice that happened on 01/21. This avalanche is 1' deep at the crown and with 18" of facets snow below. Photo: R. Meshew

  • Climbers in Hyalite saw an avalanche near Solstice that happened on 01/21. This avalanche is 1' deep at the crown and with 18" of facets snow below. Photo: R. Meshew

  • From obs: "The crown was just over 2ft deep at its max and 150ft+ wide. The were signs of recent wind loading as we approached the bowl prior to the slide." Photo. T. Hoefler

  • The debris of an avalanche that was triggered by skiers that was triggered 400 feet above them. The skiers were not on the path of the avalanche. Photo: T. Hoefler

  • Photo: T. Hoefler

  • Skiers triggered an avalanche on an east-facing slope at 9350ft.

    From obs: "The crown was just over 2ft deep at its max and 150ft+ wide. The were signs of recent wind loading as we approached the bowl prior to the slide. We did not observe any other avalanches while we were out." Photo: T. Hoefler

  • Skiers in the SE bowl of Flanders triggered an avalanche from the bottom of the slope. This happened on 01/20.

    From Obs: "as he turned into the bowl, a remote triggered avalanche ripped out above him. He was fast to reach a safe position in the trees by the time the avalanche finished its ride. The photo shows the 3 ski tracks, and the most left one is what remote triggered above." Photo: Anonymous 

  • From obs: "We considered skiing east into middle just before the prayer flags, but when approaching the slope to dig a pit we got a significant collapse and decided to ski a more conservative pitch further north. When continuing north on the ridge we saw a recent cornice collapse which triggered an avalanche" This avalanche was triggered by skiers breaking cornices on 01/20. Photo: M. Zenker

     

     

  • Skiers saw a recent natural avalanche on the west side of Mt. Blackmore. Photo: S. Lowe

  • From obs: "The crown of the westward slide looked to be around 4'. Like the one reported the other day, it ran almost to the skin track. Winds were high in the basin and on the ridge tops, transporting snow into moderately stiff slabs." Photo: S. Lowe

  • A natural avalanche to the lookers left of the summit of Mt. Blackmore. 

    From obs: "I noticed new debris coming out of the lookers left chute on Southeast face of Blackmore. got closer to the ridge and noticed this. happened last night or this morning. 5 feet deep 50 to 100 ft wide and ran roughly 800 feet." 

    Photo: N. English

  • Avalanche triggered on 01/19. From obs on 01/20: "Off the top on the face of Blackmore- Talked to the guy that set this slide off, it was triggered while he was skiing down yesterday (01/19) morning from the summit. Ran all the way down to almost the skin track." Photo: N. English

     

     

  • From obs: "About 50' from our pit we remotely triggered two D1 slab avalanches which broke on the roll over 150' above us. Crowns looked between 1-2' and 20-30' wide. The larger of the two ran 100' more or less." Photo: S. Lowe

  • From obs: "About 50' from our pit we remotely triggered two D1 slab avalanches which broke on the roll over 150' above us. Crowns looked between 1-2' and 20-30' wide." Photo: S. Lowe

  • From Obs:  "While skiing one of our intended slopes, one of my partners skied over a small rollover and as he arrived at the bottom of the small slope a pocket had released above him and stopped just above where he was standing. The culprit was again the recent snow on top of older faceted snow." Photo: Anonymous 

  • Wind loaded gully above Crypt Orchid in Hyalite. Photo: T Hughes

  • Seen on a ski tour on 1/08. From Obs: Notice a few natural avalanches and one skier triggered avalanche near of the top of Blackmore. Looked as though it was a ski cut that popped the slab. Photo: S. Lowe

  • From obs: "I experienced a large, audible collapse and shooting cracks in a 10ft radius around me" Photo: Anonymous 

     

     

  • Skiers on 12/21 saw 2 old avalanches while skiing in the Divide Peak Cirque. These avalanches likely happened near the end of the last storm cycle, 12/9. 

    From obs: "Saw evidence of two natural avalanches on southwest aspects (see photos). The age of these slides was hard to gauge based on our lack of recent snow."

  • Roller balls in Hyalite at 8000'. Photo: M. Zia

  • Skiers on 12/17 saw cracking while touring in Beehive Basin. Photo: E. Webb

  • From obs: "We were ice climbing on Mummy 3 and 4 yesterday and as we looked across the valley to Mount Bole, we could see evidence of avalanche activity on the NE aspect of the peak. It looked quite big in length but could tell a depth from that far away." Photo: R. Dorn

    Photo taken 12/14/23. Avalanche likely released the previous weekend, around 12/9/23. 

  • From obs: "We also saw some spectacular surface hoar- probably 1-2" tall in places with extremely sugary snow underneath" Photo: USFS Bozeman Snow Rangers

  • Got a view of the bowls behind maid of the mist and above twin falls today. Multiple natural wind slabs, up to size 2, on E and NE aspects, roughly 9500 ft. SS-N-R2D2-I.  My guess is they are roughly 48 hrs old.

  • A skier triggered avalanche on the SE face of Mt. Blackmore. Crown is marked.

  • On 12/11, skiers noticed this recent D2 avalanche on the E aspect of Blackmore. As they skinned up the SE meadow, they experienced three audible whumpfs. Photo: Eric H

     

  • From obs: "Yesterday 12/10/2023 at 0900, my climbing partner and I observed a clear crown line that extended throughout much of the east/ north east aspect of the bowl on Elephant Mountain. "

     

     

  • From obs: "Windier then I expected today at me d elevations adjacent to Bridger ... Photos show lots of wind transport during the day. Felt a few collapses while skinning."

  • From obs: 

    "On descent this new snow was touchy, and we observed 2 natural avalanches, max depth 15 cm, on the small end of size 1, F hardness, running less than 30-50m exclusively in new snow. (SS-N-R1D1-N)"

  • From obs: 

    "On descent this new snow was touchy, and we observed 2 natural avalanches, max depth 15 cm, on the small end of size 1, F hardness, running less than 30-50m exclusively in new snow. (SS-N-R1D1-N)"

Videos- Northern Gallatin

WebCams


Bozeman Pass, Looking SE

Snowpit Profiles- Northern Gallatin

 

Select a snowpit on the map to view the profile image

Weather Forecast Northern Gallatin

Extended Forecast for

14 Miles SE Gallatin Gateway MT

  • Today

    Today: A 20 percent chance of snow after 3pm.  Partly sunny, with a high near 31. West wind 9 to 14 mph, with gusts as high as 20 mph.

    Partly Sunny
    then Slight
    Chance Snow

    High: 31 °F

  • Tonight

    Tonight: Mostly cloudy, with a low around 17. West wind around 15 mph, with gusts as high as 21 mph.

    Mostly Cloudy

    Low: 17 °F

  • Friday

    Friday: Partly sunny, then gradually becoming sunny, with a high near 32. West southwest wind 14 to 16 mph, with gusts as high as 24 mph.

    Becoming
    Sunny

    High: 32 °F

  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 22. Breezy, with a south southwest wind 16 to 22 mph, with gusts as high as 32 mph.

    Mostly Clear
    then Partly
    Cloudy and
    Breezy

    Low: 22 °F

  • Saturday

    Saturday: Partly sunny, with a high near 34. Breezy, with a southwest wind 21 to 24 mph, with gusts as high as 34 mph.

    Partly Sunny
    and Breezy

    High: 34 °F

  • Saturday
    Night

    Saturday Night: A 20 percent chance of snow.  Mostly cloudy, with a low around 28. Breezy, with a southwest wind around 23 mph, with gusts as high as 34 mph.

    Slight Chance
    Snow and
    Breezy

    Low: 28 °F

  • Sunday

    Sunday: A 30 percent chance of snow, mainly after 11am.  Mostly cloudy, with a high near 36. Breezy, with a southwest wind 21 to 23 mph, with gusts as high as 37 mph.  Little or no snow accumulation expected.

    Chance Snow
    and Breezy

    High: 36 °F

  • Sunday
    Night

    Sunday Night: A chance of snow.  Mostly cloudy, with a low around 29. Breezy, with a south southwest wind 24 to 26 mph, with gusts as high as 40 mph.

    Chance Snow
    and Breezy

    Low: 29 °F

  • Monday

    Monday: Snow.  Patchy blowing snow after 5pm. Cloudy, with a high near 31. Breezy.

    Snow and
    Patchy
    Blowing Snow

    High: 31 °F

The Last Word

A recent article, As radio use spreads in backcountry, so do community channels, describes the benefits of communicating amongst groups in heavily trafficked areas. 

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