Broken Top; surface hoar, dry loose, wind slab

RED FLAGS
Recent avalanche activity
Whumpfing sounds or cracks
Observation Date/Time:
Tue, Mar 10, 2020 - 9:00 AM
Reporter(s):
Miles Britton
Location/Elevation:
Broken Top Area / 7400'
Report Type:
Snow Conditions   Avalanche Activity  
Travel Mode:
Ski or Snowboard  

Written Report:
Touring out from the Broken Top trailhead we found widespread surface hoar 2-3mm in size. We observed wind slabs on an isolated terrain feature: a 35° lee slope at 7400' with a SE aspect where we found one-finger hard wind slab that was ~3cm thick sitting above 10cm of fist hard snow, which interfaced with the melt freeze crust beneath. We observed shooting cracks traveling through this isolated terrain feature. Hand shear tests had easy results. We did not travel near any other lee slopes.

We observed numerous naturally triggered Dry Loose avalanches in the Broken Top Bowl, we toured to the ridge above Little Crater Creek for this ob. Pucker Up, 9 o'clock, 11 o'clock & a la mode all had evidence of recent avalanche activity. Smaller steep terrain throughout the bowl had the same pattern of dry loose activity.

10:00 @ 7400' skies were few, 24°F (Moon Mountain Temp), light SW winds, no precip and no signs of blowing snow.
12:00 @ 8100' skies were few, 31°F (Moon Mountain Temp), light SW winds, no precip and no signs of blowing snow.

We skied low angle slopes, ski quality was good!

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