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Sunny Day in Old Ski Bowl

Location Name: 
Old Ski Bowl, Mount Shasta
Mt. Shasta
Date and time of observation: 
Sat, 03/13/2021 - 11:00am
Observation made by: 

Location Map

96067 Mount Shasta , CA
United States
41° 21' 41.9724" N, 122° 12' 2.8476" W
California US

Snowpack Observations


It was another beautiful, full blue sky day with virtually no wind in the Old Ski Bowl area. The temperature quickly climbed into the mid-40s ℉ with the sun high in the sky. Snow surfaces are in a state of transition. The previously formed wind crusts became moist and soft in the heat of the day, but it still protects the colder, larger-grained, fist-hard snow below. A quick compression test near the East boundary indicated easy failures on this layer but no propagation in the ECT. Rollerballs on southerly facing slopes, settlement cones, and dripping snow from trees are signs of warming and consolidating snowpack.  A refreeze tonight should lock most lingering instabilities in place. 

  • Observation Location: Old Ski Bowl
  • Elevation: 6900-8300 feet
  • Date: 20210312
  • Time: 0900-1300
  • Observer: Sorenson
  • Sky Conditions: Clear (CLR) 
  • Air Temperature: 45 °F
  • Surface Penetration: Boot penetration (PF) = 27 in (70 cm)
  • Total Snow Depth (HS): 82 in (210 cm)
  • 24-hour New Snow Depth (HN24): 0 in
  • Wind Direction: None
  • Wind Speed: Calm (C)
  • Column & Block Tests:
    • Slope Angle & Aspect: 10º, SE 
    • CT6 SP ↓ 4 in ( 10 cm)
    • ECTX


  • Meadows below treeline have many tracks
  • Snow surfaces in Old Ski Bowl
  • CT6 SP ↓ 4 in ( 10 cm)
  • ECTX
  • Eastern boundary looking up Saint Germain Bowl/ Sargents Ridge
  • Yellow Butte
  • Avalanche Gulch from Bunny

Weather Observations


Cloud Cover: 
Blowing Snow: 
Accumulation rate: 
Air temperature: 
Above Freezing
Air temperature trend: 
Wind Speed: