Schuykill Avalanche

CB Avalanche Center 2015-16 Observations

Location: Paradise Divide Area
Date of Observation: 03/27/2016
Subject: Schuykill Avalanche
Photo of skier triggered Schuykill avalanche as seen from across valley..
IMG_0812

Schuylkill Avalanche

CB Avalanche Center 2015-16 Observations

Location: Paradise Divide Area
Date of Observation: 03/26/2016
Name: 2nd hand report
Subject: Skier caught in avalanche, Schuylkill Ridge
Aspect:
Elevation:

Avalanches: 2nd hand report. Multiple skier triggered avalanches on east to northeasterly aspects. One skier caught but not completely buried in an estimated D2 avalanche that ran 1,000ft. Estimates put the crown at 18″ deep, 40ft wide before entraining more snow lower down slope and failing on the 24th melt-freeze crust.

Mt. Emmons

CB Avalanche Center 2015-16 Observations, Snow Profiles

Location: Kebler Pass Area
Date of Observation: 03/26/2016
Name: Seth Beers
Subject: Mt. Emmons
Aspect: South East
Elevation: 12250′

Avalanches: Old crown – likely from mid-week storm on bowl just to lookers right of Green Lake on Mt. Axtell – R2.5, D2
Weather: Cloudy with periods of clear sky. Light winds from both SW and NW with blowing snow at ridge lines.
Snowpack: See Avanet pit profile attached. HST varied fro 5 cm to 20 cm throughout tour depending on elevation and exposure to wind transport with MFCR sandwich in the top portion of the snowpack. HST was unconsolidated and temps seemed to stay cool today to prevent moisture buildup on SE aspect – maybe down to ~10K’. Descended at ~330 pm.

Did see a repeated CTH results just below the DH layer below an ice layer but think this was due to isolating the column in the test. During my tour and I never punched blow the early March MFCR that sits below the recent storm layers.

03.26.16-obs

Copper creek

CB Avalanche Center 2015-16 Observations

Location: Paradise Divide Area
Date of Observation: 03/26/2016
Name: Zach guy
Subject: Copper creek
Aspect: North, North East, South East, South
Elevation: 9,000- 11800

Avalanches: Decent visibility and no fresh avalanches observed in this area.
Weather: S-1, overcast, calm to light winds with no transport at ridge top. Cool temps.
Snowpack: Below tree line, storm totals ranged from 3″-6″, low density, and no concerns except small sluffs. As we increased elevation towards East Maroon Pass, storm totals reached 10″-15″ near and above treeline — a little slabbier due to wind affects , but minimal previous wind loading. Some minor cracking observed on steep rollovers at these elevations. No other signs of instability.

6am Gothic

CB Avalanche Center 2015-16 Observations

Location: Crested Butte Area
Date of Observation: 03/26/2016
Name: billy bar
Subject: 6am Gothic
Aspect:
Elevation:

Avalanches:
Weather: Wind let up and snow started up around 2 p.m. going to near midnight before stopping with even short periods of minor clearing, then cooling. Now calm with 8½” new snow and a dense 0.70″ water. Snowpack at 48½”. Cloudy and calm with no precipitation at the moment and none since midnight.
Snowpack:

Coneys

CB Avalanche Center 2015-16 Observations

Location: Crested Butte Area
Date of Observation: 03/25/2016
Name: Will
Subject: Coneys
Aspect: East, North West
Elevation: 9,500-11,000

Avalanches:
Weather: Cloudy skies, colder temps, steady moderate winds with strong gust, light snow fall S1 with periods of heave snow S2.
Snowpack: 4in of new snow at the Washington Gulch TH at 8:30am. Strong wind out of the NW with snow transport off Mount Gothic and in the valley floor and most of the ranged was socked with snow all day. HS at 10,000 was 160cm to 190cm with new snow at 5-8′ with a short grapple event. Wind slabs ATL were starting to stiffen up at the top of coneys ridge about phone book in depth. E-NE slopes snow stayed dry and light with a boot pen only penetrating through the new snow stoping at the old MF interface. No major instabilities other that small Wins slab sluffs ATL.

Sluffing on Axtell

CB Avalanche Center 2015-16 Observations

Location: Crested Butte Area
Date of Observation: 03/25/2016
Name: Evan Ross
Subject: Sluffing on Axtell
Aspect: North
Elevation: NTL/BTL

Avalanches: New snow instabilities were the only problem observed. Sluffs certain on steep slopes near 40 degrees big enough to push you into unwanted hazards but not burry you.
Weather: cooler temps then previous day, overcast sky, on and off light snow showers. Not much for winds observed, but in thick timber most of the day.
Snowpack: Below any wind loaded areas there was about 4″ new over most recent dust layer (3/24). A soft crust was felt on yesterdays snow surface on low angled slopes near valley bottoms and on the only NE aspect observed at 11,600. Other more northerly slopes stayed dry. Once just below the ridgeline and onto all the slopes that previously avalanched back in late January, the snowpack had little structure, with mostly the same hardness throughout consisting of some form of rounding faceted particles. Quick obs didn’t reveal any concerning persistent slab structure. You could more likely find this structure on the very few parts of the slopes that hadn’t avalanched or maybe areas that have seen more wind loading in the last mouth (like in this ob). Once into the start zones boot pen was often to the ground when you broke through and old inch or two firm layer just below the new snow.

North aspects, tests continue to show propagation.

CB Avalanche Center 2015-16 Observations

Location: Kebler Pass Area
Date of Observation: 03/25/2016
Name: Jason Konigsberg
Subject: North aspects, tests continue to show propagation.
Aspect: North
Elevation: 11000

Avalanches: Long running Loose Dry avalanches running in Wednesday’s storm snow. These avalanches would entrain all of the storm snow and the latest dust layer would be visible on the surface. Loose Dry avalanches are not big enough to bury a person but could easily knock someone off of their feet.
No other avalanches, cracking, or collapsing observed.
Weather: Overcast with mostly light snow showers but a few bands of snow that were S2 (a little less than an inch an hour). Although it was windy on the road there was no wind near and below treeline. Temperatures were cooler today in the low-twenties.
Snowpack: All aspects have a surface crust from yesterday’s sun except for northwest to northeast. Northerly aspects that are near treeline have a faceted layer that is buried 2 feet down. An extended column test shows that there is potential for a fracture to propagate in this weak layer (see attached video).

Family Ski day at Snodgrass

CB Avalanche Center 2015-16 Observations

Location: Crested Butte Area
Date of Observation: 03/24/2016
Name: Dave and Ross
Subject: Family Ski day at Snodgrass
Aspect: North, East
Elevation: 9,600’-10,600

Avalanches:
Weather: Mostly sunny, light wind, mid 30’s for a high.
Snowpack: No signs of instability. Could feel the old layer with 4- 8 cm of new on top. Skiing was supportive and fast

Irwin Obs

CB Avalanche Center 2015-16 Observations

Location: Kebler Pass Area
Date of Observation: 03/24/2016
Name: Irwin Guides
Subject: Irwin Obs
Aspect: East, South, West
Elevation: 10,000 -12.000 ft.

Avalanches: some sluffing in ruby range, no significant activity, NE bowl of Owen may have slid mid storm, snow surface looked a bit roughed up, but covered by recent snow.
Weather: Winds less than 10mph most of day, but increasing last several hours ahead of next storm. Temperatures rose from single digits early to 18º on ridge and 29º at study plot. Trace snow accumulation. Low level stratus clouds built and dissipated most the day with increasing clouds last hour with flurries.
Snowpack: Cold powder this morning quickly transitioned to heavy moist snow in upper 12” of new snow. Easterly and southerly snow in lower 2/3rds of terrain most cooked. Cool west breeze minimized moistening in west facing terrain and UUWW for tomorrow, but still got moist. Snow safety routes this morning verified rapid stabilization of snowpack overnight, minimal windslabs and storm slabs all but disappeared. Early prefrontal red dust layer quite visible where cat has cut roads, cornices, etc. Simple hand shears continued to show failure 4cm above red dust in storm snow.