These observations document past conditions at a small and variable scale. They are not to be confused with an avalanche forecast. They come from a variety of sources. We can only vouch for the quality of those produced by the SAC forecasters and professional observers.
Date and time of observation or avalanche occurrence Location Media Observation made by
03/28/2018 - 09:30

Snowpack Observation
Flagpole Peak

Echo Summit Area
By 9am rollerballs and small loose wet activity was occurring naturally off steep rock faces. Large old crown across entire lower pitch of Ralston peak. Loose wet ski cut results before 10am on east facing terrain. Professional Observer
03/28/2018 - 11:00

Snowpack Observation
Jake's Peak

West Shore Area
Roller balls, Pinwheels, and loose wet sluffs triggered on a E-NE aspect at 8600 ft. at 10:45 am Ski cut triggered pinwheels and roller balls on an E aspect at 9040 ft. at 11:15 am. Ankle deep wet surface snow on a SW aspect at 7500 ft. at 10:30 am. Forecaster
03/29/2018 - 10:00

Snowpack Observation
Ralston south side

Echo Summit Area
Public
03/29/2018 - 10:00

Snowpack Observation
Mt. Judah

Donner Summit Area
Runnels in the snow surface indicating drainage and melting. 2 to 3 cm of corn snow on a supportable crust at 10:15 am at 7800 ft. on a SE aspect Wet snow below the frozen melt freeze crust on a SSE aspect Wind scoured surfaces on a NE aspect Breakable crust on a sheltered N aspect at 7800 ft. Forecaster
03/30/2018 - 10:00

Snowpack Observation
Angora Peak

Echo Summit Area
Boot penetration to the ground at 830am on a south facing slope at 6700 feet. Surface was still frozen, with less than 1cm ski penetration. On a north facing aspect, there was a crust but soft wintery (near surface facets) below. South facing slopes around 8300 feet were soft and almost corn at 10:30am. The sound of running water was loud coming down Angora bowl onto Angora lake. Professional Observer
03/30/2018 - 11:00

Snowpack Observation
Stevens Peak

Carson Pass Area
25 cm of snow surface refreeze on at 8,000' on E aspect at 10:50am Supportable crust, just entering melt phase at ~9,000' at 11:25am. Skier triggered roller ball at 8,100' on E aspect at 12:20pm. Forecaster
03/30/2018 - 11:30

Snowpack Observation
Chickadee Ridge

Mount Rose Area
Skier triggered pinwheels on a SE aspect at 8500 ft. at 11:20 am. Boot top deep wet snow on a SE aspect at 8500 ft. at 11:20 am. 4 to 6 inch deep ski penetration into wet snow on S aspect at 8800 ft. at noon. Forecaster
03/31/2018 - 10:30

Snowpack Observation
Incline Peak

Mount Rose Area
Cracking and hollowed out snow along cornice Chuncks of broken cornice Public
03/31/2018 - 10:45

Snowpack Observation
Silver Peak

Cabin Creek, Deep Creek, or Pole Creek Area
Site of crown profile. 1 of 3 deep slab avalanches on N aspect terrain along the E ridge of SIlver. PST prepped to test Feb facets that was the failure layer in the avalanche. Another of 3 deep slab avalanches on N aspect terrain along the E ridge of SIlver. Forecaster
03/31/2018 - 14:30

Snowpack Observation
Donner Peak

Donner Summit Area
Guide

Tahoe Mountain Scho
04/01/2018 - 11:45

Snowpack Observation
Red Lake Peak

Carson Pass Area
Limited signs of loose wet instabilities at 11:45am on East Face gullies. Snow was mostly supportable with 3-4'' of wet snow at 8000' at 11:45am. Forecaster
04/02/2018 - 13:00

Snowpack Observation
Mt. Tallac

Desolation Wilderness Area (including Emerald Bay)
Relatively smooth and supportable conditions at the upper elevations. Below 8000' on E aspects at 12:30pm, unsupportable 6-10'' of snow existed on top of talus slopes. Skier triggered D1 in treed area. Forecaster
04/03/2018 - 11:00

Snowpack Observation
Jakes Peak

West Shore Area
Forecaster
04/04/2018 - 11:45

Snowpack Observation
Elephants Hump

Carson Pass Area
Ankle deep boot penetration on an E aspect at 8000 ft. at 12:45 pm. Propogation saw test targetting the Feb facets (the layer my finger is pointing to). The test failed about 1/3 of the way through the column (where the saw is stuck into the block) indicating that fractures can propogate along the weak layer. (PST 50/150 END down 146cm) The Feb. facets that have rounded but still remain a loose layer buried deep in the snowpack. Forecaster
04/04/2018 - 12:00

Snowpack Observation
Mt. Houghton

Mount Rose Area
12:15pm on E aspect at 9400', 4-6'' boot pen. Forecaster

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