Twin Lakes 3/5 Evening Conditions

Location Name: 
Horse Creek
Region: 
BWRA
Date and time of observation: 
Tue, 03/05/2019 - 17:00
Location Map: 


Red Flags: 
Recent avalanche activity
Whumphing noises, shooting cracks, or collapsing
Recent loading by new snow, wind, or rain

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

Headed up to Twin Lakes for a quick evening ski to sample the new snow.  I watched it snow moderately hard in Bridgeport for the majority of the day, eventually tappering and transitioning to rain around 2pm.  

Departing Mono Village around 4pm 2in of goopy snow had accumulated at lake level.  2in along the lake shore transitioned to 4in of mank at 8K, which increased to 10-12in of dry, medium density snow at 9K.  This storm slab was sitting on a stout temperature crust and appeared to be well-bonded via hand pits.  A density inversion around 8in deep was apparent, with a slightly more dense, cohesive slab sitting on top of 2-4 inches lighter snow that would've accumulated during colder temps this morning.  Tugging on isolated blocks of this slab via hand pits produced Q2 shears with moderate force.  

Localized collapsing adjacent to skis was consistent up to 9K throughout the ascent.  We didn't sample many slopes prone to reactivity (convex, high slope angle) but observed no shooting cracks or glaring signs of instability.   The snowpack below 8K was thoroughly wet - supportable on skis but easy to push pole probes 1-2ft deep.  To me a saturated snowpack means wet slabs are at least a remote possibility and should be a consideration in route planning and terrain management.  

1: Localized cracking

2: Making lemonade

3: Roller balls below 8K

Snowpit or crown profile photo or graph: 
Weather Observations
Blowing Snow: 
Yes
Cloud Cover: 
100% of the sky covered by clouds
Air temperature: 
Below Freezing
Wind Speed: 
Light
Precipitation: 
Mixed rain and snow
Air temperature trend: 
Cooling
Wind Direction: 
Accumulation rate: 
Less than 1 in. per hour
More detailed information about the weather: 

Rain/snow mix at the lake shore transitioned to S-1 snowfall as we climbed.   Calm winds around the lake transitioned to light winds with moderate gusts below treeline in exposed terrain.  

There's functional daylight until about 6pm these days.