Manto nevoso

Mammoth Crest

Clancy NelsonEastside Region
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Quick report

Cracking
isolated

I went up to the Mammoth Crest to get a general sense of early-season coverage and to get baseline snowpack data from a north-facing slope at treeline. Coverage was thin and travel was challenging. My snow pit, dug at 10,000 feet in a place representative of the surrounding terrain, showed a thin, weak, continental snowpack.  

Localized cracking in shallow, rocky areas where previous winds had stiffened the surface snow.

Weather

Air Temp
50
Cloud Cover
scattered
Wind Loading
none
Snow Avail For Transport
small smounts

Increasing clouds and warm temps. Light winds from the southeast. No blowing snow.

Snowpack

  • Below treeline, snow depths ranged from 1 to 12 inches. Warm temps made the snow wet and sticky.
  • Near and above treeline, snow depths varied from 1 to 20 inches on northerly slopes. West to northwest winds on the 19th had drifted recent snow onto east-facing slopes and into gullies. Coverage is thin and the snowpack is weak. My snow pit had weak facets on the ground and I got propagation in my tests.
  • Slopes facing the sun were mostly bare.