Field Report

Vail & Summit County - CO

2024/12/22
Lat: 39.619, Lon: -106.243
Backcountry Area: Vail & Summit County
Author: Kreston Rohrig
Organization: Forecaster, CAIC

Report Information

Observation Summary

I was surprised to see how weak the snowpack was in this area. Usually, this is a decently snowy part of the zone, but not this year. Average snow depths in the start zones on north to east-facing slopes were only 60-70cm. With very little wind-loading, the snowpack was completely faceted and felt like a sandbox from top to bottom. More concerning was that most slopes had ripped out during the Thanksgiving cycle and were super thin and weak. I was able to easily trigger a series of Loose Dry avalanches on steep north-facing slopes. The recent load since Thanksgiving was only 25-30cm deep but slid easily on a slick bed surface. These slopes will become super dangerous when we get more snow.

CAIC Notes

Rec trip up Gore Creek

Area Description

Gore Range

Route Description

From the Gore Creek trailhead up to the north-facing chute above Gore Creek

Avalanche

Triggered avalanche

I intentionally triggered a series of Loose Dry avalanches on a steep north-facing slope that had previously slid. These gained mass and speed as they entrained more snow moving downhill.

i
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Date # Elev Asp Type Trig SizeR SizeD Problem Type Location
12/22/2024
3 TL N L AS/c R1 D1 Loose Dry

Snowpack

Cracking: None
Collapsing: None

Weak from top to bottom with no slab left intact. I dug a quick pit in a small drifted area on an east-facing slope to see how a new slab would react. I had an ECTP11 which shows how easy it will be to trigger an avalanche once a new slab forms.

Weather

Mostly clear and calm, with clouds building to the east.

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