Snowpack

GTSR - Road Camp

Zachary Miller
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Observation photo 1Observation photo 2Observation photo 3

Quick report

We observed thin snow cover along the GTSR corridor and generally stable conditions during our walk to Road Camp and back. The deepest snow we found was in the (relatively) small remnant mid-winter debris piles along the road. Saw evidence of older avalanches, with the most recent we estimate to have released Saturday during the warm precipitation (HS-N-D2.5-R2). This avalanche had a 1+m crown that had partially blown back in with weekend snow and was located in main Haystack (crown @6800' on a West aspect and ran ~2000'). No other signs of instability observed today.

Weather

Air Temp
28
Cloud Cover
broken
Wind Loading
previous
Rain Elevation
4400'
Recent Snowfall
10
Snow Avail For Transport
small smounts

Light winds and a couple of brief flurries of rimed snowfall throughout the day with generally stable temperatures just below freezing.

Snowpack

We found 10+cm of new settled snow on top of the moist and supportable older snow surface. Observed a subtly wind-affected snow surface on exposed ridgelines but did not see or find any specific wind slabs formed. We dug a quick pit at 6075' on a 35* S aspect with layers of concern primarily being moist or wet weak grains just below recent crusts: - HS175cm - ECTN24@147 x3 and CTM18@ 147cm SC on 4F wet polycrystals below the recent nearly refrozen snow surface - April 5 crust @156cm - 6cm thick and P- hard - Equinox crust @ 112cm - 7cm thick and P- hard (with 1F weak moist grains just below) - No clear evidence of Feb 3rd crust - too wet? - Aside from surface new snow, the remainder of the snowpack was moist or wet