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Bunny Flat - Old Ski Bowl

Location Name: 
Mount Shasta
Mt. Shasta
Date and time of observation: 
Wed, 01/11/2023 - 2:30pm
Observation made by: 
Red Flags:
Recent loading by new snow, wind, or rain

Location Map

96067 Mount Shasta , CA
United States
41° 21' 52.0344" N, 122° 12' 23.0832" W
California US

Snowpack Observations


01.11.23 - The Everitt Memorial Highway remains closed. Took power line to Old Ski Bowl via snow machine route from town. Today was a repeat of yesterday...only the snow keeps getting deeper. Really deep. Experts only snowmobiling. Thigh to waist deep if you're not on a snowmobile, skis or snowshoes. Another stormy day with poor, flat visibility and a slow but steady trickle of precipitation, with most accumulation above 6,000 feet. The day had a similar feel to the day prior. Red flags of avalanche danger were subtle below and near treeline. Fresh storm snow struggled to slab up below treeline, and I didn't notice any snow behaving badly. Near treeline at 8,000 feet on an easterly aspect, standard ECT and CT stability tests did not produce failures, but a careful "burp-the-baby" test highlighted a density weakness 25 cm from the top of the snowpack. (see photo) This weakness was likely the break in between the two systems of the past 48 hours. Observations from above treeline were impossible due to whiteout conditions. A few glimpses caught view of ample spin drift off ridges. Predominant wind direction has been out of the south/southeast. South wind mean over the past 24 hours is 10 mi/hr (Gray Butte wx station). Areas with wind near and above treeline hosted the best slab properties and represented the highest avalanche risk for the day.

  • Observation Location: Bunny Flat / Old Ski Bowl
  • Elevation: Town to 8,000 feet
  • Date: 20230111
  • Time: 1500 hours
  • Observer: Meyers
  • Sky Conditions: Obscured (X)]
  • Current Precipitation: Type - SN, Rate - S-1 
  • Air Temperature: 24 °F
  • Surface Penetration: Boot penetration (PF) = 2-3 feet
  • Total Snow Depth (HS): 139 in (OSB wx station)
  • 24-hour New Snow Depth (HN24): 3-6 in 
  • 24-hour New Snow Water Equivalent (HN24W):  0.73 in ([?] cm)
  • Wind Direction: S 
  • Wind Speed: [Calm (C), 0 mi/hr | Light (L), 1-16 mi/hr, twigs in motion
  • Column & Block Tests:
    • ECTX / CTN
    • Burb the Baby - weakness at density change, 25 cm down


  • Bunny Flat on 1.11.23 / 6,950 feet
  • Bunny Flat on 1.11.23 / 6,950 feet
  • Inside restroom foyer
  • 145 cm snow (drift) since January 5th when restrooms were last shoveled out
  • Old Ski Bowl weather station check. The snow depth sensor is 20 feet off the ground without snow
  • Pit location and glimpse of Green Butte from near treeline
  • Pit location and glimpse of Green Butte from near treeline
  • Burp the baby test highlighted a weakness in the storm snow 25 cm down from the surface
  • Burp the baby test highlighted a weakness in the storm snow 25 cm down from the surface

Weather Observations


Weather Data - Past 24 hours - Gray Butte/Old Ski Bowl combined:


Cloud Cover: 
100% of the sky covered by clouds
Blowing Snow: 
Accumulation rate: 
Less than 1 in. per hour
Air temperature: 
Below Freezing
Air temperature trend: 
Wind Speed: 
Wind Direction: