Mammoth Side Country Observation

Mammoth Mountain Side Country
Submission Info
Sunday, January 17, 2021 - 10:45am
Red Flags: 
Mammoth South Slopes 37° 37' 34.9896" N, 119° 2' 24.8784" W
Snowpit Observations
More detailed information about the snowpack: 

Today we went to ski the smoothest and softest snow we could find.  In some ways we were successful.  The snow was smooth, soft and slidable.  However, we walked over(read down) pumice slopes, hit rocks and stumps and had trapdoor conditions for significant portions of our day.

The risk reward is slowly tipping toward, risk and the reward dwindling.

Snow coverage in our skied area in mammoth side country today was 0cm to 45cm.  The steeper and more southerly the aspect the thinner it got.  In all but the most isolated angle and aspect range the snowpack showed boot penetration to the ground and ski penetration about half that.  Not the rosiest picture, but we got it done for today and drank our lemonade.  

Fingers crossed to add some more sugar to our ample supply of lemons soon.

Snowpack photos: 
Small Roller Balls on Mid elevation southerly slopes around 30 degrees.
Southerly Aspect Snow Coverage ~10500 feet
Any other comments about the observation or links to outside pages that have more info on the observation: 
Weather Observations
Blowing Snow: 
Cloud Cover: 
Air temperature: 
Above Freezing
Wind Speed: 
Air temperature trend: 
Wind Direction: 
Accumulation rate: 
More detailed information about the weather: 

Here are a few weather observations from our tour today.

Dave's Wave/Visalia East Area

SE Aspect

10450 feet


30 degree slope

T air 7.0 degrees C

Tsurf 0.0 degrees C

T20 -1.0 degrees C

Ski Pen 5cm

Boot Pen 20 cm

Lower Fresno Bowl

9560 feet

SW Aspect

1400 hrs

Sky: CLR

Precip: NO

Wind: L -> N

Blo Sno: None

Tair 9.0 degrees C

Tsurf 0.0 degrees C

T20 -0.5 degrees C

Pen Ski 20cm

Pen Boot 40 cm

HS: 45 cm

HST: 0cm

Surface Form/Size: MF/2.0-3.0 mm




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