Regional Conditions for Northern Gallatin

as of 5:00 am
Apr 300″ | NA
Apr 29 0″ | NA
Apr 28 0″ | NA
9980′     03/28 at 12:00
37.5℉
S - 0mph
Gusts 4mph
8100′   06/23 at 3:00
46℉
Depth
Bottom Line: Spring weather can be highly variable and create a mix of avalanche problems to watch out for. Snow conditions and snow stability can change drastically from day to day or hour to hour. Anticipate rapid change and plan accordingly. Plenty of snowfall over the winter with more spring snow to come makes avalanches possible into summer.

Past 5 Days

Mon Apr 19

None
Fri Apr 23

None
Mon Apr 26

None
Fri Apr 30

None
Mon May 3

None

Avalanche Activity- Northern Gallatin

Photos- Northern Gallatin

Displaying 1 - 40
  • From obs: 5/9/21: "Yesterday we went to check out the new snow in Beehive Basin... Looking down into the face of Peruvian, we observed a natural dry loose slide that released from the ridge... We observed an increase in wind speed throughout the morning, and a shift in wind direction from west to southwest in the early morning moving to west to north west by the late morning. The combination of variable and high winds with the amount of new snow available for transport created a noticeable increase in the hazard of wind slabs on all aspects we observed during the morning..." Photo: E. Schreier

  • From obs: 5/9/21: "Yesterday... While traversing... along the north ridge of 10602 [in Beehive], we triggered a small wind slab  that carried down into Peruvian, which then released another small wind slab on a northeast aspect of the face (photo). The crown height of this wind slab was measured at 60cm at it's deepest point, and approximately 30ft wide by 10ft long. Looking down into the face of Peruvian, we observed a natural dry loose slide that released from the ridge. We observed an increase in wind speed throughout the morning, and a shift in wind direction from west to southwest in the early morning moving to west to north west by the late morning. The combination of variable and high winds with the amount of new snow available for transport created a noticeable increase in the hazard of wind slabs on all aspects we observed during the morning..." Photo: E. Schreier

  • Small wet loose slide that a skier triggered, running over an older crown from prior days. East aspect, 10,000'. From 5/7/21. Photo: D. Britt

  • Photo of a large natural wet avalanche in Taylor Fork, NNW aspect around 9,000' elevation near Koch Peak, on 5/3/21. Photo: D. Britt

  • From email 5/2/21: "Small but plentiful wet snow avalanches in Cooke City today. Didn’t see any that were broke on a deeper scale." Photo: K. Goodyear

  • From obs: "I traversed the Bridger range yesterday (4/28/21). The alpine start was good and solid but I saw lots of recent avalanches that looked super wet, some that had broken a couple feet deep. Conditions were pretty stable until about 1300 when that most recent snow layer started to really want to slide on the crust. Once I was in the meadows between Baldy and the M, at about 1400, I started hearing/feeling really wet "whumps". Photo: J. Harrison

  • From obs: "I traversed the Bridger range yesterday (4/28/21). The alpine start was good and solid but I saw lots of recent avalanches that looked super wet, some that had broken a couple feet deep. Conditions were pretty stable until about 1300 when that most recent snow layer started to really want to slide on the crust. Once I was in the meadows between Baldy and the M, at about 1400, I started hearing/feeling really wet "whumps". Photo: J. Harrison

  • From obs 4/28/21: "Observed numerous natural wet loose slides probably occurring over the past 48 hours on NW-W-S aspects mid-elevation. Point releases from rock bands and couloirs shedding. Photo for example, which shows W facing bowl with slides visible from US-89 in Paradise Valley. These are between 8500’ and 9500’ on an unnamed peak just northeast of Dexter Point." Photo: T. Benson

  • From obs (4/18/21): "...class split and dug three pits, one on NE, one on N, and one on NW at 7623'. HS averaged around 70 - 100 cms... The NE and NW facing pits showed rounding depth hoar and no sudden CT results. None of the ECTs fractured or propagated. The N facing slope still had preserved advanced depth hoar 3 mm in size (see image)..." Photo: J. Quinn

  • From obs 4/9/21: "...we saw widespread natural wind slabs on N-NE eastern slopes in the Northern Absarokas (photo). Winds increased throughout the morning, and evidence of wind transport became more apparent at higher elevations. We found that on aspects unaffected by wind loading, the new snow layer was not cohesive and only saw minor sluffing." Photo: E. Schreier

  • Skiers had a collapse which made this crack on a south facing slope with a shallower, wet snowpack around 9,000' near Cooke City. Photo: J. Redfield

  • This wet slab was reported on 4/4/21 around 8,200' elevation in the Main Boulder drainage south of Big Timber, outside of our advisory area. It happened that day or very recently during extended above freezing temperatures. Photo: G. Smith

  • This was a natural wind-slab avalanche releasing below the upper cliffs on Saddle Peak on March 28th. Photo: Anonymous

  • Natural avalanches on wind loaded slope occurred on 3/28/21 in Hyalite. Photo: B. Greene

  • Extreme winds on 3/28/21 transported snow that fell over the past week into fresh wind slabs. Photo: BSSP

  • Natural avalanche observed at the head of Flanders creek on 3/27/21. Photo: D. Britt

  • From obs: "Observed a small skier triggered slide on the middle ridge of MT Blackmore today, skier was cutting across when it released." Photo: C Crowe

  • Skiers triggered this 4-6" deep wind slab in Hyalite on 3/27/21. Click link below for more info.

  • From obs: "Deep slab avalanche in Blackmore Basin that appeared to break on the depth hoar near the bottom of the snowpack. It was on a wind loaded NE facing slope at approx. 9,500 and looked to break on a slope in the 35-40 degree range. The crown was about 8'-10' deep and 200' wide. It broke to the ground and ripped out several small trees." Photo: JR Mooney

  • From obs: "Skied Mount Blackmore today (3/27/21)... around 1 pm a skier remote triggered a deep slab from ~50 feet away (around the corner lookers right in the attached picture). Broke at the ground, 10-15feet deep, and took out a small tree." Photo: M. Lavery

  • From obs: "Skied Mount Blackmore today (3/27/21). Saw a natural avalanche on Alex Lowe peak just south of the Hellmouth...". Photo: M. Lavery

  • From obs: "Skied Mount Blackmore today. Saw... 4 skier triggered slides on the E face between the Blackmore and Alex Lowe Basins. Most appeared to be wind slabs... " Photo: M. Lavery

  • Ian and Dave stop to do a quick stability test as they hunt for a layer of weak snow 1-2 feet under the surface. Photo: GNFAC

  • 21 March 2021: A pair of skiers triggered this slide on the east face of Mount Blackmore. No one was caught. Photo: Anonymous

  • On Monday, March 22, skiers toured west of Blackmore Lake and observed a natural slide of the new snow below a cornice. Photo: E. Schreier

  • Skiers booting up the N Coulior of the Mummy (from Flanders), triggered this small 6" soft slab avalanche without consequence. Photo: H. Coppolillo

     

  • A pair of skiers were ascending the east-face of Alex Lowe Peak when they triggered an avalanche that broke 150' above them. One skier was caught and carried 250 vertical feet. No one was injured or buried.

  • A pair of skiers were ascending the east-face of Alex Lowe Peak when they triggered an avalanche that broke 150' above them. One skier was caught and carried 250 vertical feet. No one was injured or buried. Photo: Anonymous

  • From obs: "On our way up the summer trail route to Hyalite Peak our party of three remotely triggered a small avalanche from the skin track at around 9,600ft on a east facing aspect. The storm slab went about 4 inches deep and 150-200ft across a small roll over feature. We were about 150ft away when we triggered the slide." Photo: C. Kussmaul

  • Crown of deep slab avalanche on Arden Peak at the back of Maid of the Mist basin in Hyalite. Probably broke between Feb 22 and Feb 28, 2021 Photo: GNFAC

  • Deep slab avalanche on Arden Peak at the back of Maid of the Mist basin in Hyalite. Probably broke between Feb 22 and Feb 28, 2021 Photo: GNFAC

  • Deep slab avalanche on Arden Peak at the back of Maid of the Mist basin in Hyalite. Probably broke between Feb 22 and Feb 28, 2021 Photo: GNFAC

  • Deep slab avalanche on Arden Peak at the back of Maid of the Mist basin in Hyalite. Probably broke between Feb 22 and Feb 28, 2021 Photo: GNFAC

  • From obs 3/6/21: "Two large natural avalanches in Maid of the Mist Basin. One of them ran on the east face of Arden Peak (Peak 10,201) which propagated across the entire face. Could have been triggered by a cornice fall then stepped down to deeper layers. The second was on the NE face of the peak Fat Maid and Skinny Maid come from. Also propagated across the entire slope. Crown height between 6'-8' in most places." Timing of these slides is unknown. Probably in the last week, but maybe older. Photo: S. Enloe

  • From obs 3/6/21: "Two large natural avalanches in Maid of the Mist Basin. One of them ran on the east face of Arden Peak (Peak 10,201) which propagated across the entire face. Could have been triggered by a cornice fall then stepped down to deeper layers. The second was on the NE face of the peak Fat Maid and Skinny Maid come from. Also propagated across the entire slope. Crown height between 6'-8' in most places." Timing of these slides is unknown. Probably in the last week, but maybe older. Photo: S. Enloe

  • We saw these recent wet loose avalanches on 3/6/21. SW aspect, 9,100'. They likely ran during above freezing temperatures between 3/3 and 3/5. Photo: GNFAC

  • From obs: "Small D1 avalanche on south-eastern aspect around 7800ft. Looks like solar released on older layer a day or two ago."

    Photo: M. Mailly

  • From obs: "While touring above the canyon this morning, I noticed a very recent wet slide (would guess this incident occurred yesterday afternoon, March 4th). This was a skier triggered slide on a E aspect at an elevation of 7200. This slide was roughly 50 feet wide and ran about 50 feet, I estimated this crown to be 2-3 feet deep, slid all the way to the ground. This occurred below a steep roller."

    Photo: T. Saulnier

  • "Ran into this slide today. Tail end of Middle Basin. Seemed to have happened sometime in the last week (2/23-24). Most likely during the heavy windloading event. Seemed to run on very small facets we believe formed during the cold spell before the last big storm hit." Photo: S. Knowles
  • "On the drive back we saw a large crown on the NW face of Big Horn peak..." (likely broke Sat or Sun, 2/27-28). Photo:  S. Jonas

Videos- Northern Gallatin

WebCams


Bozeman Pass, Looking SE

Weather Forecast Northern Gallatin

Extended Forecast for

14 Miles SE Gallatin Gateway MT

  • Overnight

    Overnight: A 20 percent chance of showers.  Mostly cloudy, with a low around 52. Southwest wind around 6 mph.

    Slight Chance
    Showers

    Low: 52 °F

  • Wednesday

    Wednesday: A slight chance of showers before 7am, then a slight chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 70. Southwest wind 6 to 11 mph becoming west northwest in the morning. Winds could gust as high as 23 mph.  Chance of precipitation is 20%.

    Slight Chance
    Showers then
    Slight Chance
    T-storms

    High: 70 °F

  • Wednesday
    Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Partly cloudy, with a low around 51. West northwest wind 5 to 10 mph becoming light and variable. Winds could gust as high as 20 mph.

    Chance
    Showers then
    Partly Cloudy

    Low: 51 °F

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 67. West southwest wind 5 to 10 mph becoming northwest in the morning.

    Mostly Sunny
    then Chance
    T-storms

    High: 67 °F

  • Thursday
    Night

    Thursday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers.  Mostly cloudy, with a low around 46. North northwest wind 6 to 9 mph becoming east northeast after midnight.  Chance of precipitation is 40%.

    Chance
    Showers

    Low: 46 °F

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after noon.  Partly sunny, with a high near 61. North northeast wind 6 to 11 mph, with gusts as high as 18 mph.  Chance of precipitation is 40%.

    Chance
    Showers

    High: 61 °F

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 46. Northeast wind 5 to 11 mph becoming south southwest after midnight. Winds could gust as high as 18 mph.

    Mostly Clear

    Low: 46 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 65. South southwest wind 6 to 11 mph becoming north in the afternoon. Winds could gust as high as 21 mph.

    Mostly Sunny

    High: 65 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 48.

    Mostly Clear

    Low: 48 °F

The Last Word

Thank you to everyone that sent in observations, read the forecasts, took an avalanche class or donated money, time or gear. Our success is directly related to community support and the Forest Service. Have a safe spring and summer!