Cement Creek Avalanches

CB Avalanche Center 2015-16 Observations

Location: Cement Creek Area
Date of Observation: 02/01/2016
Name: Ian Havlick, Zach Guy
Subject: Cement Creek
Aspect: East, South East, South, South West
Elevation: 8500-10000

Avalanches: See video. Counted about a dozen natural avalanches in steep terrain, running far, and all looking to break near or below new snow/old snow interface on small grained facets. Not on weakest depth hoar near ground. Investigated one slide, 50cm deep, running this morning. Steep (42º), east facing, below 29th meltfreeze layer. Interestingly enough, did not observe any avalanches on northerly facing terrain. Also observed 2 slides, east-southeast facing running on hillside across from cement creek ranch, with soft slab debris running across road.
Weather: Mild, humid, light snow S1 all afternoon, S1+ at times. Light WSW winds up valley 1300-1600, noticeably colder last hour or so, temperature on car dropped from 31 to 19 in few hours.
Snowpack: New snow 15-20,” deeper farther up valley. 1-2″ inches new accumulation between 1300-1600. Light to moderate winds were transporting snow in more exposed areas. Only travelled below treeline today, on southerly facing slopes. Booming collapses, cracking, easy to initiate fractures and small slabs on steep features.

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Remotely triggered pockets on small rollovers, and booming collapses.

Remotely triggered pockets on small rollovers, and booming collapses.

Failed in old facet layers below storm snow, a crust layer, and thin "midpack". Probaly Jan 14 layer.

Failed in old facet layers below storm snow, a crust layer, and thin “midpack”. Probaly Jan 14 layer.

Natural on E aspect BTL

Natural on E aspect BTL

Natural that hit Cement Creek Road

Natural that hit Cement Creek Road

Naturals along HWY 135. East aspect BTL

Naturals along HWY 135. East aspect BTL

Naturals, SE aspect BTL

Naturals, SE aspect BTL