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
02/17/2017 - 11:00
Snowpack Observation 		Andesite Peak
Donner Summit Area 		Wind loading and cornice formation on W aspect from the SE winds.Small reactive wind slab on W aspect, 8200', 2-6'' deep.Cracking and shooting cracks on wind loaded test slopes. Forecaster
02/16/2017 - 13:17
Snowpack Observation 		1/2 way up Powderhouse
Luther Pass Area (including Job and Freel) 		Wandering crust below 70cm Rain CrustSlope angleRain Crust @70cm from topPit aspect and coordinatesSlope where snowpit was dug (past dead tree in pic) , Public
02/16/2017 - 12:00
Snowpack Observation 		Ophir Peak
Mount Rose Area 		Large snow transport amounts over Slide Mountain. Small test slopes did not show any signs of cracking or propagation. Forecaster
02/16/2017 - 11:30
Avalanche Observation 		Andesite Peak
Donner Summit Area
Split-board kicks triggered a refrigerator sized cornice failure onto the wind loaded test slope. This resulted in a 12-14 inch deep wind slab failure.
The other side of the wind slab that resulted from the cornice drop.
Wind slab cracking in an undercut wind-loaded slope
 Forecaster
02/15/2017 - 12:00
Snowpack Observation 		Incline Lake Peak
Mount Rose Area 		Forecaster
02/15/2017 - 11:00
Snowpack Observation 		Rubicon Peak
West Shore Area 		Cloud cover over the northern portion of the forecast area at 10:30am.Heavier cloud cover approaching at 10:30am.Increasing colud cover over the southern portion of the forecast area, but less than to the north. Forecaster
02/14/2017 - 12:50
Snowpack Observation 		Near Skin Track Below Echo Summit, Elev 8411"
Echo Summit Area 		Cornice and old crown line lookers right of Echo PeakOld crown line lookers right of Echo Peak, above bowlDay old wet sluffing lookers left of Echo PeakAspect and Coordinates Public
02/14/2017 - 12:45
Snowpack Observation 		Deep Creek - East Ridge
Cabin Creek, Deep Creek, or Pole Creek Area 		Public
02/14/2017 - 11:00
Snowpack Observation 		Rose Knob Peak
Mount Rose Area 		Wind-sculpted surfaces on exposed slopes at 9400 ft.Human-triggered roller balls on an E aspect at ~8000 ft. at 10 am. Forecaster
02/13/2017 - 14:23
Avalanche Observation 		Mt Rose
Mount Rose Area
Public
02/13/2017 - 13:00
Snowpack Observation 		Andesite Peak
Donner Summit Area 		5mm surface hoar wet at 3pm. Professional Observer
02/13/2017 - 09:45
Snowpack Observation 		Poison Point
Bear Valley Area 		Wind scoured snow surface along ridge between Bard's Bowl and Poison Point. Forecaster
02/12/2017 - 15:00
Avalanche Observation 		Desolation Wilderness Area
Desolation Wilderness Area (including Emerald Bay)
Guide
Tahoe Mountain Scho
02/12/2017 - 14:00
Snowpack Observation 		Andesite Peak
Donner Summit Area 		Guide
Tahoe Mountain Scho
02/12/2017 - 13:30
Snowpack Observation 		Apple Bonkers and Horse Canyon
Bear Valley Area 		Wind scouring near ridgetop in NE aspect. Forecaster

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