Date of Observation: 01/24/2017
Name: CB Patroller
Aspect: West, North West
Elevation: 11,300
Avalanches: SS-AB-R3-D2.5-I, Ran 800′ vertical feet
Weather: Clear, Calm, 20F
Snowpack: 12-36″ New wind loaded snow over Jan. 19 surface hoar
Avalanches: SS-AB-R3-D2.5-I, Ran 800′ vertical feet
Weather: Clear, Calm, 20F
Snowpack: 12-36″ New wind loaded snow over Jan. 19 surface hoar
Avalanches: We did perform a number of informal tests on unsupported slopes and very steep short pitches on E and NE aspects near and above the Gothic road. Some of these showed evidence of past avalanching and had been refreshed with the old crowns almost buried. There was movement underneath the skis, but slabs did not propagate beyond ski tips and tails, but did fail down ~35 on the 1/19 SH Layer.
Weather: Scattered clouds and light winds. Stayed cold all day
Snowpack: We toured up to the meadow beneath the Rental Shop glades and dug on a NE aspect at 10,200 feet. CTM SC results were observed on a mid storm layer 28cm down CTH RP results were observed down 42cm on the 1/19 buried SH Layer. ECTN on the mid storm layer and no cracking down on the buried SH. PST 100/100 down 38 Buried SH layer was not easily observable to the eye where we dug our long column tests. Given sudden results our avoidance of steeper terrain from our trip plan and the bulletin was confirmed.
Avalanches: Fresh wind slab avalanches could be scene on star and pearl pass. Star men’s avalanche looked to be D2R3. Multiple point release avalanches started to naturally occur through out the day in and around the whole bowl.
Weather: 24 inches fresh snow at friends hut
Snowpack: A wind slab covered all aspects of the slopes around pearl pass and around friends hut, even the flat ground right outside friends hut. 24 inches of fresh snow fell at friends hut and high winds continued through the night. The fresh snow started to set up to a storm slab almost immediately. The wind slab was failing on slopes 35 degrees and great on most aspect.
Avalanches: Snow Safety team had one result. SS-AE-R1-D1.5-O Sunny shoulder left. Failed 45cm down on 1.5mm facets above a MFcr. I believe this is the 1/23 interface. We’ve gotten 112″ since the 1/19th and 31″ since 1/23.
Weather: Cold!
Snowpack: H2D 4″ .25SWE.
Avalanches:
Weather:
Snowpack: Traveled near and around Taylor Canyon. HS ~100 cm. Only 6″ or less over the 1/19 interface (crust or NSF, no SH observed), and the upper snowpack is now entirely faceted and weak, with thin faceted crusts on sunnier aspects. Snowpack is quickly faceting throughout. I saw no avalanche concerns other than shallow facet sluffing, and we traveled on numerous steep slopes.
Avalanches: See video. Skier triggered 7 soft slab avalanches 15-20″ deep on the 1/19 surface hoar layer, D1 to D2, depending on terrain size, on E and NE aspects below treeline. One was remote triggered, several were in surprisingly dense aspen trees, several broke onto slope angles as low as 31 and 32 degrees. One broke higher above me than expected and knocked me off my feet. Every slope steep enough to slide went except for slopes that had already naturally avalanched. Also observed a fresh animal triggered and sympathetic slide on a SW aspect below treeline.
Weather: Broken to scattered skies. Minimal precip. Calm winds. Cold temps
Snowpack: The usual bag of tricks aren’t working. No collapsing or cracking observed on low angle terrain, stability tests weren’t concerning, yet every slope we touched steeper than 33 degrees avalanched on surface hoar about 15-20″ deep. Test results were:
SE aspect, 10200 ft in sparse aspens. No surface hoar observed, ECTN H, BRK 30cm deep on small, rounding facets.
NE aspect, 10100 ft in a windsheltered opening. 1mm SH 33 cm deep. ECTN M, PC/BRK on the surface hoar.
In the past 3 days, I have yet to find propagating results in an ECT but getting consistent avalanches on the surface hoar layer. The ECT appears to be unreliable for our current conditions, or else spatial variability is very pronounced.
Avalanches: 18″-20″ persistent slab @ 30-35 degrees, skier triggered – 35 yard crown, debris built to a quick stop around 60 yards below trigger point. Obvious signs of other stress throughout these trees. Advise caution! No damage/injury
Weather:
Snowpack:
Avalanches: Gullies on the NE aspect of the ravine had slid.
Weather: Calm, No Snow,
Snowpack: Did a quick column test and got SP on SS at 40 cm.
Avalanches: Snowmobile triggered slide off Kebler by gravel pit
Weather: COLD (below 0 at 12,000′ all day), overcast skies, Mod SW winds w/ Strong gusts, periods of s-1 with 2″ new at study plot
Snowpack: Lots of collapsing, no movement of snowpack in Irwin Terrain.