Mammoth Rock, Sherwins

Mammoth Rock, Sherwins
Submission Info
Saturday, March 18, 2017 - 3:30pm
Red Flags: 
Mammoth Rock, Sherwins 37° 36' 42.12" N, 118° 59' 30.12" W
Snowpit Observations
More detailed information about the snowpack: 


Observer: Doug Lewis, Eastern Sierra Avalanche Center
Mar 18, 2017, 8:39 PM
Loc: Mammoth Rock 
Lat/Lon:37.6117, -118.9917
Elevation: 9550 f
Aspect: NNW Angle: 32°
Sky Cover: BKN
Precipitation: No Precipitation
Wind Speed: Moderate subjective
Wind Direction: W
Current Temp: 0 to 5°C Trend:➘
Blowing Snow: None
Boot Penetration: 25cm
Snow Stability: Good
Stability on similar slopes:Good
Avalanche Danger: Low

Comments: Light to moderate SW - W winds. Variable cloud cover, mid to high. Top 30-45 cm wet to ~9000, above ~9000 20 to 30 cm, except NE-N aspects top ~3cm wet, moist trending toward dry to 60cm. Very consolidated melt/freeze. 2 Stability Tests: STN 0cm CTN 0cm. Temps 8500 8.6C, 9000 6.8C, 9500 4.4C. No avalanche activity noted. Triggered Loose Wet possible on steep solar aspects. Extensive dog bombs at the trailhead. Creeks begining to open up below ~8700. Low elevation southerly aspects showing significant melting over the past few days with many slopes bare or nearly below ~8000, especially as you move away from the Creast toward the east.  


Snowpit or crown profile photo or graph: 
Weather Observations
Blowing Snow: 
Cloud Cover: 
50% of the sky covered by clouds
Air temperature: 
Above Freezing
Wind Speed: 
Air temperature trend: 
Wind Direction: 
Accumulation rate: 
More detailed information about the weather: 

Moderate to strong winds aloft. Ground level - light to moderate, SW to W. Intermittent mid to high cloud cover at times 7/8's, mostly 4/8's to 5/8's. Temperatures above seasonable despite cloud cover.  

-- placeholder --

ESAC receives significant financial support from ...