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Eddy Mountains

Location Name: 
Mt Eddy
Mt Eddy
Date and time of observation: 
Tue, 01/17/2023 - 1:54pm
Observation made by: 
Red Flags:
Recent loading by new snow, wind, or rain

Location Map

96067 Mount Shasta , CA
United States
41° 21' 45.9756" N, 122° 33' 2.5056" W
California US

Snowpack Observations


Eddy Mountains: Snow started just above 5,000 feet. The snowpack displayed a right-side-up structure with a stubborn weak layer 55 cm down on a northeast aspect. Surface hoar, 1-2 cm large, completely covered east and northeast facing slopes from below treeline to near treeline. Large cornices loomed overhead near treeline on E-NE-N ridgelines, some of which had signs of old debris below them. I saw no evidence of old or recent avalanche activity. A brisk wind was blowing from the north, but not strong enough to transport any new snow. Southerly aspects were seemingly shallower than the northern.

  • Observation Location: Mt Eddy
  • Elevation: 7,000 ft
  • Date: 2023.01.17
  • Time: 0150
  • Observer: E. Falconer
  • Sky Conditions: Clear (CLR) 
  • Current Precipitation: Type - NO 
  • Air Temperature: [?] °F
  • Surface Penetration: Ski penetration (PS) = 9 in (15 cm), boot penetration (PF) = 177 in (40 cm)
  • Total Snow Depth (HS): 60 in (150cm)
  • 24-hour New Snow Depth (HN24): 0
  • 24-hour New Snow Water Equivalent (HN24W): 0
  • Wind Direction: North 
  • Wind Speed: Calm (C), 0 mi/hr | Light (L), 1-16 mi/hr, twigs in motion
  • Column & Block Tests:
    • Slope Angle & Aspect 17° NE
    • ECTP#23-↓ [?] in (55 cm)
    • CT#14-SC-↓ [?] in (55 cm)



  • east facing ridge line with cornice
  • Looking toward Mt Shasta
  • East facing slope below treeline hosting surface hoar
  • Near treeline conditions
  • Quite large northeast facing cornice near treeline
  • ECTP23-55 cm down. Layer of concern
  • 100 cm of new snow since Jan 12th with density breaks in-between
  • 1-2 cm large surface hoar crystals below treeline
  • Roller balls on south aspect

Weather Observations


Cloud Cover: 
Blowing Snow: 
Accumulation rate: 
Air temperature: 
Below Freezing
Air temperature trend: 
Wind Speed: 
Wind Direction: