Lawine

Copper Mountain

Nick ZelayaBanner Summit
Auf der Karte ansehen

Quick report

Collapsing
isolated

We observed obvious signs of instability at middle and upper evelations, including natural avalanches and unstable snowpack test scores.

Whumpfing and collapsing along ridgeline.

Weather

Air Temp
upper 30s
Cloud Cover
broken
Wind Loading
light
Rain Elevation
>8500
Recent Snowfall
0
Snow Avail For Transport
small smounts

Warm day with periods of sun that softened the rain crust with temperatures hitting the upper 30s. By 3pm temperatures at the trailhead hit the low 40s.

Snowpack

Western aspects held up to 70cm (2.5 ft) of snow.  SE-SW aspects held less than 30cm (1 ft). The rain had a significant effect on snow up to 8500' everywhere I traveled. Runnels were visible up to about 8,200'.

A pit on a west aspect at 8500' returned  unstable snowpack test scores (ECTP6) on the 12/5 weak layer of facets ~ 40cm down.

 

Avalanche

Size
D2
Aspect
NE
Trigger
N
Elevation
8900 ft

Avalanches observed on NE- E side of Copper Mountain ranging from D1-D2.