Avalanche

Hay Creek

Lydia and RobWhitefish Range
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Quick report

We had to chisel our way through rock hard loose wet debris, but we were rewarded with great views and pleasant riding.

  • Found winter-like conditions at ~5200'.
  • Cool, dry snowpack on N and E slopes including a weak layer that propagated in repeat tests.
  • Small loose wet avalanches from today/yesterday, but ample snow from this week's storm still left to slide on all aspects.
  • Fresh surface hoar was destroyed on slopes exposed to sun and wind. Surface snow on S and SE slopes transitioned from dry to wet in the afternoon.
  • Small natural soft slabs on wind loaded slopes probably occured during the last two days. Light wind transport throughout the day on exposed upper-elevation slopes.

We skied one at a time on steep slopes capable of producing large avalanches. 

Small loose wet from today and yesterday on southerly slopes. Small natural soft slabs on windloaded slopes likely occured 3/5-3/6.

Weather

Air Temp
30
Cloud Cover
few
Wind Loading
light
Recent Snowfall
12
Snow Avail For Transport
moderate amounts

Warming from solar radiation throughout the day with light, westerly winds with moderate gusting while on ridgelines.

Snowpack

@ 7000' NE

  •  HS=220cm
  • ECTN16 x 2 down 35 cm
  • ECTP28 and ECTP24 down 90cm on facets
  • 6" soft snow on top of a thin crust from last week, on top of a 3' 1F slab (consolidated by wind in our location), on top of 4F+ rouding facets (Grain size up to 3mm)

Avalanche

Size
D2 R2
Count
6
Aspect
E
Trigger
N
Elevation
6800 ft

6 x Loose wet avalanches, size 1-1.5 from today and yesterday on Southerly slopes in steep, rocky terrain. 10 x Loose wet size 1-2.5 from last weekends warming on S slopes. 3 x soft wind slabs up to D1.5. Spotted a couple potentail crowns on N and E from the AR, but they were very filled in.