Natural in Redwell Basin

CB Avalanche Center2014-15 Observations

LOCATION: Crested Butte Area
DATE OF OBSERVATION: 02/05/2015
NAME: Jafar Tabaian
SUBJECT: Natural in Redwell Basin
ASPECT: South East
ELEVATION: Above Tree Line

AVALANCHES: Natural slide off SE (ish) face of Redwell observed from Coneys ridge. Assume this is a windslab but it could have been a wet loose slide.

WEATHER: Strong N-NW winds at start of tour, winds ceased in afternoon. Clear skies and very warm.

SNOWPACK: 3-5 inches of dense, wind affected snow over crust. Variable skiing. No signs of instability observed.

UPLOADS:

IMG_20150205_132418250_HDR

Natural slides around the Ruby Range and Anthracites

CB Avalanche Center2014-15 Observations

SUBJECT: Natural Slides – Ruby Range and Anthracites
DATE OF OBSERVATION: 02/05/2015
NAME: Zach Guy and Evan Ross
LOCATION: Kebler Pass Area
ASPECT: North East, East, South East
ELEVATION: Near/ Above treeline

 

AVALANCHES: Observed 11 fresh natural soft slab avalanches on E, SE, and NE aspects above treeline, mostly D1.5, and one D2. Averaged an estimated 1 to 2 feet deep, ranging from 30 feet to 600 feet wide, averaging about 50-150 feet wide, presumably on or above the Jan 30th interface. Ran in the last 36 hours. Also about 10 very small wet loose avalanches on south aspects near/above treeline from steep, rocky slopes.

  • 2x SS-N-R1-D1.5-U on Mt Owen’s E/NE face
  • 1xSS-N-R1-D1-U on Mt. Owen’s NE face
  • 1xSS-N-R1-D1.5-U on Mt. Afley’s SE face
  • 2x SS-N-R1-D1.5-U on Mt Richmond’s E and SE faces
  • 1x SS-N-R1-D1.5-U on Hancock Peak’s SE face
  • 2x SS-N-R2-D2/1.5-U in the Anthracite Range E aspect ATL (wide propagation, 600 feet?, happened today)
  • 2xSS-N-R1-D1.5-U off of Scarp Ridge, NE aspect ATL.
  • 10x WL-N-R1-D1-S various south aspects N/ATL
  • We skier triggered a fresh windslab on a SE aspect ATL. Up to 18″ deep, 30 feet wide, failing on mid-storm DF’s. SS-ASc-R1-D1-S

WEATHER: Moderate winds with strong gusts began to ease midday, with moderate snow transport in the morning. A high of 39 at 10k feet. Thin clouds, few to scattered.

SNOWPACK: Surfaces became moist on SE to SW aspects N/BTL in wind sheltered areas.

IMG_9106

1xSS-N-R1-D1.5-U on Mt. Afley’s SE face

IMG_9104

2x SS-N-R1-D1.5-U on Mt Owen’s E/NE face

IMG_9102

2x SS-N-R2-D2/1.5-U in the Anthracite Range E aspect ATL (wide propagation, 600 feet?

IMG_9098

skier triggered a fresh windslab on a SE aspect ATL. Up to 18″ deep, 30 feet wide, failing on mid-storm DF’s. SS-ASc-R1-D1-S

Windslab on east aspect of Red Coon that likely failed naturally on 2/2/15

Windslab on east aspect of Red Coon that likely failed naturally on 2/2/15

Mountain Weather February 5, 2015

CB Avalanche CenterWeather

Date: 02/05/2015

Some high cirrus clouds will stick around this morning as high pressure develops and drier air moves into the region. We will return to unseasonably warm temperatures again over the next two days, A series of Pacific waves will break down the ridge starting Friday night, bringing cooler temperatures and a chance for light snowfall.

Irwin Tenure

CB Avalanche Center2014-15 Observations

LOCATION: Kebler Pass Area
DATE OF OBSERVATION: 02/04/2015
NAME: Zach Guy
SUBJECT: Irwin Tenure
ASPECT: West
ELEVATION: 10,000-11, 500 ft.

AVALANCHES: Ski cut 3 soft, shallow windslabs, 3-6” deep, 10-40 ft wide, harmless in size, breaking on mid-storm layers. SS-ASc-R1-D1-S

WEATHER: 3″ of new snow through the day. 20 mph winds out of WSW, gusting to 48 mph. Moderate snow tranpsport; pretty significant loading onto NE aspects off of Scarp Ridge.

Crested Butte Area

CBAC2014-15 Observations

GUIDE(S): Jeff Banks
DATE: 20150202
ACTIVITY: BC Ski
LOCATION: Axtel
ELEVATION: 9,000-12,000ft
ASPECT: N-S-SW

WEATHER: Stayed cold under light to moderate breeze (Winds from North & West) & overcast sky.

SNOWPACK/AVALANCHE OBS: No Avy’s seen 1 collapse @ 12K S facing slope ~20*

Open ridgelines wind blasted Dense shady tree aspects holiding ~10-15cm of good snow on supportive base
southerlies holding very good supportive crust with ~15cm of dense new snow that stayed dry.

Mountain Weather February 4, 2015

CB Avalanche CenterWeather

Date: 02/04/2015

The Steamboat area is the only part of the state that caught snowfall last night. Unfortunately, the last few model runs have trended today’s snowfall further north with smaller accumulations for the Elk Mountains compared to yesterday’s models. With plenty of Pacific moisture being channeled into the northern part of the state under a northwest flow and improved dynamics arriving mid-morning, we could still pick up a few inches today in the favored parts of the zone around Paradise Divide and Schofield Pass. High pressure builds Thursday bringing dry and mild conditions through Friday.

Natural windslabs off of Mt. Owen

CB Avalanche Center2014-15 Observations

LOCATION: Kebler Pass Area
DATE OF OBSERVATION: 02/03/2015
NAME: Zach Guy
SUBJECT: Natural windslabs off of Mt. Owen
ASPECT: East, South, West
ELEVATION: Near/Above treeline


AVALANCHES: Flat light but I could make out two fresh debris piles off of the East face of Mt. Owen, about D1.5 in size, ran an estimated 1,500 feet. I’m assuming they were windslabs but couldn’t see the start zones.

WEATHER: Moderate WSW winds, with extreme gusts, with large plumes off of peaks and moderate snow transport. Light snowfall tapered mid-morning. Winds eased in afternoon. Broken skies all day.

SNOWPACK: About 4-5″ of dense, wind affected snow over the Jan 30th melt freeze crust. 1″ of new.

Mountain Weather February 3, 2015

CB Avalanche CenterWeather

Date: 02/03/2015

Another moist pulse under Northwest flow will drop a couple more inches of snow this morning followed by a short lull this afternoon. A significant shortwave slides into Colorado this evening into Wednesday, with a jet streak nosing into north/central Colorado tonight bringing gusty winds. Models are indicating the brunt of the action stays north of I-70, but this is the type of pattern where we might see a few inches in town and get surprised by a foot at Schofield or Kebler Pass. Fingers are crossed, snow dance moves unleashed. By Thursday, the high pressure ridge amplifies, driving the storm track north and east, bringing warmer and dry weather into the weekend.

Explosive triggered windslabs in Irwin Tenure

CB Avalanche Center2014-15 Observations

LOCATION: Kebler Pass Area
DATE OF OBSERVATION: 02/02/2015
NAME: Irwin Guides
SUBJECT: Explosive triggered windslabs in Irwin Tenure
ASPECT: West
ELEVATION: ATL

AVALANCHES: 4lb air blast in Lone Wolf removed new cross-loaded snow on the skier’s right. The D2 slide ran nearly full path on the old, wind-affected crust from 20150130, depositing debris up to 2m deep. Two 4lb air blasts in Ski Heroes produced a D1 slide consisting of new snow on the wind-scoured 20150130 interface. In Ski Heroes, a 4 lb airblast produced a D1 on a similar bed surface.