22-23

Bacon rind-Ernie Miller ridge

Date
Activity
Skiing

Yesterday toured up Bacon rind on the spur just to the south of the Skillet, dropped west towards Ernie Miller ridge and skied two laps on the N end of the ridge. We travelled back to the car on the same route and skied out the skillet.

60-70cm HS observed on E aspect at the top of Bacon rind Ridge 

No Cracking or Collapsing observed all day 

Great supportable skiing, didn't fall through to facets anywhere 

pole probes felt uniform/generally right side up all day

1F zipper crust on the surface of anything solar

Region
Southern Madison
Location (from list)
Bacon Rind
Observer Name
Ty Guarino

Natural loose snow and rollerballs, Beehive and Bridger

Beehive Basin
Northern Madison
Code
L-N-R1-D1
Elevation
9700
Aspect
S
Latitude
45.35080
Longitude
-111.40000
Notes

Obs from Beehive 11/25: "Lots of moving snow on south facing aspects. most of the chutes to the [lookers] right of the (4th of July couloir) had slid, it looked like it was mostly limited releases from sun warmed rocks."

GNFAC Forecaster at Bridger on 11/25 saw natural rollerballs and pinwheels on steep, rocky south facing terrain. (photo).

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Loose-snow avalanche
Trigger
Natural trigger
R size
1
D size
1
Problem Type
Wet Snow
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Loose snow slides in Beehive

Beehive Basin
Northern Madison
Code
L-N-R1-D1
Elevation
9500
Aspect
SW
Latitude
45.34070
Longitude
-111.39100
Notes

From IG message: "We saw a few decent sized point releases in the same zone on Sunday, 11/20, the day after the wind slab. All occurred on SW aspect within approx 15 min at 2:30. The air temp rose noteably shortly before and the sun was baking the SW aspect."

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Loose-snow avalanche
Trigger
Natural trigger
R size
1
D size
1
Problem Type
Loose Dry
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

GNFAC Avalanche Forecast for Sun Nov 27, 2022

Snowpack and Avalanche Discussion

<p><span><span><span><span><span><span>Strong west-southwest wind is drifting new snow into dense slabs which are the main avalanche concern today. These fresh drifts can avalanche under the weight of a person, could be large enough to bury someone, and can easily carry a person down a steep slope. If you travel in steep terrain, assess the stability of new snow and fresh drifts, and avoid drifts of any size on slopes that end in cliffs, thick trees or confined gullies.</span></span></span></span></span></span></p>

<p><span><span><span><span><span><span>Over the last week, new snow followed by moderate to strong wind created drifts that were triggered by skiers (</span></span></span></span></span></span><a href="https://www.mtavalanche.com/node/26929"><span><span><span><strong><span… caught and carried</span></span></u></span></strong></span></span></span></a><span><span><span><span><span><span>, </span></span></span></span></span></span><a href="https://www.mtavalanche.com/node/26923"><span><span><span><strong><span… triggered wind slab</span></span></u></span></strong></span></span></span></a><span><span><span><span><span><span>), and on high northerly slopes a few avalanches broke on weak layers near the bottom of the snowpack (</span></span></span></span></span></span><a href="https://www.mtavalanche.com/node/26883"><span><span><span><strong><span… Peak avalanche</span></span></u></span></strong></span></span></span></a><span><span><span><span><span><span>, </span></span></span></span></span></span><a href="https://www.mtavalanche.com/node/26938"><span><span><span><strong><span… avalanche on deeper weak layers at Big Sky</span></span></u></span></strong></span></span></span></a><span><span><span><span><span><span>). Although less likely, avalanches could break below the 4-10” of snow that fell earlier this week. If you plan to ski or ride on steep slopes, dig down a couple feet to assess older weak layers.</span></span></span></span></span></span></p>

<p><span><span><span><span><span><span>Today, human-triggered avalanches are possible and the avalanche danger is MODERATE.</span></span></span></span></span></span></p>

<p><span><span><span><span><span><span>If you get out, please share avalanche, snowpack or weather observations via our </span></span></span></span></span></span><a href="https://www.mtavalanche.com/node/add/snow_obs"><span><span><span><stron…;, email (</span></span></span></span></span></span><a href="mailto:mtavalanche@gmail.com"><span><span><span><strong><span><u><span>…;), phone (406-587-6984), or Instagram (#gnfacobs).</span></span></span></span></span></span></p>

<p><span><span><span><span><span><span>Near Island Park, strong wind will drift 2-4” of new snow into dense slabs. If you travel in steep terrain, assess the stability of new snow and fresh drifts, and avoid drifts of any size on slopes that end in cliffs, thick trees or confined gullies. If you plan to ski or ride on steep slopes, dig down a couple feet to assess older weak layers.</span></span></span></span></span></span></p>

Upcoming Avalanche Education and Events

Our education calendar is full of awareness lectures and field courses. Check it out: Events and Education Calendar.

Blackmore

Date
Activity
Skiing
Snowboarding

Took a lap on the skiers left side of the east face of Blackmore. Didn't see any wind slabs or signs of instability. Wind wasn't really ripping too much. Went along the east ridge a bit and dropped some cornices on an east facing slope that drains to Blackmore Cr. Nothing ripped out besides new snow (about 5" of unconsildated dry pow). The snow on that slope didn't appear to be wind affected either. We did observe weak sugary snow at the ground below the denser snow at the bottom of the pack on high N to E facing slopes.

Region
Northern Gallatin
Location (from list)
Hyalite - main fork

Toured to the ramp and Bradley's Meadow on 11/25 around noon. Temperature was 45 F and wind was calm. Snow surface was moist 5-10cm deep on most slopes. The snow surface on shady slopes above about 8,000' remained dry, despite temperatures above freezing at all elevations. Natural rollerballs and pinwheels on steep, rocky southerly slopes around 7,800'. Photo: GNFAC

Bridger Range, 2022-11-26

No Signs Instability- Bacon Rind

Date
Activity
Skiing

Skied bacon rind skillet & one gulley just south of it today

No avalanche activity, cracking or whumphing 

No wind today up to 9000’; no evidence of recent wind-drifted snow

No new snow; Snowed s-1 all morning with no real accumulation (trace)

Average HS 60 cm at Skillet ridge top (approximately 9000’); 70 cm max depth 

Faceted surface snow on cold aspects (skied well) and 3 cm thick crust on anything remotely solar

Dug one quick pit on E aspect at 8840’:

HS 60 cm

CT 13 Q3 down 17cm

CT 23 Q3 down 25 cm

ECTN 24 down 30 cm

 

 

 

 

Region
Southern Madison
Location (from list)
Bacon Rind