State of the Snowpack for 4/13/2019 - 4/19/2019

Dates of the Week: 
4/13/2019 to 4/19/2019
Avalanche Problems: 
General Snowpack Structure: 
  • Mostly melt/freeze conditions with a period of new snow transitioning to wet snow after the small storm. 
  • Snowpack below the wet snow generally deep and well consolidated.
Weather Events: 
  • Lots of sunshine and well above normal temperatures for most of the week.
  • One small spring storm Monday night with limited new snow accumulation.

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
04/19/2019 - 10:30 Yuba Pass Yuba Pass Area Snowpack Observation 1.5 inches of very week surface crust remaining at 10 am. Deep boot penetration in sunny flats at 10 am. Wet snow surface sluffing, moving in the direction of loose wet instability. Deep, unsupportable wet snow with no signs of any remaining refreeze at 10:50 am. Forecaster
04/18/2019 - 10:30 Rose Knob Mount Rose Area Avalanche Observation Knee deep wet snow on an ENE aspect at 8700 ft. at 10:45 am. Ankle deep wet snow at the trail head at 9 am. Boot top deep wet snow on a SE aspect at 8600 ft. at 9:45 am D1 Loose wet avalanche that happened yesterday afternoon. Forecaster
04/18/2019 - 10:30 Mt. Judah Donner Summit Area Snowpack Observation 10:30am on East aspect at 8200' was wet and punchy snow with shin deep boot pen. Loose wet activity was limited in the morning even with unsupportable snow conditions.  Widespread loose wet avalanche activity over the past week on steep slopes. Forecaster
04/17/2019 - 11:30 Stevens Peak Carson Pass Area Avalanche Observation D1 loose wet on an E facing slope on Stevens Skier triggered rollerballs and pinwheels Boot top deep wet snow with a ski supportable but not boot supportable crust. Wind affected colder snow on the ridge above 9300 ft. Forecaster
04/16/2019 - 11:00 Hidden Peak West Shore Area Avalanche Observation Intentionally skier triggered loose wet avalanche size D1.5.  E aspect, 8500', 35 + degree slope. Small roller ball activity from ski turns involving the recent 3-4'' of new snow. Below 8000' at 10am, 2-3'' of new snow on top of 4F wet snow.  Little to no overnight refreeze at lower elevations below 8000'. Minor cracking in wind loaded terrain.  Wind transported snow was limited to near ridgelines and did not extend downslope very far. E face of Crag Peak.  Small D1 natural loose wet avalanches that occurred by 11am this morning. Forecaster
04/16/2019 - 09:30 Powderhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation Less than an inch of new snow just below 8000 feet. Above tree line there was very minor cracking in wind loaded areas. Small cohesive chunks broke on test slopes, but no larger propagation observed. Professional Observer
04/15/2019 - 11:30 Jakes Peak West Shore Area Snowpack Observation Mostly cloudy skies with some partial sun breaks. 8000', E aspect, at 11:15am.  1-2'' of soft wet snow on top of a 2'' 1f MF crust on top of more wet snow. Forecaster
04/14/2019 - 14:00 Angora Peak Desolation Wilderness Area (including Emerald Bay) Snowpack Observation Professional Observer
04/14/2019 - 11:30 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Mostly cloudy skies with some sun breaks. Looking south along the Crest through the Tahoe Basin. Potentially more sun further south. Thick cloud cover to the west of the Silver Peak at 11:20am. Forecaster