Regional Conditions for Centennial Range

as of 5:00 am
Today0″ | N/A
Nov 11 0″ | N/A
Nov 10 0″ | N/A
8775′     4/02 at 23:00
27 ℉
NW - 6 mph
Gusts 9 mph
7750′   11/12 at 14:00
34℉
11″ Depth
Bottom Line: While the weather has been all over the place the last couple days, it hasn’t changed the big picture for the snowpack. Small avalanches breaking near the surface are the only concern. Stay alert for signs of instability such as recent avalanches or cracking/collapsing drifts. If the snow surface gets sticky and wet, be wary of small avalanches that could push you into rocks or off a cliff.

Snow Observations- Centennial Range & Lionhead

Centennial Range
Centennials - Idaho
Mt Jefferson

May 5, hiked up S. Duck creek to Mt Jefferson. There were quite a few wet natural slides from probably 2 weeks ago. The snow today, however, was very stable. I traveled/skied on the north and east aspects.

Full Snow Observation Report
Centennial Range
Hellroaring Creek
Hellroaring

Observed stable conditions, some pinwheeling and roller balls in the late afternoon on steep direct solar aspects, dry shallow pow on direct N. aspects above 8,000', consolidated melt freeze everywhere else. . Seems like a perfect melt-freeze cycle. Saw lots of highmarking on W. face of Jefferson, Reas Peak, and the Divide w/out slide activity or any movement in general on all but South Facing slopes, which were out of view.

Full Snow Observation Report
Centennial Range
Centennials - Montana
Hellroaring Basin / Mt. Nemesis

We found a 2.85m settled base at roughly 7,000’ elevation base camp of Hellroaring Powder Guides.
The temps have been cold, but warming into the high 20s, low 30s during sunny periods.
A sample snowpit showed a weak layer of concer at about 50-60cm below the surface, made of very small facets.
However, an ECT was non-reactive. No signs of recent avalanches in the basin were present. Hower, some debris piles from older slides were apparent in the larger runout zones on Mt. Nemesis.

Full Snow Observation Report
Centennial Range
Hellroaring Creek
Hellroaring
Incident details include images

Widespred slide activity from the last storm cycle, e.g. 2/14-2/18 ranging from E-NE to W. Aspects all elevations, creek bottoms slid at 7000' and peaks slide at 9800'. DEEP crownlines. From a dist. 4'-6', mostly in wind loaded terrain, micro-ridges, and corniced areas.

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Lionhead Range
Two Top
Twin Creek Snowmobile Trail (ID) Closed for Avalanche Danger

Liz Davey, Island Park District Ranger on the Caribou-Targhee NF, said that the Twin Creek Snowmobile Trail is closed because of avalanche danger!!

Full Snow Observation Report
Centennial Range
Hellroaring Creek
Hellroaring Hut Area

***This report was submitted by a guest from a recent hut trip***

2-13-19 0630Hrs 7700’ at hut, SW winds, mod. 14F, S2 Precip.

1300Hrs Test Pit at top of Pussyfoot, 200 degrees, slope angle 20, 7700 elevation, snowing S2, winds SW and variable and Mod, 14F: 205HS, CT 21 down 61cm; CT 23 down 75; CT 30 down 86. ECTX. We found a dense consolidated layer(k hardness) 12”++ deep, down 120CM and stopped digging there. Storm/wind slab gained energy around 1500Hrs. Many different layers in the top 60CM of the new snow, none of them particularly concerning.

On 2-14-19 0700Hrs At the hut: ,23F, and S2 for 24hrs past, with an estimated 18-24 HN24. SW winds Mod, variable at times. At 0900Hrs 31F, PP/graupel mixed, backing to S1. Barometer rising now. Snow surface had become heavy and dense. Touring out to Pussyfoot, we saw the west facing slope above the Hut around 8700’?? had a new slide with a 2-3 foot crown, possible 200 yards in length running up and over a ridge. Cloudy, foggy no photo taken. The same area where a “few more turns” happened? Wind loading and storm slabs present in areas.

Full Snow Observation Report
Centennial Range
Centennieals
Incident details include images

This was shared with me from one of our Fremont County Search & Rescue members. I have no further information.

Full Snow Observation Report
Centennial Range
Centennials - Idaho
Avalanche in the Centennials
Incident details include images

I saw this with my binoculars from several miles away. This is just west of Mt Jefferson and on a southeast facing slope.

Full Snow Observation Report
Centennial Range
Centennials - Montana
Hellroaring Canyon

Yesterday, I skied into Hellroaring Canyon with a group of 6 backcountry skiers staying the night at Hellroaring Hut. While guiding the skiers to the hut, we saw large deposits of avalanche debris in the bottom of major slide paths on west and southwest facing aspects of Mt. Nemesis. It appeared that some of these avalanches were roughly size 1 - 2.5. Numerous creek bottoms and cut banks had also avalanched into Hellroaring Creek. Even some very low angle NW facing gully features had been ripped out. Looking across the valley into the Blair Lake area, I noted only one very small slide on a steep, rocky aspect. I did not have a chance to dig a snow pit, but I did observe numerous huge “whoompfs” while ski touring, and it was obvious that the faceted layer underneath last week’s 6 inches of new snow was failing regularly.

Full Snow Observation Report
Centennial Range
Centennials - Idaho
Centennial Mountains between Reas and Taylor peaks
Incident details include images

We rode this area all day. No one in the group had ever ridden this area, so it was an exploitation day. I dug a pit on a S facing 10* slope at 8564’.
HS 144 with 6 distinct layers, everything above 60cm was fairly consistent, the bottom 60 was JUNK, all large grain facets that were very soft, with little to no cohesion. I was surprised by the failure I got at 132cm, it failed very easily on the shovel shear, and with a CT11. I got an ECTN17 also at 132cm, nothing else. I did a PST just for the sake of killing time at had a 15/end at the 60cm interface. If there is a large enough trigger I have no doubt that the current slab is capable of propagating, and if it does the slide will likely be big. We did not see any avalanche activity while riding or driving in.

Full Snow Observation Report

Avalanche Activity- Centennial Range & Lionhead

Bridger Range
Bridger Bowl
Wet loose at Bridger
Incident details include images
Bridger Bowl
WL-N-R1-D1
Coordinates: 45.8156, -110.9230
Caught: 0 ; Buried: 0

Several small wet loose avalanches were observed at Bridger Bowl on 11/5. 


More Avalanche Details
Bridger Range
Bridger Bowl
Small avalanches at Bridger
Incident details include images
Bridger Bowl
SS-AS-R1-D1
Coordinates: 45.8156, -110.9230
Caught: 0 ; Buried: 0

Small storm slabs triggered at Bridger Bowl on 10/26. From email: "slab formation appeared isolated to leeward sides of midslope terrain features and rollovers as well as at ridgetops". 


More Avalanche Details

Photos- Centennial Range & Lionhead

Displaying 1 - 20
  • "Lots of cracking up there this morning on fresh, mid elevation wind slabs"

    Photo: B. Nobel

  • "While skinning up to the top of Powder Park lift at Bridger, we had roughly 15' cracks propagate on an E/SE aspect. A snowpit showed roughly 8" of wind slab above a few inches of facets, on top of last week's rain crust." November 11, 2019.

    Photo: G. Lawrence

  • On November 8th, skiers found weak facets and surface hoar had formed during prior cold and dry weather. Keep an eye out for these weak layers if they get buried. Photo: B. VandenBos

  • On November 8th, skiers found weak facets and surface hoar had formed during prior cold and dry weather. Keep an eye out for these weak layers if they get buried. Photo: B. VandenBos

  • Wet loose avalanches at Bridger Bowl (observed on 11/5).

    Photo: G. Antonioli

  • We found sensitive wind slabs near ridgelines on Mt. Blackmore and evidence of recent cross-loading. Photo: GNFAC

  • Small storm slabs triggered at Bridger on 10/26. From email: "slab formation appeared isolated to leeward sides of midslope terrain features and rollovers as well as at ridgetops". 

    Photo: G. Antonioli

  • Large avalanche observed on 10/25 near Imp Peak in the Taylor Fork. Photo: B. VandenBos

  • Large avalanche observed on 10/25 near Imp Peak in the Taylor Fork. 

    Photo: B. VandenBos

  • 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

  • We put up the Lionhead weather station on Tuesday, October 8th. There was 4-6" of snow above 8,000'. Photo: GNFAC

  • 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

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

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

  • 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

Weather Forecast- Centennial Range

Extended Forecast for

10 Miles ESE Lakeview MT

  • This
    Afternoon

    This Afternoon: Cloudy, with a high near 31. Breezy, with a south wind around 23 mph, with gusts as high as 28 mph.

    Cloudy and
    Breezy

    High: 31 °F

  • Tonight

    Tonight: A slight chance of snow between 9pm and 11pm.  Cloudy, then gradually becoming partly cloudy, with a steady temperature around 28. South wind 11 to 18 mph becoming west after midnight. Winds could gust as high as 21 mph.  Chance of precipitation is 20%.

    Slight Chance
    Snow then
    Partly Cloudy

    Low: 28 °F

  • Wednesday

    Wednesday: Mostly sunny, with a high near 34. Southwest wind 8 to 14 mph becoming west northwest in the morning.

    Mostly Sunny

    High: 34 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 22. Southwest wind 9 to 13 mph becoming southeast in the evening.

    Partly Cloudy

    Low: 22 °F

  • Thursday

    Thursday: Mostly sunny, with a high near 36. South wind 9 to 14 mph.

    Mostly Sunny

    High: 36 °F

  • Thursday
    Night

    Thursday Night: Mostly cloudy, with a low around 27.

    Mostly Cloudy

    Low: 27 °F

  • Friday

    Friday: Mostly cloudy, with a high near 38.

    Mostly Cloudy

    High: 38 °F

  • Friday
    Night

    Friday Night: A chance of snow, mainly after 11pm.  Mostly cloudy, with a low around 25.

    Chance Snow

    Low: 25 °F

  • Saturday

    Saturday: A slight chance of snow before 11am.  Partly sunny, with a high near 30.

    Slight Chance
    Snow then
    Mostly Sunny

    High: 30 °F

The Last Word

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