Rock Creek warming and avalanche activity

 
 
 
 
 
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SNOWPACK OBSERVATION
Rock Creek above pack station
Submission Info
Tuesday, April 24, 2018 - 12:00pm
Red Flags: 
Rapid warming
Obvious avalanche path
37° 26' 43.35" N, 118° 45' 27.1836" W
Snowpit Observations
More detailed information about the snowpack: 

Went into Rock Creek to assess coverage and timing of snow melt. Parked at the pack station at 9am, 49 degrees F. Clear skies and calm winds. Melting noted at 10,000 ft at this time with firm patches in the shade. Patchy coverage with many streams open. 

Skinned west from the pack station and then up north facing slopes of Mt Starr. Ski penetration 1-2 cm. 

At 11am, north facing slopes at 11,000 ft were beginning to melt. Snow still transitioning to spring like conditions at this elevation and aspect. ~20cm of snow from last storm over firm crust. Boot penetration 15 cm. 

A ski cut at 11,600 ft on a north aspect started a loose snow avalanche that ran approximately 1000 feet in a 35 degree gully. See attached photo. Turns on other N and NE aspects started smaller slides and rollerballs. 

 

Snowpack photos: 
Wet slide taken from start of slide

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