Gothic 7 a.m. report

CB Avalanche Center2015-16 Observations

Location: Crested Butte Area
Date of Observation: 12/25/2015
Name: billy barr
Subject: Gothic 7 a.m. report
Aspect:
Elevation:

Avalanches:
Weather: 5:30 a.m: Snow started back up at sunset after a cold (high of 11F) Thursday. Steady all night with 7½” by 5:30 and water of 0.47″. Snowpack had dropped from 53 to 42″ but now back up to 47″. No wind yesterday and last night. billy

7:00 a.m.: Currently obscured with no wind and steady, moderate snow. Morning low was 6F and currently 11F. For the past 24 hours (including the ½” late yesterday() snow totals are 9″ new with 0.59″ water and snowpack at 47½”. –OK. I get it. It is winter now. You can let up for a while, thank you. billy
Snowpack:

Mountain Weather 12/25/15

CB Avalanche CenterWeather

Date: 12/25/2015

Merry White Christmas! A low centered over the Four Corners region is driving strong southwest flow and deep moisture into our region. The storm is on track to produce significant snowfall today, as a cold front and cold air advection create additional instability as the day progresses. A pulse that produced snowfall rates up to 4″ per hour in the San Juans is headed our way shortly, with a dryer slot in its wake.  Temperatures plummet tonight as flow swings more northerly. Light snow showers continue into Saturday.

Avalanches at Irwin

CB Avalanche Center2015-16 Observations

Location: Kebler Pass Area
Date of Observation: 12/24/2015
Name: Irwin Guides
Subject:
Aspect:
Elevation:

Avalanches: Overall, cold day, control/catch/prep day. 4 routes, multiple control teams, lots of explosives, only one persistent slab below Flaming (SS-AE-R2-D2-O). Cold temps may have locked snow down. Clear morning revealed total carnage in backcountry. Nearly all large or steep slopes at all aspects and elevations ran. Slide paths I haven’t seen run in the 4 seasons I’ve been here at least! Big Woody slid naturally, to ground.
Weather:
Snowpack:

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Slate TH Zone / Smith Hill Area

CB Avalanche Center2015-16 Observations

Location: Crested Butte Area
Date of Observation: 12/24/2015
Name: JSJ & Chris
Subject: Slate TH Zone / Smith Hill Area
Aspect: South West, West
Elevation: 10,600-9,300

Avalanches:
Weather: Mostly Clear to increasing clouds; cold; no wind
Snowpack: Recent storm snow, plus a few inches of cold low density snow on top overnight. HS around 70-110cms. Mostly all storm snow over either a thin MF crust capping facets in the bottom 5-10cms, or just storm snow lying over sagebrush. Still observing deep collapses and some shooting cracks, but less so then yesterday.

Slate River Avalanche Obs

CB Avalanche Center2015-16 Observations

Location: Crested Butte Area
Date of Observation: 12/24/2015
Name: Zach Guy
Subject: Slate River Avalanche Obs
Aspect:
Elevation: 9,000 ft.

Avalanches: Short tour up to Gunsight Bridge to view avalanche activity. Looks like most of Climax chutes ran mid storm. D2 to D2.5 debris piles, but crowns filled in. Two of the debris piles hit or came close to the summer lower loop trail. More crowns on Schuykill Ridge (E, NE aspects N/BTL), Augusta (S/SE aspect ATL), Mineral Point (E aspect ATL), and Purple (E Aspect ATL). Too far away to give much detail on the slides, but at least D2 in size.
Weather: Clear skies filled in by noon. Cold. No precip.  Blowing snow off of Scarp Ridge from SW winds, otherwise no transport.
Snowpack:

Avalanches from Red Lady

CB Avalanche Center2015-16 Observations

Location: Kebler Pass Area
Date of Observation: 12/24/2015
Name: Ben Pritchett
Subject: Red Lady
Aspect: South East
Elevation: 9,200′-12,400′

Avalanches: 10x D2’s or bigger:
Red Lady Bowl (D3)
Peeler Basin (D3), Peeler Peak south aspect
Red Lady Glades (D2)
East Bowl (Anthracites)
Augusta
Richmond…
Weather: White cheek kind of cold. Light blowing snow out of the West / South West.
Snowpack: Noisy! Booming, collapses breaking trail up Red Lady. 20-25cm settlement cones indicating rapid settlement. “Upside down” feeling with most of the settlement occurring near the snow surface.

Oh Be Joyful wilderness avalanches Red Lady Glades avalanches 2 Red Lady Glades avalanches remote trigger avy below Red Lady Bowl D3

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Mountain Weather 12/24/15

CB Avalanche CenterWeather

Date: 12/24/2015

We’ll see a brief lull in action this morning before the next Pacific wave moves in tonight. Winds will increase out of the southwest, gusting into the 40’s or 50’s above treeline. It is going to be a white Christmas. Deep moisture and strengthening jet support aloft arrive with the trough, bringing decent snowfall to our zone beginning tonight. Flow initially begins from the southwest, putting some uncertainty in our snow numbers, but as it shifts to the west-southwest, orographics become more favorable.  Look for 10″ to 15″ of new snow by the end of Christmas day in the mountains

Second hand avy obs

CB Avalanche Center2015-16 Observations

Location: Kebler Pass Area
Date of Observation: 12/23/2015
Name: Various
Subject: Second hand obs
Elevation: Various


Avalanches: “Lots of activity in the Washington Gulch area as well. Above and below Long Lake, road cuts, Baldy. Also wide propagation on Axtell (4th Bowl, Pencil) Red Lady, Climax Chutes”

“Hard telling in the light, but I’m on Emmons and looks like bowl went wall to wall on upper pitch. Storm slab only. Mid to late storm I think. Winds filling back in”

Large slides at Irwin

CB Avalanche Center2015-16 Observations

Location: Kebler Pass Area
Date of Observation: 12/23/2015
Name: Ian Havlick & Irwin Guides
Subject: Large slides at Irwin


Avalanches: It is pretty safe to say we have hit a critical mass. We have seen several natural slides to the ground in our terrain, as well as impressive explosive triggered slides in untrafficked terrain. Its full on out there. MAJOR AVALANCHES. East Barkmarker nearly went wall to wall from one single handshot full depth. NATURAL avalanches observed within our terrain in largely untrafficked areas included Crotch (SS-N-R4-D2.5-O- south facing 11,600ft), a deep pocket in Whiskey (south facing 11,000ft) and Sunny Shouder down low in skiers right half, as well as a pocket in Mean, all full depth to ground.
Weather: Scuddy, partly cloudy to overcast skies most of day with light snow. Light winds, and cool temperatures in low 20s. Heavy snow began 1500, continued through 1630, 2-3”/hr, whiteout visibility at times.
Snowpack: 4” of water last 9 days. Huge wind event last night Seeing 6-12 foot drifts on 70 Ridge this morning.

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Avy Obs

CB Avalanche Center2015-16 Observations

Location: Crested Butte Area
Date of Observation: 12/23/2015
Name: CBPSP
Subject: Avy Obs
Aspect: North, West
Elevation: 11,000′

Avalanches: Monument-SS-ASu-R2-D2.5-O
West Wall-SS ASc-R2-D2-O
Forest-SS-AE-R1-D1.5-O(Multiple)
Big Hole-SS-N-R2-D2-O
Horse shoe-SS-N-R1-D1-O
Weather: Slight clearing after first wave of storm w/moderate wind from the west,
Snowpack: HS of 47″ storm total of 27″ on the morning of the 23rd . W and N aspects that have not been boot packed, and have had moderate patrol traffic(including ski cuts and explosives work). Initial hand charges have not been as effective as ski cuts. On the 22nd there were multiple slides triggered after explosives w/ ski cuts running on an old snow interface at the ground. There was no cohesion in the snow pack but there was propagation up to 200′. ON the 23rd the wind had created more of a to slab on leeward aspects and become more reactive to explosives and ski cuts, but still more reactive to ski cuts in general.