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Observation: Turnagain

Location: Tincan to 3700'

Date:
Observer:
Route & General Observations

Tincan normal uptrack to Hippy Bowl (3700′)

Red Flags
Red flags are simple visual clues that are a sign of potential avalanche danger. Please record any sign of red flags below.
Observer Comments

No signs of recent instability
Visibility was good enough to see old debris (from Thanksgiving rain event) around the valley. Couldn't see any crowns and based on debris most avalanches were D2 - D2.5 in size.
-Northern side of Sunburst on Elevator Shaft and a gully just to its East
-Northern aspect of Tincan ridge, opposite side of CRF ridge
-CFR ridge 2800' (reported yesterday that it may have ran naturally Sun Eve/Mon. AM) After further investigation it was likely triggered near the end of the Thanksgiving rain event, Saturday morning (11-28.) Bed surface was a pencil hard 3" melt/freeze crust on the ground with 10" of light dry snow covering it. Debris ran to about 2000' and was covered with 8+" of low density snow. Crown was filled in below cornice.

Weather & Snow Characteristics
Please provide details to help us determine the weather and snowpack during the time this observation took place.
Weather

Overcast, but good visibility
25F
Calm winds
No Precip

Snow surface

1000' - 1500' - 5" low density snow sitting on firm melt/freeze crust
2000- 2500' - 8-10" of low density snow on a crust that transitions to dense slab (1F) near 2500'
3400' - 10+" of Powder!

Snowpack

*Dug several Hand pits on wind loaded test slopes with very little reactivity and poor quality sheer. Stomped on several small cornice features, all were difficult to budge.

Probed around from the ridge 3500' to 3400' on a SW aspect on Hippy Bowl. Height of Snow varied from 200cm to 80cm. Average slab depth was 150cm. Near the ridge HS was near 200cm and 80 cm near rock features. Dug two pits at 3400' on a SW aspect of Tincan, near Hippy Bowl, about 100' below the ridge. Test results were unremarkable (ECTX.) See photo diagram for more details.

Photos & Video
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