Location: Kebler Pass Area
Date of Observation: 04/10/2020
Subject: Red Lady; Wet Slabs and Snowmobiles
Aspect: South East, South
Elevation: 12,000

Avalanches: D1 wet slab at the saddle between Coon and Wolverine. Looks like it failed late in the day yesterday. A few small pieces of the cornice triggered a loose wet that stepped down. Maybe warming around the rock band had water running along bed surface. Crown is 25-30 cm.

Weather: Intermittant clouds and sun with little to no wind. Temperature in the 30s, but felt like 50. T-shirt and no gloves at 9:30.

Snowpack: Solid overnight freeze despite mild temps. Surface warming quickly; especially the dirtier portions of the snow surface.

Photos:

Location: Crested Butte Area
Date of Observation: 04/09/2020
Name: Eric Murrow
Subject: Hot in Gothic
Aspect: North, North East, East, South East, South, South West, West, North West

Avalanches: By 11am the east side of Gothic Mountain came alive and produced frequent loose wet avalanches from steep, rocky east-facing terrain near and below treeline. There was loose activity every few minutes for several hours. Most were D1 in volume but one D2 was able to accumulate mass on a below treeline slope that had yet to produce much loose activity this spring and pushed debris down a gully into an impressive pile at valley bottom, ran at 1pm. (see photo).

Weather: Very warm with clear skies until 3pm when clouds and virga started to push into the area. Winds were absent at valley bottoms.

Snowpack: Spent the day near valley bottom at 9500′. Crust were 4 or 5 inches thick in the moring and by 1pm they had broken down enough that boot penetration was basically to ground or as long as your legs would allow.

Around 315pm crossed several northeast and east-facing slopes, 9500′, and found that some slopes were unsportive to skis at times with minor collapsing of the barely intact crusts. More northerly slopes had intact slab structure where as east was just a broken down crust sitting on wet snow.

Photos:

Location: Brush Creek Area
Date of Observation: 04/09/2020
Name: Steve Banks
Subject: The freeze is not deep!
Aspect: South East, South
Elevation: 9,000-12,000

Avalanches:Some older wet and dry slabs. Only recent looking activity came out of steep, rocky West facing, tho all we could see was the toe of a large debris pile.

Weather: Sunny, warm, barely a lick of wind.

Snowpack: 4-6” thick freeze was supportive all morning. Snow below was sometimes large grained and wet, sometimes large grained and dry. Lower elevation are pretty trap-door pretty quick with the sun and warm temps. Several collapses noted as it began to thaw.

Location: Crested Butte Area
Date of Observation: 04/09/2020
Name: Turner Petersen
Subject: WSC Natural Wet Slide 4/8
Aspect: West
Elevation: 10,000

Avalanches: From work, I spotted a natural wet slab Avalanche across the east river valley. This avalanche ran sometime yesterday afternoon. The slide slid to the ground, and maybe 200 feet. West aspect, 10,000 feet. Below treeline.

Weather: Hot, Sunny,

Snowpack: N/A

Photos:

Location: Paradise Divide Area
Date of Observation: 04/08/2020
Name: Sean Feese
Subject: Avery Diamond Face
Aspect: South West
Elevation: 10000-12600

Avalanches: Skier caught and carried, was able to ski free from moving avalanche to safety. Avalanche broke above skier on the west side of a roll in cold snow. Slid on the ground, then popped up on to the snow surface when it reached deeper snow. Avalanche did not gouge or step down. Avalanche was approximately 20 inches of snow on a smooth rock surface. The debris ran for about 600 feet. The avalanche occurred about halfway down the face at approximately 11800.

Weather: Sunny, Breezy

Snowpack: The snow had a good refreeze from the night before, even in the valley at 10,000ft. The diamond face struggled to warm with the SW breeze. A few hundred feet from the summit the snow had started to corn up. The corn continued until the valley, and was supportable until around 2 or 2:30.

Photos:

Location: Paradise Divide Area
Date of Observation: 04/08/2020
Name: Evan Ross
Subject: Washington Gulch Look Around
Elevation: 9,000-12,000

Avalanches: Plenty of cornices that have released above treeline. Some were old and some looked fresh or at least recent. I didn’t observe any new cornice falls that also triggered a deeper slab avalanche below. Plenty of loose wet avalanches at all elevations from today and past days. Most of the natural activity has been on east south and west. Saw some roller balls on a NTL NW aspect and plenty of shiny snow surfaces around the compass.

Weather: Blue bird and calm. High temps at Elkton hit around 50 degrees.

Snowpack: Started the late morning off checking in on an ENE aspect at 9,200ft near Crested Butte. HS was ~100cm. Last night’s freeze and surface crust was about 18cm thick. The wetting front had moved through the early march interfaces. While the old facets in the lower half of the snowpack were of course moist. CT results produced hard non-planar breaks in those facets. Once that crust broke down later in the day. A loose wet avalanche problem, that could gouge into the rest of the snowpack, would have been the primary avalanche problem.

Headed out Washington Gulch in the afternoon. Loose wet avalanches appeared to be the main avalanche problem. Foot pen was often around 30 cm’s into wet snow, but the snowpack was supportive. I found a couple of areas that I punched through the snowpack into wet snow at the ground. Where I found a punchy snowpack I didn’t observe any collapses.

Location: Crested Butte Area
Date of Observation: 04/08/2020
Subject: RMBL Study Plot 04/08/2020