Manto nivoso

Sixmile

Rob MillspaughSwan Range
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Quick report

Cracking
isolated

Yesterday's cold front caused white-out conditions in the Swan Valley with powerful winds and 4 inches of snow in just a couple hours. I approached the mountains with curiousity today. 

  • I found an average of 4 inches of new snow, with isolated drifts thicker than 8 inches.
  • There were signs of wind effect on all aspects and elevations.
  • At mid and upper-elevation easterly winds had scoured east-facing slopes down to the stout melt-freez crust. 
  • Westerly slopes had great powder skiing into the afternoon. Slopes facing south and southeast had afternoon corn.
  • I found a thin soft slab in the entry to a west-facing couloir at 7200',  I elected to ski better quality snow on an adjacent slope. 
  • Increasing afternoon cloud cover limited the extent of warming on westerlies. 

Its spring skiing at its finest. Easy travel, powder, corn and sunshine. Heard some sleds out there too!

Found a thin soft slab in the entry to a west-facing couloir at 7200'.

Weather

Air Temp
30
Cloud Cover
scattered
Wind Loading
previous
Rain Elevation
Valley Bottom
Recent Snowfall
10
Snow Avail For Transport
small smounts

Morning temperartures 15-20*F all elevations. Valleys were 45*F on drive home. Few clouds to start the day increasing to broken skies in the afternoon with light snow showers at 2:00pm.

Snowpack

10 to 15 cm new snow on top of 15 to 20 cm melt-freeze crust on top of west snow.  East-facing slopes did not have new snow due to strong easterly winds.