State of the Snowpack for 12/1/2018 - 12/7/2018

Dates of the Week: 
12/1/2018 to 12/7/2018
Avalanche Problems: 
General Snowpack Structure: 
  • Dec 4 surface hoar layer buried under 3 to 6 inches of new snow in many areas.
  • Mid and lower snowpack well consolidated and without problematic weak layers.
Weather Events: 
  • New snow event on Dec 1 of 8 to 10 inches.
  • Widespread surface hoar formation 4 to 15 mm buried on Dec 4 under 2 to 5 inches of new new snow.
  • Weak high pressure building at the end of the week.

Central Sierra Nevada / Lake Tahoe Snowpack, Weather, and Avalanche Observations for California and Nevada from SAC

Date and time of observation or avalanche occurrence Location Region Observation Type Photos Snowpack, Avalanche, Weather Videos Snowpit videos (tests, etc) Observation made by
12/04/2018 - 11:15 Broken Glass Mount Rose Area Snowpack Observation Public
12/04/2018 - 03:00 Thunder Saddle Carson Pass Area Snowpack Observation Public
12/03/2018 - 13:00 Rubicon peak West Shore Area Snowpack Observation Surface hoar around 7600ft/ NE Looking west into desolation Guide
12/03/2018 - 12:30 Mt. Judah Donner Summit Area Snowpack Observation 10 - 15 mm surface hoar was widespread in the Mt. Judah area. IT did start to melt some on slopes with direct sun-exposure later in the day. Cornice pieces and loose dry surface hoar sluffs on Wild Flower Ridge. Cloud cover rolling into the area in the afternoon. Forecaster
12/03/2018 - 12:00 Slab Cliffs Mount Rose Area Snowpack Observation Forecaster
12/03/2018 - 12:00 Jakes Peak West Shore Area Snowpack Observation Public
12/03/2018 - 12:00 Red Lake Peak Carson Pass Area Snowpack Observation Surface Hoar growing on flat terrain near base of Red Lake Peak. Previous skier triggered slide in sun in middle of photo. Natural slide on left of photo and skier triggered slide on far right. Cracking in front of ski tip. Professional Observer