3/7 visible avalanches

CB Avalanche Center2018-19 Observations

Location: Crested Butte Area
Date of Observation: 03/07/2019
Name: Eric Murrow

Subject: visible avalanches with poor light

Avalanches:

Red ridge to WSC peak ridge had numerous slide. Unemployment Chute significant slide. Phoenix on Gibson ridge released really big for the path – trimmed fresh timber.  A glimpse into Red Lady Bowl looked like major bowl width slide. Climax failed impressively. Slope below and above SE end of Long Lake. Two paths on Whetstone between x chutes and Barcelona Bowl looked to have knocked down a few trees.  Several other deep crowns below treeline in strange spots. Vis was poor and it sure looked like there was destruction in other places with trees missing and skid marks in basins but could not see well enough to confirm maybe tomorrow.

Photos:

Red Lady Bowl Avalanche

CB Avalanche Center2018-19 Observations

Location: Crested Butte Area
Date of Observation: 03/06/2019
Name: Evan Ross

Subject: Red Lady Bowl Avalanche

Avalanches:

Red Lady Bowl ran naturally on Wednesday 3/6. The weather has made taking pictures of this avalanche difficult. This avalanche is estimated to have run close to 80% of its total potential avalanche path and was very large and destructive in size.

The pictures below are the toe of the avalanche debris and another avalanche that failed sympathetically on a steep SE facing slope. The crown of this sympathetic avalanche is estimated at 2.5ft and probably failed around the 2/28th interface.

Also, a couple small storm slab avalanches where seen along Kebler Pass Rd near Crested Butte. 5 to 6″ deep failing on 40 degree, northerly facing terrain.

 

Mountain Weather for 11,000ft

CB Avalanche CenterWeather

Date: 03/07/2019

A moisture rich and potent storm passed through last night and will continue into today. We will see winds and snowfall taper off toward sunset with a bit of a reprieve tonight before cooler temperatures drives more snowfall tomorrow and into the weekend. Expect snowy weather to continue into next week with the potential for high pressure to set up again middle of the work week.

  • Today

    High Temperature: 25
    Winds/Direction: West 15-25 G 30’s
    Sky Cover: Overcast
    Irwin Snow: 7-10″
    Elkton Snow: 7–10″
    Friend’s Hut Snow: 7-10″

  • Tonight

    Low Temperature: 16
    Winds/Direction: Southwest 10-20
    Sky Cover: Overcast
    Irwin Snow: 2-4″
    Elkton Snow: 1-3″
    Friend’s Hut Snow: 1-3″

  • Tomorrow

    High Temperature: 24
    Winds/Direction: Southwest 15-25
    Sky Cover: Overcast
    Irwin Snow: 5-7″
    Elkton Snow: 3-5″
    Friend’s Hut Snow: 3-5″

Roofalanche

CB Avalanche Center2018-19 Observations

Location: Crested Butte Area
Date of Observation: 03/06/2019
Name: Petar

Subject: Roofalanche
Aspect: North West
Elevation: 9440

Avalanches:

Weather: Stormy and quite warm – about 35 F, strong winds from the SW.

link to file: https://www.dropbox.com/s/mcm4dhz6xuixtqi/roofalanche.mp4?dl=0

The video was sped up, but it took about 25 min to record it, approximately around 3-3.30pm.

Snowpack:
Photos:

storm snow piling up

CB Avalanche Center2018-19 Observations

Location: Kebler Pass Area
Date of Observation: 03/06/2019
Name: Eric Murrow

Subject: storm snow piling up
Aspect: North, North East, East, South East, South, South West
Elevation: 9,200′ – 10,600′

Avalanches:

Numerous natural D1 storm slabs running within the storm snow. Above Kebler TH there was a D2 Persistent Slab that i would guess failed on the 2/28 interface on a SE aspect in the steep gully just below the RL skin track – roughly 3 feet deep crown. Two D1 avalanches on crossloaded SW facing features.

Weather: Consistent snow all day with s1 to s3 snow during the day. New snow mostly rimed PP transitioning to graupel by afternoon. Winds out of the SW were light with moderate gusting in AM, around 1PM winds picked up to moderate speeds with strong gusting. Lots of transport observed in the afternoon from SWerly winds. New snow total reached 13″ at 4pm. Snow was thick and became top heavy in the afternoon from warming temps and graupel precip.

Snowpack: Density change in storm snow was apparent from numerous hasty hand tests. Lots of sloughing with minimal cracking and propagation in new snow in the sheltered terrain we traveled.

Photos:

Mountain Weather for 11,000ft

CB Avalanche CenterWeather

Date: 03/06/2019

Boy oh boy, the next round of snow has arrived and it is looking pretty good. Snowfall started very early this morning and will continue through Thursday. The low-pressure system is still out in the Pacific but moisture is streaming into the area under southwest flow. Expect moderate snowfall today and tonight with a hard-hitting pulse tomorrow between 3am and 9am. Snowfall totals by Thursday afternoon will be 20 to 30+ inches. Winds will be strong starting from the southwest and moving more west by tomorrow. There will be a break in the snowfall Thursday night and Friday morning, but by Friday afternoon the next system moves in and the snow will begin to pile up again.

  • Today

    High Temperature: 31 to 36
    Winds/Direction: 15 to 25 G40, SW
    Sky Cover: Overcast
    Irwin Snow: 6 to 10″
    Elkton Snow: 6 to 10″
    Friend’s Hut Snow: 6 to 10″

  • Tonight

    Low Temperature: 20 to 25
    Winds/Direction: 15 to 25 G40, WSW
    Sky Cover: Overcast
    Irwin Snow: 10 to 14″
    Elkton Snow: 10 to 14″
    Friend’s Hut Snow: 10 to 14″

  • Tomorrow

    High Temperature: 27 to 32
    Winds/Direction: 10 to 20, W
    Sky Cover: Overcast
    Irwin Snow: 4 to 8″
    Elkton Snow: 4 to 8″
    Friend’s Hut Snow: 4 to 8″

Gothic Valley

CB Avalanche Center2018-19 Observations

Location: Crested Butte Area
Date of Observation: 03/05/2019
Name: Steve Banks

Subject: Gothic Valley
Aspect: North East, South
Elevation: 9,400-10,600

Avalanches:

No new avalanches were observed today. We got a little peak at the crown of the North Bowl of Gothic which hit the Judd Falls toilets. Photo attached.

Weather: Sunny and warm in the morning with increasing high clouds. Intense solar radiation. S-1 at 7 pm. Ligh Westerly winds and some wind transport on alpine peaks.

Snowpack: South Aspect: Soft 2-4 cm crus from yesterday softened in today’s warmth. Upper 4 cms of snow became moist again and made for good hot pow skiing. HST sits around 60 cms on average. Below lies 1-3 different crust layers with notable facets surrounding. Basel facets exist below a 30 cm 1F slab, though they are rounded and 4F+. CTM results on upper crust (2/28 interface) resident planer and did not produce in Extended Column tests.

North East Aspect:
Dug 1 test profile and a crown profile on the only observed avalanche on Snodgrass at 9,600 feet. Avalanche broke on deep persistent layers at 40 cms above the ground in an isolated location 40 degrees in steepness. Resulting avalanche had a crown just under 2 meters deep, 30 meters wide and D2 in size (photo attached).
Both profiles showed CTM results within the new snow at a density change. Neither produced in Extendd Column tests.
Photos:

Mountain Weather for 11,000ft

CB Avalanche CenterWeather

Date: 03/05/2019

The Crested Butte area will get a short reprieve for the second day in a row from accumulating snowfall. Today you can expect filtered sunshine and moderate westerly winds. A weak ridge slid into the area but will be short lived. A moist Pacific storm is just off the coast of California and set to make it’s way inland. This system will begin impacting the area tonight and will produce a healthy shot of snowfall on Wednesday through midday Thursday. Weather models are predicting total accumulations, by the end of the day on Thursday, from 10″ to 20″. As soon as this system moves out on Thursday evening, a second snow maker looks to steam into the area on Friday. The pow train appears to be rolling through Crested Butte again…all aboard.

  • Today

    High Temperature: 25 to 30
    Winds/Direction: 10 to 20, W
    Sky Cover: Partly Cloudy
    Irwin Snow: 0″
    Elkton Snow: 0″
    Friend’s Hut Snow: 0″

  • Tonight

    Low Temperature: 16 to 21
    Winds/Direction: 7 to 17, WSW
    Sky Cover: Overcast
    Irwin Snow: 1 to 3″
    Elkton Snow: 1 to 3″
    Friend’s Hut Snow: 1 to 3″

  • Tomorrow

    High Temperature: 31 to 36
    Winds/Direction: 14 to 24, G40
    Sky Cover: Overcast
    Irwin Snow: 5 to 8″
    Elkton Snow: 5 to 8″
    Friend’s Hut Snow: 6 to 9″

Brush Creek Rd Above Death Pass

CB Avalanche Center2018-19 Observations

Location: Brush Creek Area
Date of Observation: 03/04/2019
Name: Travis Tucker

Subject: Brush Creek Rd Above Death Pass
Aspect: South East, South, South West
Elevation: 9,400’

Avalanches:

Weather:

Snowpack: Windloaded and heavily corniced.
Photos:

Weekend at the Friends Hut

CB Avalanche Center2018-19 Observations

Location: Brush Creek Area
Date of Observation: 03/04/2019
Name: Travis Tucker

Subject: Weekend at the Friends Hut
Aspect: South East
Elevation: 11,490 —> 12,600

Avalanches:

SS-NSU-R3 D3-I (but stepped down into old) SE face of Carbonate @ 12,600’ SZ Lrg SS avs observed on Timber Hill Chutes on exit.

Weather: We measured snow fall using H2D at Friends Hut from 3/1 to 3/4 and recorded 48” of snow. Sky was OVC —> OBS until Monday. Light to Moderate winds with strong gusts throughout weekend from SW —> NW. S-1 —> S-Nukin for most of weekend. Avalanches observed with better vis on Monday.

Snowpack: Hasty Pit. See photo. HS 225. PF Thigh. Storm Slab was reactive while PS was stubborn to CT, ECT.
CTE 7 RP Q2 & ECTN 12 d20 cm on 4mm DF
PST 45/100 (SF) d60cm on MFcr
Photos: