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
04/19/2019 - 10:30
Snowpack Observation 		Yuba Pass
Yuba Pass Area 		1.5 inches of very week surface crust remaining at 10 am. Deep boot penetration in sunny flats at 10 am. Wet snow surface sluffing, moving in the direction of loose wet instability. Deep, unsupportable wet snow with no signs of any remaining refreeze at 10:50 am. Forecaster
12/01/2022 - 12:00
Avalanche Observation 		Lincoln Ridge
Yuba Pass Area 		Remotely triggered avalanche failing on near surface facets from 300' away. Part of shooting cracks that traveled 500' through northerly terrain of varying steepness, down to near surface facet layer. More shooting cracks above steep slope. More shooting cracks down to near surface facets. Forecaster
03/27/2017 - 10:30
Snowpack Observation 		Lincoln Ridge
Yuba Pass Area 		Sunny skies in the Yuba Pass area with signs of rapid warming becoming evident at 9:45 am.Kicking small cornince sections on NE aspect at treeline at 7,800' produced no results on wind loaded slope below.Signs of rapid warming/wet snow instability on SE aspect test slope at 7,800' at 10:50 am. Forecaster
11/22/2020 - 11:00
Snowpack Observation 		Lincoln Ridge
Yuba Pass Area 		Supportable snow with a thin layer of soft snow on the surface Wind sculpted snow along the ridgeline Soft snow on top of a supportable more dense layer of snow. Compression test on a NE facing slope at 7800 ft. this test did not produce unstable results (CTN). Forecaster
04/12/2020 - 11:00
Snowpack Observation 		Yuba Pass
Yuba Pass Area 		Breakable surface crust from weak refreeze. Surface crust nearly all melted in sunny areas at 9:45 am. Easily triggered roller balls and pinwheels on a NE aspect at about 7,000'. Large pinwheel intentionally triggered from the slope above. March 24 buried surface hoar layer still a concern. March 24 surface hoar crystals under 10x magnification. Forecaster
11/08/2017 - 11:15
Snowpack Observation 		Lincoln Ridge
Yuba Pass Area 		Snowpit location with 50cm snow depth, some previous wind loading.Snowcover of about 14 inches at about 7,350'FS Rd 12 at 6,900'. Rd plowed for logging operations. Forecaster
12/29/2009 - 10:50
Snowpack Observation 		Lincoln Ridge
Yuba Pass Area 		Forecaster
02/09/2023 - 11:30
Snowpack Observation 		Yuba Pass
Yuba Pass Area 		Jan 29 buried surface hoar layer. Unreactive at this location. Jan 29 buried SH layer. 1 to 2.5cm in size. Location of ECT's Forecaster
12/30/2011 - 10:30
Snowpack Observation 		Lincoln Ridge
Yuba Pass Area 		Forecaster
12/23/2018 - 11:00
Snowpack Observation 		Peak 8040'
Yuba Pass Area 		Several slope cuts did not produce any signs of instabilities. At 8000', 1'' rain crust existed near the surface with soft snow below. Forecaster
01/04/2020 - 12:00
Snowpack Observation 		Lincoln Ridge
Yuba Pass Area 		Fragile cornice with unreactive 4 inch thick wind slab below. Forecaster
03/08/2019 - 11:15
Snowpack Observation 		Lincoln Ridge
Yuba Pass Area 		One of many large cornices in this area. Sustained moderate to intense blowing snow on the ridgetop. Forecaster
03/19/2022 - 13:00
Snowpack Observation 		Lincoln Ridge
Yuba Pass Area 		Small cornices cracked easily above wind-loaded slopes. Near the ridgeline this developing wind slab measured about 6 inches deep. A few feet down the slope the wind slab had diminished to about 3 inches in depth. Intense blowing snow on along Lincoln Ridge. The depth of wind-loaded snow tapered off quickly as one moved away from the ridge. Snow showers mixed with periods of lighter precipitation and sun peeking through the clouds occurred during our tour. About 1 inch of new snow at the trailhead at 11:30 am. 2-3 inches of new snow accumulation at about 7400 ft around 1:00 pm. Forecaster
01/09/2022 - 11:15
Snowpack Observation 		Lincoln Ridge
Yuba Pass Area 		Cornice formation from past SW winds and ridgetop sastrugi from E winds last night. Skin track refill from E winds last night. Ridgetop ski track from yesterday scoured to inverted by E winds last night. Dust on crust conditions in most open areas away from the wind affected ridgetops. Surface hoar of 5 to 15mm noted in the area. Wet surface snow on SSW aspect terrain at 7,100'. Forecaster
03/31/2020 - 11:00
Avalanche Observation 		Lincoln Ridge
Yuba Pass Area 		Reactive dense wind slab with wide propagation on small test slope. ECTP-13 on buried surface hoar. Buried surface hoar, some up to 10mm + Forecaster

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