Field Report

Aspen - CO

2025/03/07
Lat: 39.04, Lon: -107.191
Backcountry Area: Aspen
Author: Brian Lazar
Organization: Forecaster, CAIC

Report Information

Observation Summary

A couple natural avalanches that look like they ran Thursday night. Surprisingly little activity given the rapid load. About 20 inches of recent storm snow, with a dense layer mid-storm about 10 inches deep. The storm ended with colder snow and calmer winds. This obscures a lot of the wind effect from the strong westerly winds yesterday and overnight. Sadly, it looks like some faint dust blew in with this storm, which is discernible about 18 inches below the surface. Snow got dense and moist as periods of sun took their toll mid day. Some rollerballs and pinwheels starting coming out of steep rocky terrain a little after noon. Expect more shedding of the recent storm snow tomorrow.

Area Description

Raspberry Ridge and north anthracite creek

Avalanches

Saw an avalanche
i
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Date # Elev Asp Type Trig SizeR SizeD Problem Type Location
03/06/2025
1 TL E SS N R2 D1.5 Wind Slab
03/06/2025
1 >TL NE SS N R2 D2 Wind Slab

Snowpack

We got a couple of minor collapses in wind-loaded terrain around 11,300 feet on east and northeast aspects. The collapses were localized to underfoot, and occurred on the layer of small facets under the recent storm snow. This is illustrative of the new generations of Persistent Slab concerns, which are most worrisome on anything with even a slight northerly tilt. This could become more problematic as the storm snow settles and better connects across the terrain.

Weather

Mostly calm and warm. Mostly cloudy in the morning giving way to broken skies and periods of sun by there afternoon.

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