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 Snowpack, Avalanche, Weather Images Observation made by
03/15/2023 - 11:00
Avalanche Observation 		Elephants Back
Carson Pass Area 		A small wind slab avalanche, where an adjacent ECTP indicated continued instability My first ECT that indicated instability My second ECT that indicated instability An inch thick graupel layer just below the surface Cold snow above the supportable crust, with some graupel and surface hoar Debris from Frog Lake Ridge that crossed the Red Lake Rd. The path width at the road was 150ft, and debris ran well downhill of the road Professional Observer
03/15/2023 - 10:00
Avalanche Observation 		Ward Canyon
Blackwood Canyon or Ward Canyon Area 		Cornice failure + wet slab Numerous wet snow avalanches Wind Slab - top of Little AK Guide
Blackbird Mountain Guides
03/15/2023 - 09:43
Avalanche Observation 		Trestle Peak taken from Wolfe Estates
Donner Summit Area 		Trestle Peak 9:30am March 15 Public
03/15/2023 - 08:00
Avalanche Observation 		Corkscrew Public
03/14/2023 - 18:04
Avalanche Observation 		Mount Tallac
Desolation Wilderness Area (including Emerald Bay) 		Crown around 8200-8500' on E-SE aspect where wet slide likely started after trigger from windslab avalanche in upper bowl. Looking up slide path Looking down lower 1000' of slide path Lots of damaged trees Public
03/14/2023 - 18:00
Avalanche Observation 		Truckee River Canyon Near Floriston
Outside of the Forecast Area 		Forecaster
03/14/2023 - 14:20
Avalanche Observation 		Carson Pass Area
Carson Pass Area 		Public
03/14/2023 - 12:04
Avalanche Observation 		Donner Peak
Donner Summit Area 		Public
03/14/2023 - 12:00
Snowpack Observation 		Sierra Buttes
Yuba Pass Area 		Public
03/14/2023 - 11:30
Avalanche Observation 		Hidden Peak
West Shore Area 		Small wind slab avalanche crown skier triggered on SE aspect NTL Roller balls and small wet loose avalanche skier triggered on small rollover. Rain on snow with no snow in the trees at 7000'. Stormy and wet on the summit ridge of Hidden Peak. Settlement cones around trees. Forecaster
03/13/2023 - 14:30
Avalanche Observation 		Tamarack
Mount Rose Area 		Guide
Blackbird Mountain Guides
03/13/2023 - 12:15
Avalanche Observation 		Andesite Peak
Donner Summit Area 		Storm slab, intentionally skier triggered, BTL terrain around 7,800' Storm slab, intentionally skier triggered, BTL terrain around 7,800' Storm slab cracking while breaking trail in wind protected BTL terrain. Moving above the skin track so that the storm slab was undercut made it easy to identify the layering. Shooting crack Forecaster
03/13/2023 - 12:00
Avalanche Observation 		Jake's Peak
West Shore Area 		Public
03/13/2023 - 11:00
Snowpack Observation 		Blue Lakes
Carson Pass Area 		Repeatable ECTP results near the wind loaded ridgeline of The Nipple Three settlement cracks on the same tree A thick layer of wet snow 3ft below the surface, where grains were still loose and not bonding to each other 3ft of new snow above a thick rain layer. My probe is 10ft long, at the bottom of a 3ft hole, and still not touching the ground Professional Observer
03/13/2023 - 10:00
Avalanche Observation 		Coudburst Canyon
Woodfords Canyon 		Professional Observer
03/12/2023 - 13:00
Avalanche Observation 		Incline Peak
Mount Rose Area 		We intentionally triggered two wind slab avalanches on small NE aspect slopes in near treeline terrain. Both were 6 inch slabs of 4F+ over F hard snow. Cornices were weak, with sections up to 20 feet wide easily collapsed intentionally. Low cloud ceiling. Ongoing rapid settlement of storm snow. Forecaster
03/12/2023 - 13:00
Snowpack Observation 		Rubicon Peak
West Shore Area 		Snowpit test targeting the storm snow did not produce signs of instability (ECTN). Runnels in thh snow surface indicating water draining through the snowpack at 6500 ft. Roller balls and pinwheels comprised of wet snow on a steep slope at 6850 feet. Ice on trees and a rain crust at the base of the storm snow existed all the way to the top of Rubicon. Small cracks in a wind-loaded area near the summit of Rubicon. Clouds and blowing snow at the summit of Rubicon made for poor visibility. Forecaster
03/12/2023 - 12:00
Snowpack Observation 		Blue Lakes
Carson Pass Area 		Public
03/12/2023 - 10:47
Snowpack Observation 		Johnson Canyon
Donner Summit Area 		Public
03/11/2023 - 14:00
Avalanche Observation 		Andesite Ridge
Donner Summit Area 		Educator
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