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Old Ski Bowl - Approaching Weather

Location Name: 
Old Ski Bowl
Mt. Shasta
Date and time of observation: 
Fri, 02/10/2023 - 1:00pm
Observation made by: 
Red Flags:

Location Map

96067 Mount Shasta , CA
United States
41° 22' 37.2216" N, 122° 12' 17.784" W
California US

Snowpack Observations


With some weather expected overnight through tomorrow, Nick and I chose to assess the Old Ski Bowl for current surface and wind conditions.

  • Below and near treeline, wind was light to calm with no wind effect on the surface. Surprisingly soft snow could be found in the trees, while open areas had a surface sun crust.
  • Above treeline, surface conditions were expectedly variable. Large sections of ice, sastrugi, and wind deposited snow could be found across the upper Old Ski Bowl. Snowmobile penetration ranged from 4 inches of wind effected snow to no penetration on ice. Wind was light out of the south. 
  • Visibility changed quickly during the day. Clouds passed through, obscuring any visibility in the Old Ski Bowl, and later clearing to blue skys with excellent visibility of the upper mountain.
  • Clouds could be seen developing to the west, with some possible precipitation over the Eddy Mountains. 

No signs of snowpack instability were observed.

  • Observation Location: Old Ski Bowl
  • Elevation: 9,000 feet
  • Date: 20230210
  • Time: 1300
  • Observer: S. Clairmont and N. Meyers
  • Sky Conditions: Broken (BKN)
  • Current Precipitation: Type - NO
  • Air Temperature: 23 °F
  • Surface Penetration: Snowmobile penetration = 0 - 4 in (0 - 10 cm)
  • Total Snow Depth (HS): 129 in (328 cm)
  • 24-hour New Snow Depth (HN24): 0 in (0 cm)
  • Wind Direction: SE
  • Wind Speed: Light (L), 1-16 mi/hr, twigs in motion


  • Wind effect on ridgeline
  • Clearing visibility
  • Sastrugi above treeline
  • Variable surfaces up high
  • Sled penetration
  • Ice
  • Variable surface

Weather Observations


Cloud Cover: 
75% of the sky covered by clouds
Blowing Snow: 
Accumulation rate: 
Air temperature: 
Below Freezing
Air temperature trend: 
Wind Speed: 
Wind Direction: