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
12/14/2015 - 04:00
Avalanche Observation 		Mt. Rose Summit Parking Lot
Mount Rose Area
Forecaster
12/19/2016 - 12:00
Snowpack Observation 		Relay Peak
Mount Rose Area 		Wind scoured snow on an E aspect at 9800 ft. Forecaster
01/25/2018 - 11:30
Snowpack Observation 		East Ridge Tamarack Peak
Mount Rose Area 		Stubburn wind slabs with cracking and shooting cracks in wind loaded terrain. Many large cornice drops on slopes caused shooting cracks but no slab release. East Ridge of Tamarack.Wind textured surface snow on Far East Ridge.ECTP-29 failing into the old snow. A layer of F hard snow existed below old surface crust. 9300', N aspect.Avalanche debris from early in the storm almost entirely covered up. Cornice failure and/or wind slab avalanche release. 9300', N aspect. Forecaster
11/16/2012 - 10:35
Snowpack Observation 		Tamarack Peak
Mount Rose Area 		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
12/13/2021 - 11:10
Avalanche Observation 		Far East Ridge of Tamarack Peak
Mount Rose Area 		Intentional trigger point for 900' wide R5 avalanche on Dec 11 layer. Avalanche failed across all of this terrain and more out of sight in the background. Terminus of cracks, just under 900' from trigger point, going down to Dec 11 layer. Cracks and debris More cracks and debris Still more cracks and debris Cracking and whumpfing while breaking trail. Digging out a crack down to the Dec 11 facet layer while breaking trail. Forecaster
04/03/2011 - 15:30
Snowpack Observation 		Incline Lake Peak
Mount Rose Area 		Forecaster
03/07/2023 - 12:00
Avalanche Observation 		Tamarack Peak
Mount Rose Area 		A couple small natural wind slab avalanches along the East Ridge of Tamarack peak. Small test slope failure with wind slab propagation 75' wide. Very large cornices exist off of ridges. These could become an issue in the near future with warmer loading events. Intense blowing snow in the morning and midday. Investigating some weak NCF's around a melt freeze crust on S aspects, ECTN results. Forecaster
01/28/2014 - 11:45
Snowpack Observation 		Andesite Ridge
Donner Summit Area 		Forecaster
03/12/2018 - 12:30
Snowpack Observation 		Jakes Peak
West Shore Area 		Ski cut triggering small loose wet avalanche with pin wheels up to 3 ft in diameter. Upper limit of fog/stratus layer at 6,800' at 9:50 am. Peaks in full sun. Fog/stratus layer over Lake Tahoe at 10:15 am. Forecaster
01/30/2021 - 10:00
Avalanche Observation 		Castle/Basin
Donner Summit Area 		Wide propagating avalanche, mostly filled in. Close up of filled in crown below Castle Summit. Another wide propagating crown between Castle and Basin. Mid slope crowns, appearing connected. Settlement cracks around trees. Wind affect on SW face of Castle, giving it the surreal appearance of a crevassed glacier. Forecaster
02/07/2022 - 12:00
Snowpack Observation 		Tamarack Peak
Mount Rose Area 		East aspects are still a mix of winter firm snow and wet spring type snow. Mini penitentes forming on all southerly aspects Forecaster
12/14/2010 - 13:10
Snowpack Observation 		Castle Peak
Donner Summit Area 		Forecaster
12/27/2022 - 12:00
Snowpack Observation 		Powderhouse
Luther Pass Area (including Job and Freel) 		1' of new storm snow above 8500' with wet rain soaked snow below. Poor visibility with blowing snow on summit ridge above 9200' Mud flow in steep gully feature on Hwy 89 between Palisades Tahoe and Truckee Poor visibility with blowing snow on summit ridge above 9200' Forecaster
01/03/2010 - 11:20
Snowpack Observation 		Rose Knob Peak
Mount Rose Area 		Forecaster

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