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Conditions Northeast of Mount Shasta

Location Name: 
Rainbow Mountain, NE of Ash Creek Butte
East of Mt Shasta
Date and time of observation: 
Sun, 03/18/2018 - 10:00pm
Observation made by: 
Professional Observer

Location Map

96067 Mount Shasta , CA
United States
41° 28' 56.6832" N, 121° 56' 45.7152" W
California US

Snowpack Observations


Observations during a tour from Pilgrim Creek Snowmobile Park to Rainbow Mountain, northeast of Ash Creek Butte:

  • Snowpack configuration and snow depths similar to Mount Shasta area.
  • Height of storm snow (HST) = 50 cm, height of snow (HS) = 150-200 cm.
  • Ski cuts produced small dry loose avalanches/sloughing in steep north facing terrain (ran slowly but far down slope, not large enough to knock a skier off their feet)
  • Small cornices and windlips at ridgetop
  • No evidence of wind slabs
  • Right side up storm snow and good snowpack structure overall
  • Unreactive results from hand tests and shovel tilt tests
  • Roller balls and pinwheels on steep south facing slopes below treeline
  • Column test results: CT22 non-planar break (BRK) ↓ 30 cm, CT 28 resistant planar (RP) ↓ 75 cm, ECTX x2.
  • Good riding conditions on groomed and ungroomed snowmobile trails


  • Test Profile, 6200 ft, North Facing, 32 Degree Slope
  • Rainbow Mountain

Weather Observations


Cloud Cover: 
50% of the sky covered by clouds
Blowing Snow: 
Accumulation rate: 
Air temperature: 
Below Freezing
Air temperature trend: 
Wind Speed: 
Wind Direction: