Gumboot Lake

Location Name:

Gumboot Lake

Region:

Mt. Shasta

Date and time of observation:

Tue, 01/14/2020 - 1:00pm

Observation made by:

Forecaster

Red Flags:

Recent loading by new snow, wind, or rain

Location Map

96067 Mount Shasta , CA

United States

41° 12' 20.9052" N, 122° 30' 42.2712" W

See map: Google Maps

California US

Snowpack Observations

Details

Observations near Gumboot Lake:

TIME: 20200114 - 12:00 to 14:00
ASPECT: Northeast
ELEVATION: 6,400 ft
SKY: Overcast (OVC) then broken (BKN) after 13:00
PRECIPITATION: S1 (1 cm / 0.3 in/hr)
BLOWING SNOW: Yes
TEMPERATURE: 30°F
BOOT / SKI PENENTRATION: 50 cm (20 in) , 7 inches (ski) (20 cm)
HEIGHT OF SNOW (HS): 55 inches
HEIGHT OF NEW SNOW: (HN): HS24: 8 inches (20 cm), HS48: 17 inches (45 cm)
WIND: Productive southwest wind on ridgeline a steady 10-15 mph
COLUMN & BLOCK TESTS: CT2x2 SP down 35 cm, ECTP12 SP down 35 cm

Instabilities in the snowpack were seen. Column and block tests yielded notable failures below a sun crust atop granular unbonded snow. Old layers underneath new snow are a mix of breakable crusts and sugary snow. More weight could cause these layers to fail. Light, steady, southwest winds were building cornices along ridgelines and depositing snow near the top of slopes. Wind slabs and cornices were still small and stubborn to trigger, though some cracking and blocking was observed.