Remote Trigger, Relentless NW winds

Location: Paradise Divide Area
Date of Observation: 01/26/2019
Name: Joey Carpenter

Subject: Remote Trigger, Relentless NW winds
Aspect: South, South West, West
Elevation: 9600-11900

Avalanches:

ESE aspect initiating at 11.8k. This was a heavily windloaded slope. We were intentionally staying connected to this terrain feature (on the low angle ridgeline) and searching for shallow spots in the spx as we ascended since we knew the adjacent slopes were suspect. We got a small collapse at 11.7k (noted above) and didn’t think it propagated very far. However, as we ascended ~100 feet more, we saw the fresh debris pile of our remote trigger. This was an R1D2 slide that remote triggered from approximately 200 linear feet away around a terrain feature. The steepest part of the crown was on an approximated 37 degree slope. The crown did prop onto much lower angle terrain though. The slide was approximately 450 feet wide and ran 300 vertical feet. there were chunks of debris approximately 4x4x4ft at their largest. We did not inspect the bed surface as there was substantial hang fire above and we were unable to safely approach the crown.

Weather: Temperatures remained cold, very comfortable hiking temperatures. Sustained NW winds transported snow from high and mid elevation ridges throughout the day. Above 11k the western ridges are becoming scoured. Substantial wind effect on multiple aspects and elevations. The western part of the forecast area maintained clouds throughout our tour and they became thinner and less pronounced as you moved east across the zones. Solar intensity approached moderate for a few short periods during the day. However, cool temps and sustained winds kept snow surfaces cold.

Snowpack: We had two notable collapses on our tour. One at 11.1k on a 25 degree SSW facing slope while skinning, medium sized. Snowpack depth on this windloaded terrain feature was an average of 175cm. Did not dig to find the failure layer. The other collapse was at 11.7k on a S facing aspect and remotely triggered the avalanche described below.

Photos:

Fresh Baldy and WSC Avalanches

Location: Paradise Divide Area
Date of Observation: 01/26/2019
Name: Tom Schaefer (CBPSP)

Subject: Fresh Baldy and WSC Avalanches
Aspect: East, South East, South, South West
Elevation: ATL/NTL

Avalanches:

Fresh avalanches this afternoon observed from ski area.

Snodgrass-Freshened up

Location: Crested Butte Area
Date of Observation: 01/26/2019
Name: ADB

Subject: Snodgrass-Freshened up
Aspect: East
Elevation: BTL

Weather: Clear skies, cold temperatures, and moderate winds with no snow transport. Observed sustained NW winds blowing snow from top of Whetstone on drive to the trailhead and back.

Snowpack: Most tracks filled in between first bowl and third bowl. Snow was very supportive with a fresh coat of wind deposited snow, forming a 2 to 4 inch layer of soft wind slab.

Cement Creek-Recon

Location: Cement Creek Area
Date of Observation: 01/26/2019
Name: ADB

Subject: Cement Creek-Recon
Aspect: West
Elevation: BTL-Valley Bottom

Weather: Clear skies and light winds.

Snowpack: Poking around with ski pole and digging with hands:
HS is less than 27 inches.
snow is variable between supportive and unsupportive with a few complete collapses on a buried bedrock shelf.
very qualitative and subjective:
22 inches to surface-Fist hardness
12-21 inches: 4F hardness
10-12 1F hardness
0-10 inches F hardness and full of faceted grains.

AIARE 1 Group 2 Gothic RD

Location: Crested Butte Area
Date of Observation: 01/26/2019

Subject: Irwin AIARE 1 Group 2
Aspect: South East
Elevation: 10,200

Weather: clear
10mph winds

Snowpack: 18 degrees
CT26 and CT27
ECTX

(HS on the gothic road pit I just submitted was 126cm)

AIARE 1 Group 3 Red Lady Glades

Location: Kebler Pass Area
Date of Observation: 01/26/2019

Subject: Irwin AIARE 1 Group 3
Aspect: East
Elevation: 10,200

Weather: Few Clouds
10mph at pit
15mph at cars

Snowpack: Red Lady Glades
E
CTX

AIARE 1 Gothic RD

Location: Crested Butte Area
Date of Observation: 01/26/2019

Subject: Irwin AIARE 1
Aspect: North East
Elevation: 9,600

Weather: Gothic Road
Sky cover- Few
10 mph winds (picking up around 2 pm)

Snowpack: CT 19 20cm
ECTX X2
Poor Man’s Rouchblock https://youtu.be/vXbxlWDmVE8

Ski Pen 15 cm
Boot Pen 45cm
Both images uploaded are facets at 20 cm 1-2mm rounding facets

Photos:

CB Zone

Location: Crested Butte Area
Date of Observation: 01/25/2019
Name: Steve Banks

Subject: CB Zone
Aspect: South East
Elevation: 9-11,000

Avalanches:

Small windlslab in Red Lady Bowl fresh on 1/24 night? Evidence of several small dribblers, sluffs and cornice falls in the bowl over the past few days.

Weather: Mostly sunny and felt warm, but cold if not in the sun. Moderate winds in the AM becoming light in the PM. Lots of blowing snow up high. No precip

Snowpack: 4-6″ of new snow from yesterday/last night was becoming moist in the sun. Below was a soft crust from prior sunny days and another just below that. Without digging a pit, the snowpack felt supportive but variable. Ski pen never more than 8″ but ski pole could be pushed over 130cms into the snow in some places, but resisted in others. Lots of snow moving onto NE/E slopes NTL and ATL.
Photos:

Washington Gulch Avalanche Obs

Location: Paradise Divide Area
Date of Observation: 01/27/2019
Name: Evan Ross

Subject: Washington Gulch Avalanche Obs
Aspect: S-SW-ENE
Elevation: 9-12500

Avalanches:

Purple Palace ENE. The Baldy wind slab is south. The wide propagating slab looks a few days old and is out Rustlers Gulch SE. Good view out there and didn’t see any other slabs.

Morning trip up Washington with no signs of instability. Plenty of previous wind transported snow and still transporting this morning.

Fresh Whetstone Avalanches

Location: Crested Butte Area
Date of Observation: 01/25/2019
Name: Ian Havlick

Subject: Fresh Whetstone Avalanches
Aspect: East
Elevation: 8700 BTL

Avalanches:

New pockets failing overnight (red), adjacent to other pockets observed fresh yesterday (yellow). failing 2ft deep on old November and December facets
Weather: 2″ new snow overnight. light north winds at this elevation, moderate NW winds at ridgetop

Snowpack:

Photos: