Patterson Center Couloir
Snowpackdustin.mclachlan · Feb 23, 2020 · West Side 93N
Quick report
- Weather
- cold, cloudy
- Ride Type
- alpineSlopes, steepSlopes
- Riding Quality
- good
- Snow Conditions
- hard, powder
Good conditions on the Patterson couloirs on Sunday. Observed evidence of loose dry slough in the couloir and on adjacent steep/overhead terrain, probably from the snowfall/wind combo the day before. No avalanches observed on the terrain visible from the route. The top 20 m was wind effected and the snowpack degraded to 30-60 cm wind slab on facets. See "snowpack" for pit results at the top of the fan.
Snowpack
- Depth
- 230
- Obs Type
- point
- Site Aspect
- NE
- Test Fracture
- resistant
- Site Elevation
- 1900
- Ski Penetration
- 5
- Test Initiation
- moderate
- Foot Penetration
- 30
- Sled Penetration
- 0
- Test Failure Depth
- 15
- Site Elevation Band
- tln
- Surface Conditions
- newSnow, variable
At base of couloir / top of fan: CT18 RP down 10-15 cm. ECTN Ascending couloir: RP hand shear in top 15-30 (depth varied depending on slough).