You are here
Castle Lake - Test Profile, Old Avalanches, General Conditions
Location Name:Castle Lake
Date and time of observation:Mon, 02/18/2019 - 1:30pm
Observation made by:Professional Observer
96067 Mount Shasta , CA
United States41° 13' 19.9776" N, 122° 23' 20.3388" W
Observations around Castle Lake:
- Height of storm snow (HST): 30 cm (12 in), snow light and dry, sitting atop thick rain crust from 2/13.
- Height of snow (HS): 300 cm
- Ridges and open areas are wind textured and scoured. Several slopes over 35 degrees are old bed surfaces littered with cornice and avalanche debris.
- Treed areas and aspects protected from the wind are holding the best snow.
- Evidence of old avalanches and cornice breaks exist on Right Peak and Upper and Lower Middle Peak (see images).
- A D1.5 skier triggered avalanche occurred on a west facing aspect. Hard wind slab broke sympathetically to a less steep slope. It fractured just above an ice layer at a convexity. Slope angle was near 35 degrees. See observation for details.
- Test profile indicated strong temperature gradient across rain crust from 2/13/19 and newer light snow. Minor faceting has occurred in snowpack. No notable column tests results.
Air temperature:Below Freezing
Air temperature trend:Static