Lawine

Sixmile

Rob MillspaughSwan Range
Auf der Karte ansehen
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Quick report

Traveled to an upper elevations near Swan Lake to verify problems and danger ratings:

  • Found no obvious signs of instability
  • 4-16 inches of snow above the Equinox crust/interface
  • Surface snow was moist below 5500 feet with some dry spots above - glopping was a factor but manageable
  • Alternating sun and snow kept the snow surface in flux throughout the day 
  • Winds were calm to light with no blowing snow
  • Cornice had grown from recent SW wind but otherwise could not find evidence of wind-stiffened surfaces
  • Could not produce cracks or avalanches on wind-exposed test slopes
  • A pit at 7300' N aspect revealed a strong snowpack that did not propagate in column tests

Snow skied surprisingly fast.  Kicked off some rollerballs below 6000' and got a bit sticky below 5500'. 

Media to follow

Kicked off some rollerballs below 6000'. No other obvious signs of instability.

Weather

Cloud Cover
broken
Wind Loading
none
Recent Snowfall
10
Snow Avail For Transport
small smounts

Many levels of cloud. Some passing breaks allowed enough sun to shed snow from the trees. Light snow (S-1) throughout the day with a convective shower (S1) at 1:00pm. Graupel at 3:30pm. Winds calm, gusting to light.

Snowpack

Pit at 7300' N aspect:  HS = 240,CTN, ECTN27 down 40 cm on Equinox interface,  2/3 crust down 110 cm, hard ice layer down 150 cm.

Avalanche

Noticed some recent small loose dry on steep and rocky NE aspect at 6800'