Sonora Pass

Location Name: 
Sardine Meadows
Date and time of observation: 
Wed, 12/15/2021 - 13:00
Location Map: 

Red Flags: 
Recent avalanche activity
Recent loading by new snow, wind, or rain

Observation made by: Avalanche Specialist
Snowpit Observations
More detailed information about the snowpack: 

Today we traveled up to the Sardine Meadows area on Highway 108.  On our way in we saw signs of natural avalanche activity from across the valley (see photo).  Increasing winds and cloud cover signaled the arrival of tonight's storm. The Sierra Crest held onto a thick cloud layer for most of the day with mostly sunny skies throughout the 395 corridor around Bridgeport.   Temperatures remained below freezing at 9600 and only crept above freezing for a few hours at 7200.  We dug a few hand pits at 9600 which revealed a right side up snowpack with a noticeable density change 30-60cms down into the pack.  Signs of wind transport became a theme today with large to very large wind pillows in specific areas.   At times it became difficult to move around in the new snow.  I stepped off my track for a boot penetration test and sunk into the snow up to my waist.  Probing around the Leavitt Lakes 108 junction revealed 3 + feet of new snow.  With all the signs of instability, around us, we stayed out of avalanche terrain. 

Snowpit or crown profile photo or graph: 
Weather Observations
Blowing Snow: 
Cloud Cover: 
50% of the sky covered by clouds
Air temperature: 
Below Freezing
Wind Speed: 
Air temperature trend: 
Wind Direction: 
More detailed information about the weather: 

A winter weather advisory remains in effect from 7 pm tonight to 1 pm Thursday.  Snow is expected tonight with one to two feet in the High Sierra west of Highway 395.