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Observation: Turnagain

Location: God's Country

Date:
Observer:
Route & General Observations

Followed the power lines from the road, cutting into the trees and gaining the bench features to a high point of 2050′. Looking to observe the surface conditions and for the presence of buried surface hoar under the New Years storm snow.

Red Flags
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Observer Comments

No glide cracks observed in God's Country area but many new cracks were observed opening along Seattle Ridge.

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

Clear sky
Single digit temps at the road
Increasing to low teens by highest elevation point (2050')
No precip
Calm winds

Snow surface

A crust present at all elevations
Thick surface melt-freeze crust with surface hoar on top until 600'
600-1200' -Variable 1-2" breakable melt-freeze crust
1200-1500' -Variable <1" melt-freeze crust
Above 1500'- Loss of rain crust, became a thin eggshell crust with 2-4" of near surface facets and 2mm surface hoar atop it
Above 1800'- Variable wind and rime effected surface
NSF directly below crust, followed by firm snow

Snowpack

Primary snowpack focus was the existence and reactivity of the buried surface hoar layer. We we able to find BSH in our upper 2 pit locations (1550' and 2050'), but only found propagation propensity in two 1550' pits with some spatial variability to the third pit on the same elevation band, which couldn't get a collapse on the BSH.
At 2050' the BSH existed in all three locations, but didn't show propagation propensity at this time.

Test Pit #1- Lower God's Country - 900' - SE - HS: 110
CT19 down 50cm on facets in between a crust interface
CT23 down 25cm on crust/not a clean break

Test Pit #2-Mid God's Country - 1550' - SE - 29* - HS:160cm
CT16 down 30cm on precip fragments
CT 17 down 60cm on BSH
CT23 down 55cm on BSH
ECTPN14 down 25cm on precip fragments
ECTP16 down 55cm on BSH
ECTP26 down 60cm on BSH
(3 pits dug at this elevation, 2 with similar results 1 with no propagation propensity)

Test Pit #3- Upper God's Country - 2050' - SE - 31* - HS:115
CT 15 and CT 13 down 30cm on broken precip and small (hard to find BSH)
ECTX
(3 pits dug at this elevation band, all with similar results)

Small natural (D1) old storm slab crowns visible on SE roll features above 2000'.

Photos & Video
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