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Green Butte Ridge and Sun Bowl, Mount Shasta

Location Name: 
Green Butte Ridge and Sun Bowl, Mount Shasta
Region: 
Mt. Shasta
Date and time of observation: 
Sat, 01/11/2020 - 2:00pm
Observation made by: 
Forecaster
Red Flags: 
Whumphing noises, shooting cracks, or collapsingRecent loading by new snow, wind, or rain

Location Map

96067 Mount Shasta , CA
United States
41° 22' 7.7556" N, 122° 12' 47.3112" W
California US

Snowpack Observations

Details

January 11th, 2020 - Green Butte Ridge and Sun Bowl, Mount Shasta 

Sorenson

SKY: Broken clearing around 1400

PRECIP: S-1 little accumulation 

BLOWING SNOW: Intense, WNW most of the snow was sublimating or collecting on lower angle terrain

AIR TEMP: 19 F

SURF PEN: Ski = Below treeline: 4-8 inches, Near treeline: 2 inch, above treeline: 0 - 1 inch. 

SNOWPACK(HS):  40 - 50 inches

NEW SNOW(HN): 0-1 inch

WIND: Strong westerly winds with gale force gusts near and above treeline, moderate west wind below treeline.

NOTES: 

Cold temperatures and very light snow showers were observed throughout the morning.  Though snow was falling from the sky, little accumulation was detected due to strong westerly wind. Low density snow, 4 to 7 inches deep, can still be found in protected areas below treeline. Open areas below treeline and near and above treeline terrain has been largely affected by the wind. Westerly aspects are scoured. Variable wind crusts, sastrugi, scoured, and hard snow surfaces exist above treeline. 

Photos

  • Below treeline- open area along ridgeline
  • Near treeline- east facing terrain is where the fresh drifts are forming
  • Near treeline- west facing terrain is scoured
  • Above treeline terrain is scoured
  • Looking up powder bowl, note: hard wind slabs toward bottom of slope
  • Looking southeast at sun bowl
  • Icy spots remain

Videos

Weather Observations

Statistics

Cloud Cover: 
50% of the sky covered by clouds
Blowing Snow: 
Yes
Precipitation: 
Snow
Accumulation rate: 
None
Air temperature: 
Below Freezing
Air temperature trend: 
Static
Wind Speed: 
Gale Force
Wind Direction: 
West