Regional Conditions for Northern Gallatin

as of 5:00 am
Apr 302″ | N/A
Apr 29 3″ | N/A
Apr 28 4″ | N/A
9980′     04/01 at 03:00
61.5℉
NE - 0mph
Gusts 2mph
8100′   06/15 at 14:00
55℉
28″ Depth
Bottom Line: Avalanches will be mostly confined to new snow that falls. Shallow wet slides are possible if rain or warm temperatures melt the snow surface. Anticipate new snow stability to decrease with wind, sun or above freezing temperatures. Be aware of deeper wet slides if the snowpack doesn’t freeze overnight, or if there is heavy rain. Now is just as important as ever to be diligent with snowpack assessment and choose terrain carefully. See our forecast page for general spring snowpack and travel advice.

Past 5 Days

Fri Apr 19

None
Mon Apr 22

None
Fri Apr 26

None
Mon Apr 29

None
Thu May 2

None

Avalanche Activity- Northern Gallatin

Northern Gallatin
Mt Blackmore
Skier triggered slide on Blackmore
Incident details include images
Mt Blackmore
SS-ASc-R2-D2-I
Elevation: 10,000
Aspect: N
Coordinates: 45.4451, -111.0040
Caught: 0 ; Buried: 0

 From e-mail: "A ski cut at the top of the slope produced a soft slab avalanche (R2 D2 SS). The crown was 10" deep and 60' wide. Several other skiers had skied a line to the skiers right of our route with no obvious signs of instability or avalanches. No natural avalanches were observed with the exception of some small wet point release slides on the E face of Mt Blackmore."


More Avalanche Details

Photos- Northern Gallatin

Displaying 1 - 40 of 4.6116860184274E+18
  • Skiers triggered this avalanche on the north face of Mt. Blackmore on Sunday June 9th. Photo: C. Pruden

  • Skiers triggered this avalanche on the north face of Mt. Blackmore on Sunday June 9th. Photo: C. Pruden

  • Natural wet slabs were widespread on Fan Mtn. near Big Sky during the week of 5/13-5/16. Photo: E. Mullen

  • Natural wet slabs were widespread on Fan Mtn. near Big Sky during the week of 5/13-5/16. Photo: E. Mullen

  • This natural wet slab slid early this week, Monday (5/13) or early Tuesday (5/14), near Beehive Peak. This photo was taken 0745 Tuesday morning. Photo: @cfirer

  • This natural wet slab slid early this week, Monday (5/13) or early Tuesday (5/14). Photo: @wallace_casper

  • Debris from a wet slab that released naturally Tuesday evening on saddle Peak. Debris ran very far into the runout compared to similar sized dry slabs that often occur on this path. "South side of 1/4 Saddle slid sometime last night. Looks like cornice drop then step down to near ground. Hi yesterday at Alpine was 62." -R. Elliott/BBSP

  • This wet slab released naturally Tuesday evening on saddle Peak. "South side of 1/4 Saddle slid sometime last night. Looks like cornice drop then step down to near ground. Hi yesterday at Alpine was 62." -R. Elliott/BBSP

  • "South side of the Glide Plane released as a glide avalanche last evening (May 12th) sometime around 6 pm according to source. Bed surface was ground in starting zone of wet clay soil sparsely covered in long grass.  Debris chunks, some snowmobile sized, rode up on surface and slid approx. 200 vert.  Debris could have bumped a tower on the old Alpine lift if it still lived there. Last freeze was 6 am on the 10th of May.  The high temperature on the 12th was 59 degrees at 4 pm." Photo and observations: BBSP

  • "South side of the Glide Plane released as a glide avalanche last evening (May 12th) sometime around 6 pm according to source. Bed surface was ground in starting zone of wet clay soil sparsely covered in long grass.  Debris chunks, some snowmobile sized, rode up on surface and slid approx. 200 vert.  Debris could have bumped a tower on the old Alpine lift if it still lived there. Last freeze was 6 am on the 10th of May.  The high temperature on the 12th was 59 degrees at 4 pm." Photo and observartions: BBSP

  • Skiers found fresh wind slabs that were easily triggered on Saturday 4/27 near Beehive Basin in the northern Madison Range. Photo: E. Birkeland

  • Skiers easily triggered loose snow avalanches of the 3-5” of new snow. This morning (4/27) on the Bridger Ridge. Photo: @smooneyski

  • Skiers easily triggered loose snow avalanches of the 3-5” of new snow. This morning (4/27) on the Bridger Ridge. Photo: @smooneyski

  • 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

  • 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."

  • 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

  • Dry loose, wet loose, and dry slab avalanches on the east face of Mt. Blackmore. Photo: N. Salsburg

  • A skier in Hyalite found small but easy to trigger wind slabs at upper elevations near Mt. Bole in Hyalite. Photo: C. Kussmaul

  • A skier in Hyalite found small but easy to trigger wind slabs at upper elevations near Mt. Bole in Hyalite. Photo: C. Kussmaul

  • Photo: J. Dillon

  • Skiers in Hyalite saw a natural wet slab near Blackmore Lake. From the email: "The slide was located around 300 yards South of Blackmore Lake on a West facing slope at an elevation just above 7400 feet.  It broke below a cliff band about 3' deep (to the ground) and ran a few hundred feet (almost to the skin track)." Photo: JR Mooney

  • 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

  • This wet slab was observed on Friday (3/22) across the Sourdough canyon trail, about 1.4 miles up. It put 4-6 feet of debris lower down in the creek. Although small, a heavy wet slide like this can be powerful and very dangerous. Current warm temperatures are a shock to the snowpack, and steep slopes should be avoided if the snow is wet. Photo: P. Brown

  • This wet slab was observed on Friday (3/22) across the Sourdough canyon trail, about 1.4 miles up. It put 4-6 feet of debris lower down in the creek. Although small, a heavy wet slide like this can be powerful and very dangerous. Current warm temperatures are a shock to the snowpack, and steep slopes should be avoided if the snow is wet. Photo: S. Gill

  • This wet slab was observed on Friday (3/22) across the Sourdough canyon trail, about 1.4 miles up. It put 4-6 feet of debris lower down in the creek. Although small, a heavy wet slide like this can be powerful and very dangerous. Current warm temperatures are a shock to the snowpack, and steep slopes should be avoided if the snow is wet. Photo: S. Gill

  • A skier sent in photos of multiple loose wet avalanches near Mt. Blackmore yesterday. Photo: G. Antonioli

  • Recent dry slab avalanche that was triggered by a falling cornice and failed at the ground. Photo: G. Antonioli

  • 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

Videos- Northern Gallatin

Weather Forecast Northern Gallatin

Extended Forecast for

14 Miles SE Gallatin Gateway MT

  • This
    Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms.  Partly sunny, with a high near 59. North wind around 10 mph.

    Chance
    Showers

    High: 59 °F

  • Tonight

    Tonight: A chance of showers and thunderstorms before 9pm, then a chance of rain between 9pm and midnight.  Partly cloudy, with a low around 41. North wind 6 to 9 mph becoming southeast after midnight.  Chance of precipitation is 40%.

    Chance
    T-storms then
    Partly Cloudy

    Low: 41 °F

  • Sunday

    Sunday: A slight chance of rain, then showers likely and possibly a thunderstorm after noon.  Partly sunny, with a high near 55. Southeast wind 5 to 10 mph becoming north in the morning.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Slight Chance
    Rain then
    Showers
    Likely

    High: 55 °F

  • Sunday
    Night

    Sunday Night: A chance of showers and thunderstorms before 9pm, then a chance of rain between 9pm and midnight.  Mostly cloudy, with a low around 42. North wind 7 to 9 mph becoming southeast after midnight.  Chance of precipitation is 30%.

    Chance
    Showers then
    Partly Cloudy

    Low: 42 °F

  • Monday

    Monday: Showers likely and possibly a thunderstorm after noon.  Mostly sunny, with a high near 57. Southeast wind 6 to 10 mph becoming north in the afternoon.  Chance of precipitation is 70%.

    Mostly Sunny
    then Showers
    Likely

    High: 57 °F

  • Monday
    Night

    Monday Night: A chance of showers and thunderstorms before 9pm, then a chance of rain between 9pm and midnight.  Mostly cloudy, with a low around 43. Chance of precipitation is 30%.

    Chance
    Showers then
    Partly Cloudy

    Low: 43 °F

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 59.

    Mostly Sunny
    then Chance
    T-storms

    High: 59 °F

  • Tuesday
    Night

    Tuesday Night: A chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 42.

    Chance
    T-storms then
    Mostly Clear

    Low: 42 °F

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms after noon.  Sunny, with a high near 59. Breezy.

    Sunny then
    Slight Chance
    T-storms and
    Breezy

    High: 59 °F

The Last Word

Have a safe and enjoyable spring and summer. See you when the flakes start to fly next Fall! -Doug, Eric, Alex and Ian