Variable upper snowpack- Pockets and larger areas, particularly in Central, Pinnacle, and especially Odell, of recently formed wind with significant areas scoured to hard, supportable crust.
Wind slab was touchy though thin and small in observed . . .
On touring into Tuckerman today, we noted the following activity:
SS-N-R1-D1.5 in Center Bowl of Tuckerman. This likely occurred 1/3/18. We think so by the amount or reloading that took place. This may have been triggered by very small dry-loose . . .
We observed debris in the far looker’s left runout of Left Gully.
Loose snow avalanche, naturally occurring (probably this morning), very small relative to path (though just a guess as visibility was very poor and we could only see 200 . . .
Good visibility early this morning for observations in Tuckerman Ravine. Obvious avalanche debris at the bottom of Left Gully from the Dec 31/Jan 1 storm. D1.5 in size, crown not visible. Possible avalanche debris on the floor of the ravine under . . .
We climbed Yale Gully in Huntington and talked to climbers who were in Pinnacle and Central. Isolated pockets of new snow exist on top of the December 22/23 melt-freeze crust. This new snow arrived on a refreezing snowpack and has bonded well. High . . .
First visibility following rain storm, large wet slab avalanche crown and debris observed. Suspected occurrence late Friday 12/21 or early Saturday 12/22.
WS-N-R3-D2 (Wet Slab, Natural Trigger, Medium size relative to path, Large enough to bury, . . .
Snow surface was dry at the pit but sun exposed slopes saw some surface melt. Air temp warm ~30 deg. cloud cover 0%
east slope at 30 deg steep 4000 feed above sea level.
Snow depth 120 cm
There were no strong boundaries in the snow . . .
Shoestring Gully is in great, snowy condition for December. It showed signs of recent avalanche activity and windslab formation. A mitt pit at around 2,200′ in the first snowfield of the gully (WSW aspect) showed layers of one-finger-hardness . . .
unbreakable crust with skis, boots broke the crust down the left gully. See photos for snow pit info location and photo of the pit.
In an isolated ENE terrain feature at 4800’ I dug a pit down to a firm layer. HS 185cm. I performed a CT which resulted in a CT12 at 115cm, Q2, on DF. There are several layers of facets between the observed crust layers. This failed BELOW a crust . . .