Conditions Northeast of Mount Shasta

Location Name:

Rainbow Mountain, NE of Ash Creek Butte

Region:

East of Mt Shasta

Date and time of observation:

Sun, 03/18/2018 - 10:00pm

Observation made by:

Professional Observer

96067 Mount Shasta , CA

United States

41° 28' 56.6832" N, 121° 56' 45.7152" W

California US

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