Irwin Tenure

CB Avalanche Center2014-15 Observations

LOCATION: Kebler Pass Area
DATE OF OBSERVATION: 01/30/2015
NAME: Irwin Guides
SUBJECT: Irwin Tenure
ASPECT: E, SE, S, SW, W
ELEVATION: 10,000-12,000

WEATHER: Steady light snow all day. high 23 at ridge top, 28 at lake. light east winds.

SNOWPACK: 2” fell warm and wet, which should hopefully help bonding to the widespread Melt-freeze crusts. Not enough snow to test that theory yet. Current surface is pretty well broken up with old frozen tracks, wind scallops, and/or new tracks in the breaker crust. Expecting snowfall amounts to be too small to develop reactive storm slabs, and also expecting decent bonding to the crusts and broken up surfaces. Could change if we see more snowfall than forecaster.

External Human Factors in the Backcountry

CBACAvi Blog

By Ian Havlick, Crested Butte Avalanche Center

You are standing on top of that virgin line, with that cold, crisp air blowing across your face, the squeak of the snow underfoot, the sun casting long, buttery shadows across your prospective line. The avalanche danger is rated considerable. You have that little high definition camcorder stuck to your helmet, and your two other buddies are peering over the steep line you all have worked all day to get up. Sound familiar?

Humans are inherently curious, emotional, and social creatures. We can study the snow with a microscope, wax poetic about theories on growth of snow crystals, fracture mechanics, blah blah blah. Snow and avalanches in a physical sense is solvable through cold labs, electron microscopes, slow motion cameras, and when all else fails…smart Swiss scientists. But, the human side of things…the emotion, lack of rationale, rushed decisions, and group heuristics is anything but clean cut. Ian McCammon P.hD., a very telented scientist and avalanche practioner, boiled down the bare bones of subconscious human decision making in the backcountry to six categories; Familiarity, Authority, Social proof, Commitment/consistency, Liking/conformity, and scarcity. This research was conducted in the late 1990s and early 2000s, not long ago in most people’s memories, but in the technological world, a decade is an eternity. Just thinking in Apple terms, the iPod was released in 2001. The iPhone released in 2007. These devices and many others we introduced a few years after these heuristic papers were presented and since then have skyrocketed in popularity, both in the front country, and the backcountry.

Now enter the GoPro. The seemingly generic name for all things photo, audio, and video capturing. You got the GoPro, the Contour, the Action Cam, the Air Pro, Parrot, the Hero, the JVC Flash Memory Recorder, the Phantom 2, the VIRB, the PivotHead, on and on they go. How do these little widgets effect our decision making in the backcountry?

IMG_7233

Graphic from a recent SIA study, presented at ISSW 2014 in Banff, AB.

This influx of technology has undoubtedly changed the way we operate in avalanche terrain.   Social media outlets such as Instagram is just kerosene on the already raging bonfire, especially among the 16-35 year old age bracket, statistically the age range which comprises a vast majority of avalanche fatalities across the globe. 65% of fatalities from 1951 to 2013 to be exact. Avalanche terrain + abundant powder + youth + bragging + proof of taking chances for said bragging = more close calls and ultimately, fatalities. Very little concrete GoPro-specific research has been done to date, but, if point of view (POV) videos of avalanche involvements are any gauge, the statistics may be staggering. Worth keeping in mind next time your standing on top of the primo slope asking your buddy if that little red light is blinking…

 

8am Observation from Billy Barr in Gothic

CBAC2014-15 Observations

Still really nothing to report with just a shallow 1″ of new snow overnight and 0.06″ water in it, barely covering the crust.  Snowpack is at 30½”.  It has been between 28-35″ since Dec. 25.  Currently overcast with off and on very light snow.  –There were 7 record high temperature days in January and so far 13 this winter (starting Nov. 01).  No record lows.  billy

Mountain Weather for Friday, January 30th, 2015

CB Avalanche CenterWeather

Date: 01/30/2015

A wobbling low pressure system near Baja will surge moist Pacific air northward today and tonight before high pressure from the north pushes drier, but not colder air, back into the area tomorrow evening. That pesky ridge over the west coast of California attempts to entrench itself once again but small, fast moving disturbances may give a few inches early next week.

Mountain Weather January 29, 2015

CB Avalanche CenterWeather

Date: 01/29/2015

Moisture streaming in from the southwest ahead of a closed low will keep mid to upper level cloud cover overhead for most of the day, under mild and calm conditions. Moisture deepens on Friday as the low moves onshore. With the favorable dynamics staying south, and a relatively warm system, we aren’t looking at a homerun with this one, but hopefully a base hit with 3-7″ in the mountains by sunset on Saturday. Flow shifts to a dryer northwest direction on Saturday afternoon and pushes the moist air out to our south.

Kebler Pass Area

CB Avalanche Center2014-15 Observations

LOCATION: Kebler Pass Area
DATE OF OBSERVATION: 01/28/2015
NAME: Zach Guy
SUBJECT: Kebler Pass Area
ASPECT: E, SE, S, SW, W
ELEVATION: 10,000-12,000 ft

AVALANCHES: None

WEATHER: Light graupel and gusty west winds tapered midmorning, with broken skies clearing to scattered. Minor snow transport in the morning.

SNOWPACK: Less than 1 cm of graupel fell this morning on widespread melt freeze crusts from the last 2 days of warm and sunny. These crusts exist on E, SE, S, SW, and W aspects at all elevations, of varying thickness. On a WSW slope at 11,500 feet, a couple handpits showed the new melt freeze crust about 2” thick and pencil hardness on average, supportive on skis, and up to 4” thick and supportive to boot pen where the slope tilted more SW. Everything in the hand pit was refrozen, no freewater.

UPLOADS:

avalanche on snodgrass

CB Avalanche Center2014-15 Observations

LOCATION: Crested Butte Area
DATE OF OBSERVATION: 01/28/2015
NAME: patrick donahue
SUBJECT: avalanche on snodgrass
ASPECT: North East, East
ELEVATION: 11,000

 

AVALANCHES: set off one slide that slid on old rain crust for 15 feet and then stepped down to the ground. ran approximately 200+ yards (from top to bottom of california bowl on snodgrass. crown was approximately 2 1/2 feet. bed surface was basel facets. no one was caught. propagated roughly 15-25 feet R1 D1+

WEATHER: partly cloudy around 32 degree F

SNOWPACK:

UPLOADS:

Mountain Weather January 28, 2015

CB Avalanche CenterWeather

Date: 01/28/2015

A weak disturbance passes to our north today, bringing a chance for an inch or two of snow under continued mild temperatures and some gusty winds. Thursday will be cloudy and warm as transient and weak upper-level ridge builds. We are happy to escort January out the door, but it might be leaving with a fight. A moisture-rich closed low moves across Arizona on Friday into Saturday. Models are currently showing favored snowfall for Southern Colorado, but those closed lows can wobble around like a drunk guy at the Talk of the Town. Lets hope it stumbles closer to the Elk Mountains.

Ruby Range

CB Avalanche Center2014-15 Observations

LOCATION: Kebler Pass Area
DATE OF OBSERVATION: 01/27/2015
NAME: Evan Ross
SUBJECT: Ruby Range
ASPECT: South, North West
ELEVATION: 11,000-13,000

AVALANCHES: Several recent loose wet avalanches on east and west aspects from the last 48 hours. A couple failed on these same aspects today. All of these avalanches where small, D1-1.5’s with a few D2’s in areas with lots of vertical relief.

WEATHER: Clear Sky over the Ruby Range and Elk Mountains. Clouds moving in from the west at the end of the day. Hot temps and no wind.

SNOWPACK: Alpine northwest slopes were a mixture of facets to the ground, near surface facets over a supportive slab, wind buff, or shallow hard wind slabs. The snow surface was cold and dry on this aspect all the way down to 10,800ft. On south and southwest aspects in the alpine the snow surface was wet for about 5cm and moist down 10-20cm deep on average, in the afternoon.

UPLOADS:

Slide on Mt. Baldy

CB Avalanche Center2014-15 Observations

LOCATION: Paradise Divide Area
DATE OF OBSERVATION: 01/27/2015
NAME: Fitz Young
SUBJECT: Slide on Baldy
ASPECT: North West



UPLOADS: