Avalanche

Noisy Basin

Rob MillspaughSwan Range
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Quick report

Cracking
specific

We visited Noisy Basin to check out the recent snow and northeasterly winds:

  • We found 0-10" of dry snow on top of the recent melt-freeze crust
  • The new crust was 6" thick and supportable.
  • Winds in this location were from the East and gusted from light to moderate
  • We saw active wind loading onto slopes facing N, NW and W
  • We intentionally triggered small soft slabs up to 10" thick on NE, N and NW
  • We noticed several small natural loose dry sluffs on steep, rocky slopes 
  • Our pit at 6200' NE aspect revealed a generally strong and moist snowpack

We skied a NW slope finding a couple pockets of wind-stiffened snow during our descent.

avalanche info to follow

Reactive wind slabs (4F) 4-10 inches thick along a wind-exposed ridge at middle elevations.

Weather

Cloud Cover
broken
Wind Loading
light
Recent Snowfall
10
Snow Avail For Transport
small smounts

Snowfall tapered in the morning. Easterly winds gusted to moderate. Sunshine broke through the clouds briefly in the afternoon. Temperature/sun at low elevation was enough to melt new snow.

Snowpack

Pit @ 6200' NE aspect: HS=170cm, 55cm down to 2/3 crust.  Thin crust down 30cm. Top 15 cm dry and refreezibg crust.  Moist below. ECTX.

Avalanche

Size
D1 R1
Type
SS
Count
2
Aspect
N
Trigger
AS
Elevation
5800 ft

Intentionally triggered 3 small soft slab avalanches in wind affected terrain. Noticed one small natural soft slab. Saw a handful of recent loose dry in steep rocky terrain. Lots of recent cornice fall.