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Green Butte Ridge

Location Name: 
Green Butte Ridge
Region: 
Mt. Shasta
Date and time of observation: 
Tue, 01/21/2020 - 3:00pm
Observation made by: 
Forecaster
Red Flags: 
Recent loading by new snow, wind, or rain

Location Map

96067 Mount Shasta , CA
United States
41° 21' 55.5912" N, 122° 13' 29.316" W
California US

Snowpack Observations

Details

Observations on Green Butte Ridge:

  • TIME: 20200121 - 15:00
  • ASPECT: Northwest
  • ELEVATION: 7,900 ft
  • SKY: Obscured
  • PRECIPITATION: S1-S2 (1-2 cm/hr)
  • BLOWING SNOW: No
  • TEMPERATURE: 25°F
  • BOOT / SKI PENENTRATION: 60 cm (24 in) , 20 cm (8 in)
  • HEIGHT OF SNOW (HS): 195 cm (77 in)
  • HEIGHT OF STORM SNOW (HST): 15 cm (6 in)
  • WIND: Calm to light, variable direction
  • COLUMN & BLOCK TESTS:
    • CT4x2 ↓ 20 cm SP
    • CT21 ↓ 78 cm RP
    • CT15 ↓ 78 cm SP
    • CT8 ↓ 40 cm SP
    • ECTX

Three to six inches of new snow was seen touring from Bunny Flat above treeline on Green Butte Ridge. Blocking, cracking, and column tests indicated the possible presence of a storm slab breaking just below a sun crust below the new / old snow interface. A sugary faceted layer with 0.5 mm grains exists below an ice crust about 78 cm down. Failures on this layer were moderate to hard. No notable ECT failures were achieved.

No signs of a wind slab problem were seen. Snow surfaces below, near, and above treeline had no wind affect. Winds were unusually calm to light.

Photos

  • Blocking and cracking within the new snow
  • Ski penetration 8 inches
  • Snow profile
  • Snow profile

Videos

Weather Observations

Statistics

Cloud Cover: 
100% of the sky covered by clouds
Blowing Snow: 
No
Precipitation: 
Snow
Accumulation rate: 
Less than 1 in. per hour
Air temperature: 
Below Freezing
Air temperature trend: 
Warming
Wind Speed: 
Calm