Observation: Snowbasin Backcountry

Observation Date
2/16/2019
Observer Name
Bill Hunt
Region
Ogden » Snowbasin Backcountry
Location Name or Route
Snowbasin backcountry
Red Flags
Red Flags
Heavy Snowfall
Wind Loading
Cracking
Red Flags Comments
Sustained winds out of the W/NW made less predictable hard slabs a continuing possibility.
Avalanche Problem #1
Problem
New Snow
Trend
Same
Problem #1 Comments
Some cracking in the new snow on safer test slopes, not super sensitive, which makes slope cuts somewhat less reliable. Cracking on about a third of test slopes, from 8500 and 7400' locations, limited to 5 to 8" of new snow.
Comments
Heavy rime at 9400 and 9000', below. The snow surface was heavily wind-affected as well as rime-affected. The foggy rime rolled in around 11AM today, but clearly its been occurring quite a bit recently. The rime seems to be penetrating the snow surface, as well as falling from the trees; these appear to be stabilizing forces, but the wind makes it unpredictable; carvable styrofoam with some a few soft pockets above 9000' (N), somewhat softer below 9000' (N, NE) with a bit of cracking in the new snow. Some minor cracking around 7400' (E) was interesting, in comparatively sheltered locations. Test cuts seem effective for the new snow, but not for the deeper slab potential, particularly harder wind slab.
Next, some substantial drifts even in semi-sheltered trees around 8900', showing the continued wind action. Travel limited to safer test slopes due to the difficult-to-predict conditions.
Next, about 3" of new snow and wind transport, occurred in 30 minutes, between a couple laps. With the wind I'd call it Considerable tomorrow above 8500, and Moderate 8500 to 7000, on the northerly to E aspects. Hoping to find better snow in mid to lower elevations tomorrow, and keep slope angles below the low 30s.
Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
Considerable