Sonora Pass- Post Storm

Location Name: 
Sonora Pass- Sardine Meadow terrain
Region: 
BWRA
Date and time of observation: 
Tue, 04/12/2022 - 16:00
Location Map: 


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

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

It was nice to see some new snow and not feel the underlying crust under our skis (for the most part). Today we went back to the Sonora Pass area to investigate storm totals and see how sensitive the newly formed wind slabs were. 

At Sardine Meadows at 8700 ft, we measured 20 cm of new storm snow and at ridge-top, at 9800 ft we measured 35 cm of new snow. 

Throughout our tour, we noticed how the new snow felt stiff and wind-affected most areas that we traveled except for west aspects that were stripped down to the crust.  That being said, we only noticed some isolated cracking under-ski within this new snow.  We also conducted multiple hand pits and found the new snow bonding well to the crust in this location.  On a wind-loaded test slope with a small cornice, I was able to easily make it crack and release it with a light kick, which showed us that wind-loaded areas with cornices are reactive to a human trigger. 

At our transition point at 9800 ft, I was able to look out at the neighboring peaks and I did observe a D1-sized wet loose avalanche above Leavitt Lake on an East aspect under a cliff in steep terrain.  On our way out at about noon we noticed sun-exposed lower elevations started getting moist and gloppy under our skis, which was a clear sign of the warming snow. 

Snowpack photos: