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Southside: Avalanche Gulch - Green Butte/Sargent Ridges - Old Ski Bowl

Location Name: 
Southside Mount Shasta
Region: 
Mt. Shasta
Date and time of observation: 
Fri, 02/14/2020 - 2:30pm
Observation made by: 
Forecaster

Location Map

96067 Mount Shasta , CA
United States
41° 22' 56.0856" N, 122° 12' 30.8124" W
California US

Snowpack Observations

Details

DATE: February 14, 2020 (20200215)

TIME: 1430 hrs

OBSERVER: Meyers

LOCATION: Avalanche Gulch, Green Butte and Sargents Ridges, Old Ski Bowl

SKY CONDITION: Clear

PRECIPITATION TYPE/RATE: None

BLOWING SNOW: None

AIR TEMPERATURE: 36 deg F

SURFACE PENETRABILITY: 0-4 inches (10 cm) 

HEIGHT OF SNOWPACK (HS): ~65 inches (165 cm) 

HEIGHT OF NEW SNOW (HN):

WIND: moderate, gusty, north/northwest

NOTES: Variable snow surface conditions exist on all aspects. Decent melt-freeze conditions and corn-like snow below 9,000 feet on E-SE-S-SW-W aspects. Above 9,000 feet, snow surfaces transition to mostly firm conditions with a mix of breakable crusts, pockets of soft snow, icy patches, and raised sastrugi scabs. Shaded, northerly aspects remain crusty all day. The Heart and the SW face of Sargents Ridge are completely exposed. In Avalanche Gulch above Helen Lake, rocks are strewn all over the snowpack. No sign(s) of avalanche danger.

Photos

  • Old Ski Bowl and Sargents Ridge, skyline right
  • Green Butte left, Old Ski Bowl from Wilderness boundary east
  • Green Butte left, Old Ski Bowl from Wilderness boundary east
  • North facing slopes firm and crusty, even during warmest time of day
  • North facing slopes with Old Ski Bowl in background
  • Northerly facing slopes representative photo, wilderness boundary east, Old Ski Bowl
  • Representative snow surfaces, shady aspects
  • Cinder debris collecting in depressions from high wind over the past couple weeks
  • Green Butte Ridge, 9,800 feet, upper Avalanche Gulch
  • Lower Avalanche Gulch
  • Casaval Ridge/Avalanche Gulch, mid-elevation
  • Representative photo of mid-upper elevation snow surfaces

Weather Observations

Statistics

Cloud Cover: 
Clear
Blowing Snow: 
No
Precipitation: 
None
Accumulation rate: 
None
Air temperature: 
Above Freezing
Air temperature trend: 
Cooling
Wind Direction: 
Northwest