Sierra Front (Rock Crk - June Lakes)

AVALANCHE OBSERVATION
Sierra Front (Rock Crk - June Lakes)
Submission Info
Forecaster
Sunday, January 8, 2017 - 3:00pm
Red Flags: 
Recent avalanche activity
Recent loading by new snow, wind, or rain
Obvious avalanche path
Avalanche Type: 
Wet
Slab
Loose/Point-Release
Slope: 
35degrees
Trigger type: 
Natural
Aspect: 
Northeast
Weak Layer: 
Storm Snow
Terrain: 
Below Treeline
Elevation: 
9 000ft.
Bed Surface: 
Unknown
More detailed information about the avalanche: 

 

Quick road tour this afternoon while there was a break in the weather. Noted wide spread natural activity from Convict Lake to June Lakes.

Rock Creek to McGee - still not cleared.

Convict Lake - Avalanche activity visible from the lake on both sides of the valley (Mt. Laurel, Mt. Morrison), unknown start, ran short of the lake.

Solitude - debris visible in Banana Chute, start unknown.

Punta Bardini - start unknown, debris to the young growth in the runout. D2-

Mammoth Bowl - debris visible in the upper bowl, crown partially obscured, visible 1-2' x 200'. D2

​Dempsey's Don't - debris visible in the top end, unknown runout. D2

Mammoth Rock - Loose/Wet x 2 ~ 8,700 an below. Possible running to ground. Numerous small Loose/Wet running short distances. D1 

Carson Pk. and visible terrain north - extensive debris visible in Devils' Slide. Debris from central face in runout D2. Two debris fields D2 running just south of Silver Lake.

Sierra Front - numerous Loose/Wet starting at ~ 8,700' +/- from Mammoth Rock south to McGee Creek. D1 - D1+. Most active areas were the was little snow prior and recently loaded by the latest series of storms. 

As you move east of the crest rain up to 8,000', wet snow up to to 9,000', heavy dense snow fall above, 10,000'. One to three feet along 395 from Mammoth to June Lake.  

 

 

 

 

 

 

 

 

  

 

 

 

 

 

Blowing Snow: 
Yes
Cloud Cover: 
100% of the sky covered by clouds
Air temperature: 
Above Freezing
Wind Speed: 
Moderate
Precipitation: 
Mixed rain and snow
Air temperature trend: 
Static
Wind Direction: 
Southwest
Accumulation rate: 
Less than 1 in. per hour
More detailed information about the weather: 

Strong AR moving through the region following a number of coldish storms. Recent system has transitioned from snow pre-frontal passage to moderate to heavy rain and thiunderstorms/thundersnows with frontal passage. Cooler air forecasted tonight (Sunday) into Monday with 6 to 12" new forecasted. 

Sierra Front (Rock Crk - June Lakes)

ESAC receives support from ...