Avalanches: Green Lake Bowl cornice looks to have fallen at some point today, triggering a D2.5 sized slide, but was hard to see well from town with afternoon shadows. No other instabilities seen on terrain up to 35*.
Weather: Mostly Clear, Warm, winds Mod to Strong with Extreme gusts throughout the day from the WSW
Snowpack: Big winds transporting snow and loading lee slopes, even BTL and crossroading terrain in valley bottoms.

Avalanches:
Weather: Increasing clouds, light to moderate down valley winds with a few stronger gusts.
Snowpack: Morning sun and warm temps created hot pow/moist snow conditions down to the 3/13 interface. Traveled on slopes in the mid 20 degree range so the old snow surface was all firm melt freeze crusts. No instabilities or in this terrain.

Avalanches:
Weather: Warm, dry and windy, Mostly cloudy with with periods of strong sun, mod winds out of the SW.
Snowpack: New storm snow from the prior storm was generally 10cm with snow drifts up to 40cm. Snow depth ranged in the 180 cm to 120 at around 10,000ft, E Aspect. The new snow is F hard compression test result of CTM12RPQ2. See Photos.

E-Aspect-NTL

CTM12PRQ2-Results

Avalanches:
Weather: Increasing clouds, warm, winds Mod to Strong and increasing throughout the day from the WSW
Snowpack: Big winds transporting snow and loading lee slopes, even BTL. Cornice drop triggered storm slab path from yesterday completely filled back in today. Areas of open terrain scoured down to white ice / MF crusts. Skin track NTL / ATL re filling every 15 min.

Avalanches: Fresh natural wind slab ran today on SE face of Ruby Peak, potentially triggered by cornice fall, estimated about a foot deep on a mid-storm layer. SS-NC-R1-D1.5-S. Other crowns that failed yesterday or the night before shown below in photos.
Weather: Scattered clouds, moderate to extreme winds from the SW, and moderate snow transport.
Snowpack: Recent snow is blown out on most west and south aspects. Drifts up to 3′ on east aspects below ridgelines, that weren’t responsive to ski cuts. Stomping on small cross loaded wind whales further down slope caused some cracking and small 10″ pockets, failing on mid-storm layers.

NE aspect, Scarp Ridge

NE aspect, Whetstone

NE aspect, Mt. Axtell

SE aspect, Ruby Peak

Avalanches: South Face of Ruby had a 60’ wide wind slab release sometime around midday. Ran about 800’ but was not very deep. R1D1.5 but would have taken you over the cliffs.
Weather:
Snowpack: 13” new overnight with little accumulation through the day. New snow well bonded to old crusts and from storm to storm. Hand shears showed a little upside-downness, but didn’t see any associated instabilities. Stiffening some by day’s end from the wind and cold but still not much of a slab.

Avalanches: Cornice drop triggered slab avalanche, E aspect NTL D1.5
Weather:
Snowpack:

IMG_0129

IMG_0128

Avalanches: See photos. Observed 5 fresh natural soft slab avalanches on NE aspects N/ATL, and handful of minor sluffs or harmlessly small pockets.  Two of these larger slides appeared to be several feet deep failing on the 3/6 facet layer as persistent slabs, with wide propagation and the dust layer faintly visible on the bed surface.  One ran naturally sometime this morning.  Two were repeat offenders that ran 3/6, that appeared to fail at the storm interface.
Weather: Scattered to broken clouds. Mild temps. Moderate down-valley valley winds with moderate snow transport visible up high from the NW. No precip.
Snowpack: See video. Traveled on wind-sheltered N/NE aspects below treeline. 25-40 cm of storm snow began to settle under periods of direct solar. No signs of instability within the storm snow or at the storm interface, except some minor cracking on steep rollovers. On a 31 degree, NNE slope, I triggered one large collapse stepping out of my skis to dig a pit, 60 cm deep, on the 3/6 facet layer. Tests produced ECTP 14, SC results on this layer (F to 4F slab over F+, 1-1.5mm rounding facets). As slopes tilted towards sunnier NE aspects, this structure became less concerning because a crust layer from last week’s warm-up appears mid slab (3/14 crust layer, ~1” thick, 1F- hard), and slab below it (from our 3/6 storm) has faceted away.

Climax Chutes, NE aspect NTL. Repeat offender this month. Ran full track, ~1800 vert. SS-N-R2-D2-I

“The Shield” on Scarp Ridge. NE aspect ATL. SS-N-R3-D2-O

Schuylkill Ridge. NE aspect NTL. Repeat offender this month. SS-N-R2-D2-I

Schuylkill Ridge. NE aspect NTL. SS-N-R1-D1-U

Schuylkill Ridge. NE aspect NTL. Ran naturally today. SS-N-R2-D2-O.

Avalanches: NA:
No cracking, collapsing, or whumping on skin track in an extremely heavily used area.
Weather: Dawn:
S-1 to S1 snowfall with light to moderate winds transporting snow
Cold temperatures
Snowpack: Less than 8 cm of new cold snow with about 2.5 cm blown back into low skin tracks

Avalanches: A skier triggered collapse at ridgeline initiated a small slab avalanche on a northeast facing slope near treeline. The slab was about 14″ thick, and failed on the 3/6 facet layer. SS-AS-R1-D1-O. This slope failed nearly full-width last storm on the same layer (see the last photo in this ob), and we basically just cleaned out a piece of hangfire with today’s slide. Otherwise, I would have expected a more impressive avalanche in terms of size and propagation.
Weather: Broken to overcast skies. No precip to S-1. Cool temps. Strong, northwest winds, with brief periods of light to moderate transport.
Snowpack: See video. ~3″ of dense new snow in wind-sheltered BTL slopes, heavily redistributed by westerly winds at all elevations. 6″ drifts below treeline, and up to 18″ 4F drifts near treeline. Largest drifts below ridgelines and patches of scoured and pockets of loaded further down slope. On drifted terrain features, we skier triggered shooting cracks on the crusty storm interface on various aspects/elevations. See photos. On a windloaded feature on a north aspect NTL, we got repeatable moderate ECTP results on the dusty 3/6 facet layer (fist hard, 1-1.5 mm facets), about 18″ deep. The slab appeared to be the most variable component of this north-facing persistent slab distribution; scoured away by winds in some places, loaded in others. We got 2 moderate collapses on this layer on low angle, northerly slopes near treeline, and got shooting cracks below treeline on this layer on north facing wind drifted pockets, ~6″ deep.

Dusty 3/6 facet layer, about 12-18″ deep, produced propagating results, collapses, and a small skier triggered pocket on northerly aspects NTL.

Shooting cracks on storm interface, ~10-15″ deep below a windloaded ridgeline, SE aspect NTL.

Shooting cracks on storm interface, ~10-15″ deep below a windloaded ridgeline, SE aspect NTL.

Collapsing and shooting cracks on a north aspect NTL, on the 3/6 facet layer.

Cracks and small pockets on E aspect BTL, on crusty storm interface