Regional Conditions for Northern Gallatin

as of 5:00 am
Oct 182″ | 10-20 W
Oct 17 0″ | 25-45 SW
Oct 16 0″ | 15-30 W
9980′     10/19 at 01:00
15.1℉
W - 17mph
Gusts 27mph
8100′   10/19 at 0:00
24℉
10″ Depth
Bottom Line: The expected snow and wind through the weekend will increase the chances of triggering an avalanche. Slopes that were dirt prior to the storm will not become dangerous with the new snow, but slopes above 8000’ harboring older snow will have the potential to slide. Slopes with dense, wind-loaded snow are inviting to ski and easy to ascend on skins or foot, however, freshly formed drifts will also be the most susceptible to avalanche.
Primary Problem: Wind-Drifted Snow

Past 5 Days

Thu May 2

None
Thu Sep 26

None
Thu Oct 3

None
Thu Oct 10

None
Thu Oct 17

None

Avalanche Activity- Northern Gallatin

Northern Gallatin
Hyalite Peak
Wind slab and dry loose in Hyalite
Incident details include images
Hyalite Peak
HS-N-R2-D1.5-O
Elevation: 9,650
Aspect: NE
Coordinates: 45.3810, -110.9610
Caught: 0 ; Buried: 0
More Avalanche Details
Northern Madison
Sphinx Mountain
Whumph on The Sphinx
Incident details include images
Sphinx Mountain
AF-O
Elevation: 9,000
Aspect: N
Coordinates: 45.1582, -111.4770
Caught: 0 ; Buried: 0

From e-mail on Saturday 10/5, climbers on the Sphinx found these conditions: "We found a lot of snow on the Sphinx today following heavy precip since Sam’s report two days ago [see photo]. 3-5 cm in the parking lot, 20 cm at the Sphinx-Helmet col. Moderate SW winds had created drifts almost a meter deep in places on the traverse to the ice routes on the north face. I backed off after a whumph on a particularly exposed section of the traverse. We tried different ledge systems above and below the normal approach route but found similar snow conditions throughout."

Photo: From 10/3 prior to 8-10" new snow, "No snow hazard of much concern on the approach. However, a quick hasty pit in an isolated wind pocket revealed a CT1 on this layer.  ice axe is to the ground."


More Avalanche Details
Bridger Range
Fairy Lake
Small wind slab near Fairy Lake
Incident details include images
Fairy Lake
SS-AS-R1-D1-S
Elevation: 9,000
Coordinates: 45.9043, -110.9580
Caught: 0 ; Buried: 0

From e-mail: "The only places one could ski were wind pockets blown into the limestone fin features that in places were well over a foot. These spots were also where the snow was weirdest/posed any sort of avalanche hazard as you pretty much had to find a wind slab in order to ski anything! One group reported triggering a slab in one of these spots, but vis was too poor to see."


More Avalanche Details

Photos- Northern Gallatin

Displaying 1 - 15
  • A local near Fairy Lake gets a taste of fresh October snow and wind. "You know it's somewhat windy when the goats start closing their eyes and their beards get blown sideways." Photo: B. VandenBos

  • Dry loose snow avalanches were observed on 10/10 as the recent snow settled. From e-mail "...saw some small, solar-initiated, dry loose snow slides in steep, rocky terrain (heads up ice climbers). With a firm surface beneath the new snow, these little guys were picking up steam quickly." Photo: B. VandenBos

  • Avalanche debris on the saddle near Hyalite Peak. This is indicative of the type of heavily wind loaded terrain near ridgelines where avalanches are most likely this time of year. Photo: B. VandenBos

  • Skiers on Thursday (10/10) morning reported, "touring up to Blackmore’s east face we found a shallow snowpack that is already showing a few widespread layers. The bottom 5-10cm was weak faceted snow overlaid by 5cm of a sun crust/Ice layer. On top was a few inches of new storm snow. We found the snowpack to be about 30cm’s deep in Blackmore’s east basin at around 9,000ft and above." Photo: C. Kussmaul

  • Broken off cornice on the saddle between Blackmore and Elephant on 10/5. "Snow was anywhere from inches deep with grass and rocks to hip deep. It was mostly knee deep though. Down in the flats below the bowl there was easily 8-10" fresh and another 2" on my way down..." Photo: @benjacobsenphoto

  • Ice Climbers on the Sphinx sent this photo from October 3, and noted,

    "No snow hazard of much concern on the approach. However, a quick hasty pit in an isolated wind pocket revealed a CT1 on this layer.  ice axe is to the ground." Photo: S. Magro

  • Wind transport of snow on Gallatin Peak, October 2, 2019. Photo: B. VandenBos

  • Early season snow on Hyalite Peak, October 2nd. Photo: B. VandenBos

  • MSU SAW is October 9th from 5-9pm in SUB Ballroom A. www.montana.edu/outdoorrecreation/SAW.html for more info.

  • The mountains got their first coat of snow at the end of September, though it isn't quite enough to protect you from hitting rocks. Where the snow is drifted provides the best coverage, but is also the most likely place to trigger a small slide. A small slide would be painful if it pushes you into the many exposed rocks. Photo: G. Antonioli

  • The mountains got their first coat of snow at the end of September. It isn't quite enough to protect you from hitting rocks. Photo: G. Antonioli

  • We hiked in to put up the Flanders weather station on 9/25 and found a spotty distribution of 4-6" of snow above 8,000'. Photo: GNFAC

  • Last weekend (9/23) there was about 14 inches of snow at 9,000'. Sun and warm temperatures created wet snow avalanches on slopes that face the sun. These small slides can be hazardous if they push you into the wrong terrain. Photo: Z. Drobnik

  • Last weekend (9/23) there was about 14 inches of snow at 9,000'. Sun and warm temperatures created wet snow avalanches on slopes that face the sun. These small slides can be hazardous if they push you into the wrong terrain. Photo: Z. Drobnik

  • Last weekend (9/23) there was about 14 inches of snow at 9,000'. Sun and warm temperatures created wet snow avalanches on slopes that face the sun. These small slides can be hazardous if they push you into the wrong terrain. Photo: Z. Drobnik

Videos- Northern Gallatin

WebCams


Bozeman Pass, Looking SE

Weather Forecast Northern Gallatin

Extended Forecast for

14 Miles SE Gallatin Gateway MT

Winter Weather Advisory October 19, 06:00am until October 20, 09:00am
Click here for hazard details and duration
Winter Weather Advisory
  • Overnight

    Overnight: Mostly cloudy, with a low around 22. Southwest wind around 17 mph, with gusts as high as 25 mph.

    Mostly Cloudy

    Low: 22 °F

  • Saturday

    Saturday: Snow, mainly after noon.  High near 32. South southwest wind 14 to 17 mph, with gusts as high as 25 mph.  Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Chance Snow
    then Snow

    High: 32 °F

  • Saturday
    Night

    Saturday Night: Snow. The snow could be heavy at times.  Patchy blowing snow. Low around 21. West wind around 17 mph, with gusts as high as 25 mph.  Chance of precipitation is 100%. New snow accumulation of 8 to 12 inches possible.

    Heavy Snow
    and Patchy
    Blowing Snow

    Low: 21 °F

  • Sunday

    Sunday: Snow likely, mainly before noon.  Mostly cloudy, with a high near 28. West wind 16 to 18 mph, with gusts as high as 26 mph.  Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    Snow Likely

    High: 28 °F

  • Sunday
    Night

    Sunday Night: Snow likely.  Mostly cloudy, with a low around 22. Southwest wind 10 to 14 mph, with gusts as high as 21 mph.  Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    Snow Likely

    Low: 22 °F

  • Monday

    Monday: Snow likely.  Mostly cloudy, with a high near 29. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Snow Likely

    High: 29 °F

  • Monday
    Night

    Monday Night: A 50 percent chance of snow.  Mostly cloudy, with a low around 29. New snow accumulation of less than a half inch possible.

    Chance Snow

    Low: 29 °F

  • Tuesday

    Tuesday: A chance of snow before noon, then a chance of rain between noon and 3pm, then a chance of snow after 3pm.  Mostly cloudy, with a high near 39. Breezy.

    Chance Snow
    then Chance
    Rain/Snow and
    Breezy

    High: 39 °F

  • Tuesday
    Night

    Tuesday Night: Snow likely.  Mostly cloudy, with a low around 27. Breezy.

    Snow Likely
    and Breezy

    Low: 27 °F

The Last Word

Get tickets for the 21st Annual Powder Blast Fundraiser on October 25th at The Emerson Ballroom.


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