Snodgrass-quiet

Location: Crested Butte Area
Date of Observation: 02/09/2019
Name: ADB

Subject: Snodgrass-quiet
Aspect: North East, East
Elevation: BTL

Avalanches:

Weather: Obstructed skies and calm.

Snowpack: No cracking or collapsing on skin track out of Gothic. Snow felt very supportive and stable. Top 8 inches of snow is dense like Sierra but not deep like that snowpack. Poked ski pole down and couldn’t poke past the 8 inches of new snow from this week’s storm cycle.
Photos:

Natural activity from early Feb. storm

Location: Crested Butte Area
Date of Observation: 02/08/2019
Name: Eric Murrow

Subject: Natural activity from early Feb. storm
Aspect: North, North East, East, South East
Elevation:

Avalanches:

Avalanche activity was centered around near and above treeline slopes ( wind was key to this cycle) on north through southeast facing slopes. See photos below for a sampling of activity.

Weather: Clear day for a windshield and snowmobile tour of the greater area.

Snowpack: Only obs are from Cement Creek. Took drive around CB for pics and then ran snowmo out Cement Creek for a quick look around. Valley bottom near Hunter Creek had about 8 to 10inches of new snow, surprisingly little graupel mixed in. Near valley bottom structure was classic Persistent Slab with 1/16&1/18 snow creating a slab over weak garbage from early in the year.

Photos:

Elkton Study Plot visit

Location: Paradise Divide Area
Date of Observation: 02/07/2019
Name: Zach Kinler

Subject: Elkton Study Plot visit
Aspect: North East, East
Elevation: 9,000-10,400

Avalanches:

On drive from CB south observed 4 x D1 on E/NE aspects BTL. One on lower Red Mountain and 3 on Gibson Ridge.

Above Long Lake, 3 x D2 E aspect BTL. These ran in previous paths from early/mid January.

Blowing snow creating near whiteout conditions limited views of most avalanche paths.

Weather: Broken skies near town, Overcast skies up valley. Cold and windy with temps in the single digits. Moderate wind at valley floor with strong winds on ridges and peaks with off and on whiteout conditions.

Snowpack: 50 cm since 2/3 at Elkton Study plot, 10,400′. HS now 180 cm at this location. Ski pen 20 cm, Boot pen 53 cm. Recent snow is right side up with stiffer 4F slab from the beginning of the cycle underneath F hard snow from second colder wave.
Photos:

BRRRR Red Coon Glades Tour

Location: Kebler Pass Area
Date of Observation: 02/07/2019
Name: Travis Tucker

Subject: Red Coon Glades Tour
Aspect: South East, South
Elevation: 11,600’

Avalanches:

None observed
Weather: COLD . OVC. S-1 snow, and low visibility. Moderate to Strong winds with larger gusts all day. Moderate + wind transport.

Snowpack: Wind packed snow & stubborn storm slab.
PF 30. Heavy POW.
See images for structure and stability test.

Photos:

Irwin Cat Obs

Location: Kebler Pass Area
Date of Observation: 02/07/2019
Name: Eleven Cat Ski Guides

Subject: Irwin Cat Obs
Aspect: East, South East, South, South West, West
Elevation: 10-12,000ft

Avalanches:

Only a few minor results from ski cuts pulling out storm slabs in Way Long & R2 below
Sunset. Overall Storm slab/wind slab was stubborn to ski cuts, but reactive to Size 1s with explosives. No
visibility to observe surrounding terrain.

Weather: Unable to gain access to ridge cat drops; extreme winds, low visibility and wind chill
values shut us down! Cold day with strong to extreme gusts and temps intensifying around 11:00 throughout
the remainder of day. Skies went to BRK at 1630.

Snowpack: Morning started out similar to yesterday, but as winds increased the storm slab
stiffened dramatically through the day. Ski quality was stiff cream cheese with wind slabs lower on slope
that would stuff the relaxed, laid back skiers. Protected terrain held the most quality. We are now riding
the slab and skier penetration is decreasing dramatically.
Avalanche observations:

Photos:

Snodgrass tour & remote trigger

Location: Crested Butte Area
Date of Observation: 02/06/2019
Name: Dave Bumgarner

Subject: Snodgrass tour & remote trigger
Aspect: North East, South East
Elevation: 9,600 – 10,8000

Avalanches:

We had some whumphs & shooting cracks, Remotely triggered two slides on a SE aspect (photos attached).

Weather: LOCATION: Snodgrass Southern side (NE/E aspect)

ELEVATION: 9,600 – 10,8000

ASPECT: North East/ East

WEATHER: High around mid 20s, Overcast most of the day, Light wind bellow tree line. Precip S1 till around 1300

SNOWPACK/AVALANCHE OBS: HS ranges from 125 to 155 cm. Moderate results on two quick CT tests. We had some whumphs, Remotely triggered two slides on a SE aspect (photos attached).

Snowpack: SNOWPACK/AVALANCHE OBS: HS ranges from 125 to 155 cm. Moderate results on two quick CT tests.
Photos:

Anthracites storm instabilities

Location: Kebler Pass Area
Date of Observation: 02/06/2019
Name: MR

Subject: Anthracites storm instabilities
Aspect: North, North East
Elevation:

Avalanches:

Sluffs running far and wide, almost full track in rock, half track in tree, full track in big. Remote triggered baby bowl while skiing rock. All just the new snow.

Weather: Snowing S3, maybe harder at times. Surprisingly little evidence of overnight wind transport. Gusty at times, at times very calm. 8-12 inches new snow

Snowpack:
Photos:

Mount Emmons

Location: Crested Butte Area
Date of Observation: 02/06/2019
Name: TC

Subject: Mount Emmons
Aspect: South East, South
Elevation: 9,400-12,000

Avalanches:

Poor visibility, so none observed. Expecting a large natural cycle given the snow accumulation and high winds.

Weather: Snowing hard at times. Little to know wind at the trailhead and in the trees, but strong and steady (30+ mph) southwest winds near and above tree-line. Very limited visibility.

Snowpack: New snow in the 15-20 cm range being quickly blown into reactive soft slabs. Unusually large and sensitive cornices on the ridge near tree-line; kicked off a couple of the bigger ones with no reaction on the northeast facing slopes other than sloughing in the new snow. Below tree-line in the glades, the soft storm snow was resting on a firm sun crust in the more open terrain; the crust was less apparent lower down in the aspens.
Photos:

Its piling up

Location: Paradise Divide Area
Date of Observation: 02/05/2019
Name: Eric Murrow & Zach Kinler

Subject: Its piling up
Aspect: North, North East, North West
Elevation: 9,200-10,600

Avalanches:

Visibility was limited during day but got a few partial glimpses around higher elevation terrain and did not see any fresh signs of avalanches.

Weather: Winds were moderate with strong gusts at below treeline location. Decent drifts forming on road at valley bottom. Vis was so so for most of the day, but loading observed on open terrain. Precip consistent from 1030 to 3 but very light, accumulations less than an inch (rimed PP and graupel).

Snowpack: New snow accumulations (since Sunday night) at 1pm – 10600′ 33cm with 1.8″SWE, HS in this area around 225cm. Dug a test profile in this area down to below the 1/15 interface. Easy clean sheers in the middle of the new snow. ECTP13 on the new/old interface (2/2) on a thin layer of 1mm facets down 35cm at this location. No results on the 1/15 interface, even when hammering after standard tests. Did not dig to ground but Holiday slab and 1/16&1/18 slab mostly pencil hard. Skinning and stomping on tiny test slopes produced cracks up to a ski length within the storm snow.

Photos: