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Storm conditions on Mount Shasta, Green Butte west aspect

Location Name: 
Storm conditions on Mount Shasta, Green Butte west aspect
Region: 
Mt. Shasta
Date and time of observation: 
Sat, 12/07/2019 - 1:30pm
Observation made by: 
Forecaster
Red Flags: 
Recent loading by new snow, wind, or rain

Location Map

96067 Mount Shasta , CA
United States
41° 22' 9.246" N, 122° 13' 14.8656" W
California US

Snowpack Observations

Details

23 inches of new snow was observed at 8,300 feet on a west aspect of Green Butte at 1300 hours (12.07.2019). Snow surfaces was supportable and smooth. Ski penetrations were 6 to 8 inches while boot penetration was 20 inches. Some evidence of wind effect in the form of small drifts and wind pillows were observed. Poor slab properties and overall stable conditions were observed. 

  • 20191207 @ 1300 hrs - Sorenson - Mount Shasta, Green Butte to 8,600 below, near and above treeline during the storm
  • SKY: Obscured 100%, foggy, visibility < .25 mile
  • PRECIP: Snowing heavy at times, > 1in/hr, raining below 6,000 feet. 
  • BLOWING SNOW: yes, in isolated, exposed areas above treeline 
  • AIR TEMP: 0845 hour = 32 °F @ 6,900 feet, 1100 hour = 29.3°F @ 7,600, 1315 hour = 29.5 °F @ 8,600 feet
  • SURFACE PEN: Ski 6-8 inches; Boot: 20-24 inches. Soft new snow over hard old snow  
  • Height of New Snow (HN): 23 inches 
  • Column test results: 
    • CT3 ↓ 3 inches (10 cm) PC Q3
    • CT6 ↓  7 inches (20 cm) PC Q3
    • CT14 ↓ 11 inches (30 cm) BRK Q3
    • CTH ↓ 16 inches (42 cm) SP Q1
    • ECTP 22 ↓ 16 inches (42 cm) SP Q1
    • ECTP 22 ↓ 16 inches (42 cm) SP Q1

Photos

  • Small wind pillow
  • Looking west from Green Butte ridge 8300 feet

Weather Observations

Statistics

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