Field Report

Southern San Juan - CO

2025/04/04
Lat: 37.491, Lon: -106.801
Backcountry Area: Southern San Juan
Author: Alex Haddad
Organization: Forecaster, CAIC

Report Information

Observation Summary

It was nice to travel on soft snow from the top of Wolf Creek Pass. While traveling on new and drifted snow on north through east facing slopes, I did not experience cracking or collapsing. On solar aspects the snow surface was moist, and it turned into a thin melt freeze crust when cloud cover moved in. On all aspects a firm melt freeze crust sits below this most recent storm snow. On a steep west facing slope the new snow was easily sluffing on the melt freeze crust that sits below the snow since April 1st. In areas above treeline that have a more connected slab of freshly drifted snow, it is likely that these avalanches could propagate further with more snow and wind in the forecast.

Area Description

Lobo electronic site, Gibbs drainage.

Snowpack

Cracking: Minor
Collapsing: None

On a north facing slope at 11,600' the height of snow was 190 cms. There is still dry depth hoar 60 cm below the snow surface. In an extended column test I did not have any propagation. I had an ECTN 15 down 40 cms, which failed above a 2cm thick refrozen melt water layer. On a west facing slope at 11,500' the melt freeze crust that sits below the snow from the last several days was knife hard. The new snow cracked only a couple of feet in the front of the skis before sluffing.

Weather

Since April 1st I measured 15.5" of new snow, 0.8" of snow water equivalent. Sunny and warm until noon, then S-1 for the rest of the afternoon.

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