Red Cone

SNOWPACK OBSERVATION
Submission Info
Forecaster
Thursday, February 23, 2017 - 11:00am
Red Flags: 
Recent avalanche activity
Recent loading by new snow, wind, or rain
37° 35' 53.9592" N, 119° 1' 12.7704" W
Snowpit Observations
More detailed information about the snowpack: 

Route: Up from gate at Tamarack to Lake George, up standard route to E summit of Red Cone. Down trees from Red Cone to Horeshoe Lake, down next to Twin Lakes waterfall.

0930- Recent (<12hrs old) D1.5 under Mineshaft on Sherwins. NNW aspect, >35deg start zone, starting at about 9600', vertical fall about 200'. Soft slab, natural, in new snow.

1000- 2 recent D1s under Crystal Crag. E aspect, >35deg start zone, starting at about 10000', vertical fall about 200'. Soft slabs, natural, probably wind slab in new snow.

1030- Kick tests on E and W facing slopes resulted in some shallow localized cracking (<1m). Several hand shears failing with moderate force on a F hard layer on top of 1F layer about 25cm down. Hasty pit in a large opening in the trees on the skin track, N aspect: Shovel tilt test had easy planar results at about 15cm and 25cm down. CTM PC 25cm down x2.

1100- Recent D2.5 under Jaws on Mammoth Crest. NNE aspect, >35deg in start zone, starting just under the cornice at about 10400', vertical fall about 700'. Soft slab, natural, wind slab in new snow. Test profile dug on E aspect at 9800'. Some instability, but somewhat inconclusive results. See attached profile.

1230- Light W wind with moderate gusts on the E summit of Red Cone. Still some light and localized blowing snow. Cornices and pillows point to SW-S-SE wind loading during the storm Monday and Tuesday. Both sides of the bowl looked loaded. Took a very conservative line back down to the trees and down to Horseshoe.

Snowpit or crown profile photo or graph: 
Snowpack photos: 
Recent D2.5 under Jaws
Weather Observations
Blowing Snow: 
Yes
Cloud Cover: 
25% of the sky covered by clouds
Air temperature: 
Below Freezing
Wind Speed: 
Light
Precipitation: 
None
Air temperature trend: 
Static
Wind Direction: 
West
Accumulation rate: 
More detailed information about the weather: 

Sky went from clear to few clouds to scattered clouds throughout the day. Air temps cold and stayed cold.

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