Field Report

Front Range - CO

2025/02/20
Lat: 40.309, Lon: -105.66
Backcountry Area: Front Range
Author: Ian Fowler
Organization: Forecaster, CAIC

Report Information

Observation Summary

Trail breaking was thick and difficult with a layer of firmer snow over the storm snow that needed punching through continuously. I did not find any Persistent weak layers in the mid or upper pack but I was consistently getting breaks about 30-40cm down on a density change in the storm snow. The weak layer was stella's. Wind was blowing strongly and still building slabs. I would not be willing to push into any of the bigger slopes in Rocky Mountain National Park currently.

Route Description

From the Bear Lake Trailhead we ascended the trail to the top of the Dream Dome. We then descended to Dream Lake and then up to the Dragon's Tail Apron.

Avalanches

Triggered avalanche

We only saw debris from one avalanche reported during the storm that was almost completely filled back in. I think if anything else ran it would have been filled in by wind and snow.

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Date # Elev Asp Type Trig SizeR SizeD Problem Type Location
02/19/2025
1 <TL NE SS AS/c R1 D1 Wind Slab
02/19/2025
1 <TL N SS AC R1 D1 Wind Slab
02/19/2025
1 <TL N SS AS/c R1 D1 Wind Slab

Snowpack

Cracking: Shooting
Collapsing: None

Below treeline the snowpack is deep close to or over 2 meters with basal weak layers down about 160cm. These weak layers appear to be rounding and were only reactive in a Propagation Saw Test which we found out was done over a boulder that significantly weakened the snow in a very localized areas. Deep Tap Tests did nothing. At the top end of below treeline close to the ridge we found large cornices and tender wind-slabs. These slabs gave way to very little pressure but never connected much terrain, max size a pickle ball court, even with a large cornice drop. All minilanches ran at about 30cm depth and were still in fist hard snow. Winds may continue to build these slabs and size could still increase.
Near/Above treeline (the Dragons Tail Apron is only at 10600-feet but has no trees) the wind was building slabs which were only 4finger hard but reactive in Extended Column Tests. The weak layer was a layer of Stella's and a density change from 4fingers to fist.

Weather

Warm and windy with a ground blizzard at times.

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