Observation: Turnagain

Location: Lower elevations Tincan, Center ridge and Sunburst

Date:
Observer:
Route & General Observations

Three groups on day 2 of a Level 1 with the Avalanche school braved the cold parking lot temps and toured from the center ridge lot towards the Tincan backdoor, Center ridge & backdoor Sunburst area. All parties dug pits below treeline. A group at 1150′ on a W aspect in an meadow on the approach to sunburst did not see any failure or propagation in their snow pits, but did observe a well-preserved surface hoar layer 80cm down. The other travel groups travelled a bit higher in elevation and did not observe a buried surface hoar layer in their pits. Another notable result from the group on center ridge, at 1330′ saw failure on a weak layer of facets beneath the Christmas crust: CTV @ 10cm, ECTN6 @ 10cm.
Clear blue skies made for a beautiful day out and a few cm’s of surface hoar on top of a supportable crust made for quick travel out of the field.

Red Flags
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Observer Comments

None.

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

Clear, light winds and cold temperatures.

Snow surface

Surface hoar on top of a supportable crust.

Snowpack

Center ridge, 1380' W aspect: CTV @ 10cm; ECTN6 @ 10cm.
Sunburst backdoor, 1150' W aspect: CTN; ECTX. Observed buried surface hoar layer @ 80cm.
Tincan backdoor, 1630' S aspect: CT23 Q3 @30cm

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