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
12/28/2017 - 10:00
Snowpack Observation 		Tamarack Peak - Far E Ridge
Mount Rose Area 		Faceted weak layer prior to attempting to squeeze into a ball.Facets after attempting to squeeze into a ball. Loose dry crystals. Forecaster
12/27/2017 - 11:00
Snowpack Observation 		Silver Peak
Cabin Creek, Deep Creek, or Pole Creek Area 		Skier triggered crack connects between the POV ski and ski partner.High contrast version of same photo to highlight crack.High contrast version of same crack, as viewed from the other end.Facets from the problematic weak layer.More facets from the same problematic weak layer. Forecaster
12/26/2017 - 12:00
Snowpack Observation 		Rubicon Peak
West Shore Area 		2m ECTP12 on a small isolated N facing slope where a hard wind slab existed on top of very weak snow. This area was very small and isolated and would not involve enough snow to bury a person if it did break. Minor cracking around my skis on a N aspect @ 8440 ft.Coverage on a N aspect @ 7200 ft. Forecaster
12/26/2017 - 11:00
Snowpack Observation 		400 m WSW of Deep Creek Peak
Cabin Creek, Deep Creek, or Pole Creek Area 		Guide
Donner Summit Avalanche Semina
12/25/2017 - 12:00
Snowpack Observation 		Black Butte
Carson Pass Area 		Professional Observer
12/23/2017 - 14:30
Snowpack Observation 		Andesite Ridge
Donner Summit Area 		Wind loaded area on Andesite RidgeCloud cover and thin coverage on S. side of Castle Peak Educator
Tahoe Mountain Scho
12/23/2017 - 11:00
Snowpack Observation 		Incline Lake Peak/Slab Cliffs
Mount Rose Area 		3-4'' of recent storm snow on top of old near surface facets with a deteriorating rain crust below.Minor wind loading of E aspect with small cornice formation from the recent W/SW winds. Forecaster
12/23/2017 - 10:00
Snowpack Observation 		Approach to tamarack peak
Mount Rose Area 		Public
12/22/2017 - 13:30
Snowpack Observation 		Round Top
Carson Pass Area 		Wind sculpted terrain on Round Top Public
12/22/2017 - 12:30
Snowpack Observation 		Andesite
Donner Summit Area 		Guide
Alpenglow Expeditio
12/22/2017 - 12:00
Snowpack Observation 		Rubicon Peak
West Shore Area 		Snow coverage on N aspect at 7800'.Snow coverage on N aspect at 8600'. Forecaster
12/22/2017 - 11:00
Snowpack Observation 		Alhambra Mine gulch
Carson Pass Area 		Variable conditions on a north east facing slopeOld crown below east facing ridgePit adjacent to old crownCrust on top of NSFs failed upon isolation or a single CT tapECTs didn't propagateSastrugi from previous east windIceMeiss Meadows Professional Observer
12/21/2017 - 14:00
Snowpack Observation 		Red Lake Peak
Carson Pass Area 		Loose weak snow below the new snow (facets). Forecaster
12/21/2017 - 12:00
Snowpack Observation 		Meiss Headwaters
Carson Pass Area 		Professional Observer
12/21/2017 - 11:00
Snowpack Observation 		Andesite Peak
Donner Summit Area 		Wind transport of snow at treeline.The maximum extent of cracking seen today in new wind slabs on W-NW aspects. Small 1.5m crack off tip of right ski.Cracking of undercut wind slab on NE aspect at treeline. Forecaster

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