Valanga

Garden Wall

Rob Millspaugh & Josh Lipkowitz
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Quick report

We teamed up with our friends at USGS to check the amounts and stability of new snow in Glacier National Park. 

  • We found 1 to 2 feet of fluffy new snow above 5000 feet. 
  • The new snow sluffed easily under our feet.
  • Though avalanches were small, some ran long distances on the firm crust below. 
  • Steep and rocky terrain produced recent natural sluffs; again, these were small in size. 
  • Winds were calm during our tour. We found little evidence of wind effect.  

We rode knee-deep powder one-at-a-time on slopes angled 30 to 35 degrees, and group skied on slopes less than 30 degrees. Pretty amazing mid-April pow day. 

Natural and human-triggered dry sluffs in the new snow on steep slopes.

Weather

Air Temp
20
Cloud Cover
overcast
Wind Loading
none
Rain Elevation
Valley botom
Recent Snowfall
30 to 45
Snow Avail For Transport
large amounts

Calm wind, light snowfall tapered through the morning.

Snowpack

@5000 to 6500 ft: 30 to 40 cm new snow (F) on top of stout crust.

@6500 to 7400 ft (high point): 35 to 45 cm new snow (F) on top of 5 to 10 cm old snow (4F+)  from 4/11-4/14, resting on stout crust (K).  Small rounding facets at the crust interface.  Wet snow below the crust. 

 

Avalanche

Size
D1 R1
Type
L
Count
2
Aspect
S
Trigger
AS
Elevation
7400 ft

D1 natural and human-trigger dry loose on steep slopes.