fbpx Snow Pit with Column Test | Central Oregon Avalanche Center (COAC)
Observation Date/Time:
Sat, Dec 19, 2020 - 9:00 AM

Three Sisters Area / 2250'
Report Type:
Snow Conditions  
Travel Mode:
Ski or Snowboard  
Sky Conditions:
Overcast (> 7/8)
Precip Type/Intensity:
Snow / S1 Light snow
New Snow:
5 cm
Height of Snow (HS):
84 cm
Wind Direction/Speed:
W / Moderate: 17-25 mph

Written Report:
Tumalo Mountain. Dug a snow pit at 2,250 meters on a 15 degree slope near the summit on the W SW side. From ground level - 84cm of snow. 5cm of new snow. Wind slab from 76cm to 78cm. Ice layer at 47cm to 49cm with a weak layer of poorly bonded snow below it. Conducted compression test on a column. CT15 - with planar fracture. Wind driven snowfall. Winds W SW at 15 knots with gusts to 20-25 knots. Air temp 0 degrees. Visibility - poor. Decided to stay out of open bowl with 30+ degree slope.