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Avalanche Gulch / Old Ski Bowl

Location Name: 
Avalanche Gulch / Old Ski Bowl
Mt. Shasta
Date and time of observation: 
Thu, 12/15/2022 - 11:30am
Observation made by: 
Red Flags:

Location Map

96067 Mount Shasta , CA
United States
41° 22' 40.242" N, 122° 12' 25.4772" W
California US

Snowpack Observations


A wide-ranging tour of the Old Ski Bowl, below, near and above treeline to 10,000 feet on Green Butte Ridge. No recent avalanches or red flags of instability were observed. Snow surfaces are varied. 

Above treeline - scabby wind affect, wild sastrugi features, some several feet tall over moraine convexities and ridges where wind speeds are highest. Other less windy places have moderate to minor surface texturing. Low-lying gullies out of the direct sun still remained soft and smooth.

Near treeline - transitional snow, sun crusts, soft powder, minor wind affect in exposed areas. Roller balls on sunny slopes. 

Below treeline - soft snow in the shade, crusts in the sun. Tree bombs and dripping trees have pounded the snowpack below. Open forest in shady terrain is the best riding.

  • Observation Location: Avalanche Gulch and Old Ski bowl
  • Elevation: 6,950 to 10,000 feet
  • Date: 12.15.2022
  • Time: 1130 - 1430 hours
  • Observer: N Meyers
  • Sky Conditions: Clear (CLR) 
  • Current Precipitation: No
  • Air Temperature: 39 °F
  • Surface Penetration: Ski penetration (PS) = 2-5 in, boot penetration (PF) = 5-10 in
  • Total Snow Depth (HS): 55-70 in
  • 24-hour New Snow Depth (HN24): None
  • 24-hour New Snow Water Equivalent (HN24W): None
  • Wind Direction: E/NE
  • Wind Speed: Calm (C), 0 mi/hr 


  • Small roller balls on sunny, near treeline slopes
  • .5
  • Wild sastrugi features along windy ridges and moraine convexities above treeline
  • Avalanche Gulch / Helen Lake
  • Green Butte Ridge and upper Avalanche Gulch
  • Wind texturing
  • Wind texturing, Green Butte in background
  • A look down the Sacramento Canyon from Old Ski Bowl. Inversions and valley smoke/fog present over the week
  • Sastrugi feature and Green Butte in background
  • East Wilderness boundary in Old Ski Bowl marked by orange snow poles
  • Avalanche Gulch and pine marten tracks. Remember, DOGS are NOT ALLOWED in the MS Wilderness
  • South side, Mt. Shasta

Weather Observations



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