Avalanche

Cooney Ridge

Rob Millspaugh
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Observation photo 1Observation photo 2Observation photo 3Observation photo 4Observation photo 5Observation photo 6

Quick report

Climbed high into the Swan to look for the recent rain/snow line and refreeze:

  • Found no hints of a refreeze up 8000'
  • Found no new snow up to 8000' and did not notice any as high as 9000' when visibility allowed views of nearby peaks
  • Noted many recent wet loose on all aspects
  • Counted two large (D2-3) slab avalanches on rocky southerly slopes
  • Spotted one glide crack that opened on grassy SE slope at 7600'
  • The snow surface was wet on all aspects at upper elevations with ski penetration of 4-6 inches
  • It was easy to initiate rollerballs and small wet loose on North aspect at 8000'
  • A pit at 7600', North aspect found a moist but generally strong snowpack 

avalanche events to follow

Easily initiated rollerballs and small wet loose on northerly slopes.

Weather

Cloud Cover
obscured
Wind Loading
none
Rain Elevation
7000
Recent Snowfall
0
Snow Avail For Transport
none

Lots fog clinging to the terrain. Had a couple breaks that allowed for some views and sunshine. Best visibility at 2pm. Light graupel at 3pm transitioning to heavy snow at 330pm. Light rain below 7000'. Heavy rain at 5pm. Light gusts from the East.

Snowpack

Pit at 7600' N aspect: HS =215cm, mfcrs at 90cm and 182cm. Top 15 cm Wet.  Mid pack moist.  Wet and rounding basal facets in the bottom 50cm.  

 

Avalanche

Size
D2.5 R2
Type
WS
Count
2
Aspect
SW
Trigger
N
Elevation
8000 ft

Lots of recent wet loose on all aspects at upper elevations. Was able to initiate wet loose by throwing snowballs on steep slopes. Noted two slab avalanches on steep and rocky south-facing slopes that may have failed during warming mid-March.