Sierra Crest

Location Name: 
Crest above Pole Creek
Region: 
Donner Summit Area
Date and time of observation: 
Thu, 02/01/2018 - 13:30
Location Map: 
United States
39° 13' 57.4284" N, 120° 16' 9.588" W
See map: Google Maps
US


Red Flags: 
Rapid warming
Obvious avalanche path
Observation made by: Guide at Tahoe Mountain School
Snowpit Observations
More detailed information about the snowpack: 

We found isolated, unreative windslabs on North aspects, melting snow and limited coverage on S-W aspects today on the crest above Deep Creek and Pole Creek. Very warm temperatures also contributed to many skier triggered loose wet avalanches in steep SE terrain.  In less steep locations some skier triggered pinwheel and roller ball activity was observed. Despite monderate winds on ridges there was no blowing snow. Below 7500' Ft. on all aspects heavy and moist surface snow existed. 

Many old wind slab and cornice fall avalanches were observed at various locations along the crest in steep east facing wind loaded terrain.

 

Snowpack photos: 
Weather Observations
Blowing Snow: 
No
Cloud Cover: 
25% of the sky covered by clouds
Air temperature: 
Above Freezing
Wind Speed: 
Moderate
Precipitation: 
None
Air temperature trend: 
Warming
Wind Direction: 
East
Accumulation rate: 
More detailed information about the weather: