Red Cone Approach Trees

SNOWPACK OBSERVATION Red Cone Approach Trees Mammoth Lakes
Submission Info Forecaster Tuesday, January 9, 2018 - 3:30pm

Contributor

Tina Smith

Red Flags:

Recent loading by new snow, wind, or rain

Red Cone Approach Trees 37° 36' 0" N, 119° 1' 6.96" W

See map: Google Maps

Snowpit Observations

More detailed information about the snowpack:

Observer: d lewis

Jan 10, 2018, 9:07 PM

Red Cone Approach

Loc:Lat/Lon: 37.6000, -119.0186

Elevation: 9600'

Aspect: WNW Angle: 32°

Sky Cover: SCT, Precipitation: No Precipitation

Wind Speed: Calm, subjective

Current Temp:0 to -5°C Trend:➘

New Snow, Storm:50cm , Boot Penetration: 40cm

Snow Stability: Fair, Stability on similar slopes: Fair

Avalanche Danger: Considerable
Comments: Better coverage from 8600' to 9000'. Light melt freeze crust to 9200' on solar aspects and near trees as the sun heats the snow on the boughs. Above ~9200' on Northerly aspects 30 to 40 cm new. Hand shears moderate - planer, 35 cm on Easterly aspect, elevation ~ 9400'. Stability tests show potential weakness within the new snow and above the 1/4 Rain Crust. Failures consistent but mostly irreguler. No slides observed along the Crest. Compression Test - CTM 13, Q3 @ 93cm, CTM 16, Q3 @ 93cm, CTM 17, Q3 @ 93cm. CTH 21, 25, Q2 (failed in the facets above the 1/4 Rain Crust). No

Snowpit or crown profile photo or graph:

Weather Observations

Blowing Snow:

Yes

Cloud Cover:

25% of the sky covered by clouds

Air temperature:

Below Freezing

Wind Speed:

Calm

Precipitation:

None

Air temperature trend:

Cooling

Wind Direction:

West

Accumulation rate:

None

More detailed information about the weather:

Winds were westerly on arrival but subsided by late PM. No signs of wind transport in the trees but noted some snow transport on arrival with snow being blown off the trees.