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Observation: Turnagain

Location: Upper Seattle Creek drainage, headwall area

Date:
Observer:
Route & General Observations

Rode into the upper portions of Seattle Creek drainage to look at the problem weak layer plaguing the region currently.

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

Mostly sunny, temps in the upper 20's F and light easterly winds.

Snow surface

4-8" of low density powder snow.
Small surface hoar growing on top (2-5mm)

Snowpack

We dug several snowpits to see what the MLK BSH layer (Martin Luther King Jr. Buried Surface Hoar) was doing.

Pit #1:
NE, 3,300', 20 degree slope
CT 24, 40cm down on MLK BSH
ECTN 30+, same layer

Pit #2:
N, 3,100', 30 degree slope
ECTX, could not find the MLK BSH

Pit #3:
E, 3,000, 15 degree slope
2x ECTN, 35cm down in the MLK BSH mixed with facets

Pit #4 Repeat Offender slide path:
E 2,500', 15 degree slope
ECTP 19, 40cm down MLK BSH
2x EXTN 30+, same layer

Bottom line: We found the worrisome layer roughly 14-20" down in all pits but one on a N aspect. Only one pit (2,500' Repeat Offender slide path) showed propagation potential. Although these stability tests are showing a strengthening snowpack, these tests cannot be trusted unfortunately. As seen in the events on Eddies ridge from yesterday (Feb, 6).

Photos & Video
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