Touchy storm slabs and cornices on Schuylkill

CB Avalanche Center2016-17 Observations

Location: Paradise Divide Area
Date of Observation: 01/03/2017
Name: Zach Guy
Subject: Touchy storm slabs and cornices on Schuylkill
Aspect: North, North East, East
Elevation: 9,000 – 11,400 ft

Avalanches: 2 natural slab avalanches on NE aspects NTL, a D2 and D1.5. From the ridgeline, about 6 soft slab avalanches were skier triggered, ran on the storm interface, 1 to 2 feet thick. Most failed on buried surface hoar, a couple also failed on near surface facets. Two were D2 in size. The largest propagated 600 feet across a slope and down a ridgeline, and ran 800 vertical feet, about 18″ deep. Cornices were also touchy; we easily triggered 3 or 4 from a distance, and it looked like one failed naturally or was triggered by a group in front of us.  Skier triggered some minor pockets on steep rollovers below treeline, failing on surface hoar layer 8-10″ deep.
Weather: S-1 to S1, about 2″ of accumulation. Moderate SW winds and snow transport, with brief gusts of intense transport. Overcast skies.
Snowpack: ~10″ of storm snow below treeline.  Storm slabs up to 3 ft thick near treeline, up to 4F in hardness in heavily windloaded features. Observed several shooting cracks an one muffled collapse. Storm interface is either near surface facets or surface hoar, varies from slope to slope.

Skier triggered soft slab, ~600 feet of across and down ridge propagation. Skier top right for scale. SS-AS-R2-D2-I.

SS-AS-R2-D2-I

Touchy cornices. Give em a wide berth.

D1.5 soft slab. NE aspect NTL.

Checking out an 18-24″ crown on a north aspect NTL. Failed on surface hoar.

Natural D1.5 soft slab. NE aspect NTL.

Large cornice fall….looked to be skier triggered by group in front of us.

Buried surface hoar: Culprit weak layer in a lot of the slides observed today.

Minor cracking and small slabs below treeline, on surface hoar

Natural on Climax Chutes, debris hit valley floor. SS-N-R1-D2-I

Natural on Climax Chutes. SS-N-R1-D2-I

Shooting crack. 50 feet long. 2 to 3 feet deep. Not quiet steep enough to slide.

Booyah

CB Avalanche Center2016-17 Observations

Location: Paradise Divide Area
Date of Observation: 01/03/2017
Name:
Subject: Booyah
Aspect: North East
Elevation: BTL

Avalanches: none seen but vis was spotty, got one wind loaded pocket 16 inches deep 30 feet wide to pull out on a 35-degree slope but didn’t go anywhere due to terrain characteristics.
Weather: snowing off and on, at times rather heavily. wind gusts out of the southwest transporting snow and loading top of rollers with wind lips forming in areas higher in basin
Snowpack: ski pen 16-18 inches, light and fluffy but dense and compacted in more open areas

Gothic 7 a.m. report

CB Avalanche Center2016-17 Observations

Location: Crested Butte Area
Date of Observation: 01/03/2017
Name: billy barr
Subject: Gothic 7 a.m. report
Aspect:
Elevation:

Avalanches:
Weather:
Snowpack: OK. I did not go out at 5:30. Sorry. Got tired of it- wallowing around in the dark trying to figure out if there was snow. –And there is with 10″ new (6″ overnight) and 0.66″ of water content. Snowpack is at winters deepest of 50″. Currently overcast with light snow and 17F. Only a light wind but every once in a while a gust to remind us of how miserable it will be when the wind starts back up. billy

Mountain Weather

CB Avalanche CenterWeather

Date: 01/03/2017

Radar at 4:30 this morning is showing a nice pulse of snow over Western Colorado, with a relatively dry swath of air upstream across Utah and Nevada under zonal flow. Heavy precipitation has moved onshore over California. Snowfall rates will wind down through the day as this current pulse ejects to our east and the jet stream splits around Colorado. The jet the realigns our direction tonight, packing abundant moisture on a direct flight from the Pacific, coupled with a cold front swinging north to south across the state on Wednesday. Still some model waffling as to how these dynamics line up, but tomorrow looks very impressive. Snowfall totals between now and Wednesday night look to exceed 20″.

Irwin wind slabs

CB Avalanche Center2016-17 Observations

Location: Kebler Pass Area
Date of Observation: 01/02/2017
Name: Irwin Guides
Subject: Irwin wind slabs
Aspect:
Elevation:

Avalanches: A few small windslab avalanches on ski cuts D1’s 20-30 cm’s deep, 1 slide 50 cm’s but on a very loaded convexity in Moonrise R.
Weather: Snowing throughout the day with strong SW winds and extreme gusts up high.
Snowpack: Still feeling old snow surface on some runs and new snow went from deep to scoured on same run in places! Isolated wind slabs in higher elevation west facing cross loaded features.

Touchy storm instabilities on Emmons

CB Avalanche Center2016-17 Observations

Location: Crested Butte Area
Date of Observation: 01/02/2017
Name: Zach Guy and Evan Ross
Subject: Touchy storm instabilities on Emmons
Aspect: North East, South
Elevation: 9000-11,600 ft

Avalanches: We skier triggered numerous soft slabs breaking on the storm interface near treeline, 10″ to 18″ thick, D1 to D1.5 in size, although one was in long, consequential terrain and entrained enough snow to be a D2. See photos. These broke in both wind affected and relatively wind-free areas. The latter slabs were somewhat surprising because the slab was so incohesive and didn’t produce signs of instability or results in column tests. Just enough of a very soft slab over fragile facets to propagate about 100 feet wide.
Weather: Overcast skies and S2. At ridgeline near treeline, Strong SW gusts with intense snow transport at times, with lulls of light winds between. Minimal transport or wind affect below treeline.
Snowpack: Below treeline: 6″ of low density snow over 1-2cm melt-freeze crusts over facets on southerlies and over near surface facets on northerlies. Shallow sluffing on steep terrain, no slab formation yet or signs of instability.

Near treeline: 12″ of low density snow in wind-sheltered areas; drifts up to 18″ thick, either on firm wind board or near surface facets on northerlies and meltfreeze crust over facets on southerlies. Moderate cracking in wind-loaded areas. No instabilities observed on a steep southerly aspect. Touchy storm instabilities on northerly slopes breaking on the storm interface.

NE aspect NTL. Wind slab near a cornice, quickly tapered in depth below the ridge. Ran on firm wind packed rounds (aka wind board).

Pink hat for scale.

NE aspect NTL. Small, skier triggered pockets in wind drifted features.

NE aspect NTL. Skier triggered soft slab, 12″ deep, on storm interface (near surface facets), in a relatively wind protected area.

Same crown looking up.

Same slide, pulled out more slab as it ran down. SS-AS-R2-D2-I

 

 

Skier triggered slabs on surface hoar

CB Avalanche Center2016-17 Observations

Location: Kebler Pass Area
Date of Observation: 01/02/2017
Name: Steve Banks
Subject:
Aspect: North, North East
Elevation: 10,500-11,200

Avalanches: Skier triggered 3 soft slabs on the SH layer. Each slide was 20-25 cms deep, near or below treeline, 20-40 feet wide, running very fast and far but the biggest was D1.5 at best. Interestingly the first one (7 Bowls) was remotely triggered from about 150′ uphill of the crown
3x SS-AS-R1-D1-I
Also notices extensive crowns in the craggy terrain above friendly finish (see photo). not great vis but looked fresh. Perhaps wind slabs releases this morning?
Weather: Light to moderate snow (S1 with period of S2) throughout the afternoon with very little wind near and below treeline. Chilly temps in the low 20’s.
Snowpack: 20-25cms of new snow, very light density with minimal slab formation. Reactive surface hoar layer under the new snow in both protected and open areas. SH resting on a very thin, ~4F temperature crust below todays new snow.

crown

Looking up at the slide

P1021460
P1021461
P1021462
P1021463

Anthracite Mesa-Coneys

CB Avalanche Center2016-17 Observations

Location: Crested Butte Area
Date of Observation: 01/02/2017
Name: ADB
Subject: Anthracite Mesa-Coneys
Aspect: North East, East
Elevation: BTL

Avalanches: NA. No instabilities.
Weather: S1 with 10 minute periods of s-1. Light winds from West and NW on ridge top. Minimal wind loading.
Snowpack: Between 10 and 15cm (4 to 6 inches) in past 24 hours. Cornice has developed over the main bowl.

Executive Director/ Lead Forecaster Job Announcement

CBACAnnouncements, News

The Crested Butte Avalanche Center (CBAC) is seeking to fill the positions of Executive Director and Lead Avalanche Forecaster to begin in the spring or fall of 2017.   The ideal candidate will fill both roles, but we encourage those interested in only one of the roles to apply. The Director/Lead Forecaster of the CBAC is a full-time, seasonal position. The incumbent will oversee all operations of the CBAC including the creation of avalanche advisories, avalanche education and outreach, fundraising, and collaborative efforts, while supervising employees, including other avalanche specialists.

The position is salaried for a 6 month season (October 15 through April 15), with some part-time work commitments required during the off-season.  Starting salary will range from $18,000 to $25,000, depending on qualifications and experience.  See below for job description and desired qualifications. For questions about the position or job qualifications, contact Zach Guy (zach.guy@gmail.com).  To submit an application, please send a complete resume, cover letter, and at least three references to cbavalanche@gmail.com.  Applications are due by February 3rd, 2017. Depending on availability of applicants, the position will begin in March of 2017 or October of 2017.

The Crested Butte Avalanche Center’s (CBAC) sole purpose is to prevent the loss of life, limb, and property to natural and triggered occurrence of avalanches in the backcountry surrounding Crested Butte. CBAC is a 501 (c) 3 non profit organization. The Crested Butte Avalanche Center is an Equal Opportunity/Affirmative Action Employer.

 

EXECUTIVE DIRECTOR  job description

  • Working with the Board of Directors, oversee, plan, and manage an operational budget.
  • Supervise and manage all staff (including forecasters and development director), recruit and hire staff, assign/schedule work, communicate performance expectations and evaluate performance to staff, develop performance improvement plans, resolve informal complaints, and ensure that subordinate staff are trained and coached to assigned work in accordance with job descriptions and expectations.
  • Plan and budget professional education and training opportunities for staff, including ISSW, CSAW, and other courses.
  • Write, acquire, and manage grants to fund projects and program work
  • Design sponsorship packages and requests and seek sponsorship opportunities by fostering relationships with local, regional, and national businesses and partners.
  • Lead in the organization, promotion, coordination, and execution of fundraising, outreach, and educational events.  Coordinate and meet with CBAC board of directors to plan, organize, or review events and fundraising.
  • Attend, present at, or set up booths at various events to enhance outreach, such as the outdoor industry films, info fairs, Avalanche Awareness Nights, and other public or non-profit events.
  • Establish and promote private donation opportunities through membership drives, meetings, events, website, and personal communication.  Seek to design or conduct new or alternative fundraising opportunities through events, grants, sponsorships, and donors.
  • Seek and produce new or progressive education or outreach opportunities or events for the public
  • Oversee and carry out office space rental and setup, and computer and internet support.
  • Oversee licenses, insurance, workman’s compensation, and other operational logistics.
  • Provide ongoing guidance, coordination, and training to staff and volunteers.
  • Oversee the purchase, licensing, insurance, maintenance, storage, and management of CBAC equipment, including snowmobiles, snow safety, and field equipment.

LEAD AVALANCHE FORECASTER job description

Minimum Qualifications:

  1. Bachelor’s or higher degree in a science related field.
  2. AIARE Level 3 certification, AAA AVPRO, CAA Level 2, or equivalent experience/certification.
  3. Three years of professional snowpack evaluation experience.
  4. Proven proficiency in weather forecasting, field observations, public communication, and computer skills.

Job Description:

  • Create and oversee the production of daily mountain weather and avalanche advisories/warnings for a large geographic area surrounding Crested Butte, CO.
  • Provide expert leadership and guidance in regards to analyzing the snowpack to direct and conduct field work and to oversee the development of avalanche advisories and avalanche warnings.
  • Design, prepare, and conduct training exercises for staff, including safety protocols, field work standards, and workshops in writing, weather forecasting, avalanche danger and problems, video production and editing, website design, and more.
  • Oversee and supervise the safety and quality of forecaster fieldwork by establishing safety and communication protocols for fieldwork.
  • Manage the “Pro Observers Program” and internship program.
  • Manage, analyze, and oversee the recording and maintenance of weather, snowpack, and avalanche data for producing and assessing the quality of forecasts, pattern identification, and scientific studies.
  • Manage and maintain CBAC’s website (www.cbavalanchecenter.org) and implement website improvements using a working knowledge of safety messaging and design, computers, internet applications, word processing, and spreadsheets
  • Create, edit, and manage messaging to the public through multiple media platforms including website, email, social media platforms, radio and phone recordings, and print.
  • Present at or lead in CBAC educational/ awareness classes or events to the general public using power points, videos, in-field demonstrations, and public speaking.
  • Facilitate and maintain CBAC’s collaboration and partnership with the Colorado Avalanche Information Center (CAIC) and the National Avalanche Center (NAC) through regular communication, data and information sharing, and more.
  • Manage informal collaborations and mutually benefiting partnerships between local ski resort and guiding operations.
  • Oversee the maintenance and operation of CBAC weather stations within the forecast area.
  • Write or contribute content to avalanche related articles in local, regional, and national newspapers, magazines, journals, and blogs.
  • Design and conduct research to improve forecast quality or promote the advancement of scientific understanding of snow and avalanches.  Seek to improve or integrate forecasts and safety messaging to the community via alternative or new methods.
  • Maintain and dispense to forecast staff a professional knowledge of snow physics including snow metamorphism, the distribution patterns of common weak layers, the mechanics of slab failure and classification of snow crystals by attending conferences, workshops, and reviewing literature, journal articles, conference proceedings, and other media.
  • Attend and/or review minutes and proceedings from industry related meetings, such as ISSW, National Avalanche Center, National Oceanic and Atmospheric Administration, and more to stay current with industry policies, standards, and updates.
  • Provide daily feedback on the accuracy and quality of staff-produced avalanche forecasts. Lead forecaster meetings and discussions between staff pertaining to avalanche concerns and forecasts.
  • Establish, maintain, and manage a study plot to aid in snowpack analysis and studies for solving avalanche problems.
  • Respond to avalanche incidents, conduct accident site investigations and interviews, and produce reports of avalanche accidents to industry standards.
  • Produce season-end summaries and reports including season snowpack and avalanche summaries and user statistics and reports.
  • Respond to media inquiries about avalanche conditions or accidents. Respond to avalanche related requests and inquiries, such as requests for recreational or professional training, educational presentations, feedback on publications, and more.
  • Coordinate the relationship with and production of newspaper, radio, and television broadcasts and public service announcements for avalanche information and warnings.
  • Oversees and review daily Skype meetings between CBAC and CAIC staff to ensure compliance, quality, and comprehension of forecast problems
  • During periods of dangerous avalanche conditions, monitor conditions throughout the day and communicate with CAIC to issue watches and warnings.  Relay avalanche watches and warnings through all media and public messaging outlets.
  • Analyze, evaluate, and verify raw meteorological, snowpack, and avalanche data from instruments and observations to write and issue daily public weather and avalanche advisories for regional snow stability and avalanche hazards.  Avalanche advisories include avalanche danger ratings for three elevation bands, avalanche problems (size, distribution, and likelihood), travel advice, and a detailed discussion.
  • Evaluate weather maps and models, weather forecast products, and data for producing daily mountain weather forecasts to be used in conjunction with avalanche advisories.
  • While working in harsh winter environments, use expert skills in snowmobile and alpine ski touring to travel through steep, avalanche terrain in order to conduct fieldwork and avalanche condition assessments.  Regularly operate snowmobiles and skis in deep powder, icy conditions, and difficult terrain, including but not limited to steep slopes, rough terrain, poor visibility, and areas with high avalanche danger.  
  • Perform basic repairs on snowmobiles. 
  • Observe, collect, and measure meteorological, snow, and avalanche phenomena with scientific equipment and instrumentation while traveling through backcountry terrain.  Conduct snow stability tests and record snowpack observations in the field to industry standards.
  • Publish snowpack, weather, and avalanche observations on CBAC and CAIC’s data platforms, including media, snow profiles, and video content for improved comprehension by the public. Film, edit, and publish videos pertaining to avalanche conditions.  
  • Analyze and review data to confirm and improve the accuracy and efficacy of daily forecasts and products.
  • Disseminate daily avalanche advisories through website, email, social media platforms, telephone, public radio, and other outlets.