Mammoth Lakes Basin

Submission Info
Tuesday, April 18, 2017 - 10:30am
Red Flags: 
Recent loading by new snow, wind, or rain
37° 36' 12.312" N, 119° 0' 54.2304" W
Snowpit Observations
More detailed information about the snowpack: 

Toured up towards the Crystal Lake trees above Lake George to look at snow/rain level and for propagation potential vs. loose wet activity. Turned around as visibility deteriorated and I was soaked through for too long.

0930- Snow level at about 8900', freezing rain below that. Winds moderate from the SW. Moderate blowing snow visible above about 9200' on the W and NW aspects of the Sherwins (top of Mineshaft, cross loading on the slope that parallels Lake Mary Rd). Several areas of natural roller ball activity on W facing aspects at about 9000'. New snow: 3-5cm, very moist. Ski pen = 10cm.

1000 between Lake Mary and Lake George- New snow: about 10cm above 9000'. Test slopes had both loose wet point release results and some propagation (cracks about ski length). Hard to tell the difference because roller balls and loose results ran about 5-10cm deep in the new snow over top of the deeper propagating cracks. Light snow. Moderate SW wind.

1030, E aspect at 9200' above Lake George- Quick snow pit showed some propensity for propagation (see attached profile). Snow moist to wet down to the bottom of my profile. Primary results were at the old/new snow interface 15cm down and on the melt-freeze crust buried on 4/6 by the last AR, 65cm down. By the time I packed up snowfall had become moderate and there were occasional strong wind gusts, air temps felt colder.

1100- Snow level had fallen to about 8700'.

Snowpit or crown profile photo or graph: 
Weather Observations
Blowing Snow: 
Cloud Cover: 
100% of the sky covered by clouds
Air temperature: 
Above Freezing
Wind Speed: 
Air temperature trend: 
Wind Direction: 
Accumulation rate: 
Less than 1 in. per hour
More detailed information about the weather: 

Very wet out there. Poor visibility by 1030.

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