Crested Butte Area

CBAC2014-15 Observations

Date: 12/27/14
Location: Red Lady Bowl (along with the rest of town)
Elevation: 9,000-12,400ft
Aspect: S/SE

Weather: COLD !!! -10F at TH at 0830. 11F back at TH at 1300. Slight inversion found up high, but felt minimal. Clear, except for cold air induced clouds clinging to summits on North faces. Light intermittent winds out of NE.

Snowpack & Avalanche Obs Surface snow was remaining dry on S/SE aspects and no evidence of yesterday’s thin melt-freeze crust was noticed as of 1230. Surface faceting already beginning to happen due to cold temps. Xmas storm slab seemed a bit stiffer today then yesterday but still dry and low density on top. Noticeable and wide spread settlement cones seen on skin up through the forest. Also saw evidence of a few old natural slides low in Redwell Basin on steep S/SE aspects, running on Dec 13th interface it seemed. Some slight cracking in wind stiffened snow at ridge top, but no other instabilities found. Supportive ‘mid-pack’ seems to begin to disappear around 11,000′ on down to 9,000′ on shadier, colder aspects.

Mt. Owen avalanche

CB Avalanche Center2014-15 Observations

Name: Zach Guy and Evan Ross
Title: Mt. Owen avalanche
Location: Kebler Pass Area
Date of Observation: 12/27/2014
Aspect: North East, East
Elevation: 12,900 feet.

Avalanches: Checked out the avalanche on Mt. Owen that occurred around 12/22. It looks like there were 3 sympathetic slides (probably not connected), each about 600 feet wide, the largest of them running 1900 vertical feet into Robinson Basin. The crown was generally 100 to 150 cm deep, failed on December 13th facet layer, which was generally about 80 cm above the ground, except for the shallow rocky areas, where the layer was close to the ground (

Weather: Arctic cold!! Calm winds in the bowl, light snow transport off of the ridgetop. Few clouds.

Snowpack: 6 to 10″ of fresh snow from Christmas storm, over denser, wind stiffened surface left at the end of the Solstice storm. Minimal signs of instability in this new snow; just a few very thin and narrow slab releases and a handful of loose snow avalanches.

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Crested Butte Area

CB Avalanche Center2014-15 Observations

Name: ADB
Location: Gothic Road
Date of Observation: 12/27/2014
Aspect: North East, South East, West
Elevation: ATL, BTL, TL

Avalanches: Gothic Mountain: Observed loose snow slides on SE aspects emanating below all cliff bands. These slides occurred prior to last snowfall. Danger scale up to D2.
East of Gothic Townsite, observed one natural slab avalanche, that appeared to be an R2 on a west face ATL. . Could have occurred during last snow cycle. Too far to determine if it was hard or soft slab.
BTL on Snodgrass on east facing slope, observed one area with rollers.

Weather: Cold in the morning. Mostly sunny and no wind.

Mountain Weather for December 27, 2014

CB Avalanche CenterWeather

Date: 12/27/2014

Our mountains will see dryer conditions today with mostly cloudy sky’s as the slow moving low pressure trough flattens and heads east. This evening and tomorrow winds will increase as another low pressure system drop south and begins affecting central Colorado Sunday evening. This system will likely only bring light snowfall to our area, but a better snowfall producer may be in store for the middle of next week.

Crested Butte Zone

CB Avalanche Center2014-15 Observations

Name: ADB
Location: Coney’s
Date of Observation: 12/26/2014
Aspect: North East
Elevation: 9,600 to 10,600

Avalanches: Tested a short slope along the valley bottom on a convexity with slope around 30 degrees. No cracking or whomping resulted There were no signs of instability on the skin track to the ridge either. We observed a coyote cross the entire bowl, about 400 feet below the ridgeline and no avalanches resulted.

Observed natural loose slides along most of the Schuchyll ridgeline.. These slides emanated at cliff bands and were observed on east to southeast aspects. Appeared to be D2’s. Looked like they have occurred before the most recent snow.

Weather: Mostly cloudy with a slight breeze on the ridge. Visibility was excellent.

Snowpack: First ones in this area today. The skin track had less than 2 inches on it. Snow depths from recent accumulations (last 48 hours) ranged between 6 and 8 inches.

Crested Butte Zone

CB Avalanche Center2014-15 Observations

Name: Evan Ross
Location: Mt Emmons
Date of Observation: 12/26/2014
Aspect: South East, South
Elevation: 9,000 to 11,300

Weather: Mostly cloudy, a few S-1 snow squalls, calm wind at BTL and NTL elevations.

Snowpack: Enough solar today for a soft and thin sun crust to form on south slopes over 30 degrees. At 11, 300ft, HS 110, 12/13 interface was down 60cm. Sitting on top of that 12/13 sun crust interface was 10cm of F hard snow, likely NSF. Above this poor structure was the solstice storm and more recent storm events with a slab at its base of 1f to F at the surface. A very quick and singular test was CT14 RP on the NSF. No collapsing or other obvious signs to instability while traveling on these slopes up to 32 degrees. At 11,700ft and just above treeline on a SE ridge, there was no recent signs of wind transported snow in the last 24hr.

Mountain Weather for Monday, December 26th, 2014

CB Avalanche CenterWeather

Date: 12/26/2014

Snow will continue through most the day before tapering off slowly as the bulk of the system moves onto the Eastern plains. Temperatures will plummet as the skies clear and the -32 degree cold core of the passing storm creates widespread temperature inversions. Westerly winds should remain in the 10-15mph range, limiting wind transport of the new fallen snow. Expect to see more storminess early next week, and unsettled weather into the new year.

Coney’s

CB Avalanche Center2014-15 Observations

Name: Zach Guy
Title: Coney’s
Location: Crested Butte Area
Date of Observation: 12/25/2014
Aspect: North East
Elevation: BTL/NTL

Avalanches: Observed 3 or 4 recent avalanches running on the facet layer on North or Northeast aspects below treeline. About a foot deep, failing full width of their small paths, but small in destructive size (D1 to 1.5’s).

Weather: Surprisingly calm winds. No snow transport observed off of high peaks. Generally broken skies. Periods of heavy snow (S3 +) with lulls between snow pulses. About 5 or 6″ of new snow accumulated through the day.

Snowpack: New snow fell very low density and unaffected by wind. About 12-18″ of recent soft slab (fist + to 4F) over the Dec 13th facet layer, which is basically a faceted conglomerate of all snow prior to Dec 13th to the ground. Lots of collapsing when traveling low angle terrain, and a NE facing slope fractured wall to wall but didn’t slide…just spiderweb cracks down to the facet layer.

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Kebler Pass Observation

CB Avalanche Center2014-15 Observations

Name: Alex
Location: Kebler Pass Area
Date of Observation: 12/25/2014
Aspect: North, North East
Elevation: +/-11,000′

Weather: At noon at the Antracites snowmobile parking area it was snowing heavily with moderate winds from the southwest with about 20 cms new snow. Boot pen was about 40 cms, and the air temp was 15* F. As we skinned up, the snow came and went in squalls. At the top of the skin track the sky cleared a bit, We found 20 cms new snow at the top of short north and northeast facing runs, with a snow depth of +/-160 cms. The Dec. 21-22nd storm’s snow has become a slab under today’s new snow. We skied slopes up to 35* and had no collapses, cracking, or major sloughing. It was snowing heavily again when we left around 4 pm, but skies cleared as we came through the Y and towards CB on Kebler Pass.

Gothic 8am Observation

CBAC2014-15 Observations

Clouds moved back in (after all, one nice day a week is all one can expect) with snow starting after midnight.  Steady but light density snowfall with 5″ new and water 0.25″.  No wind and snowpack up to 28″.  Currently obscured, light snow and 16ºF.  New snow, being light and with no wind, is not yet having much effect on the snowpack ass of yet.   Billy Barr