Powderhouse SE Ridge

Location Name: Powderhouse Region: Luther Pass Area (including Job and Freel) Observation Date & Time: Thursday, March 11, 2021 - 12:00
Location: 38.784890, -119.968740 See map: CalTopo	Is this an Avalanche Observation?: No Conditions Alerts: Recent Loading Terrain Alerts: Terrain Matches the Advisory

Observation made by: Public

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Observation

Description of Snow, Weather, and Avalanche Conditions:

Toured Powderhouse today to observe new snow consolidation below treeline. The few open SE facing aspects we encountered were getting slightly more solar radiation then the other aspects and getting denser by mid-afternoon. The new storm snow is still not showing signs of instability, and beyond the handful of small loose dry sluffs coming out of high angle terrain (>40 degrees) didn't observe any further avalanche activity. We were unable to observe any signs of wind loading given the terrain.

Snow pit profile

small dry loose slides observed in the highlighted area

Snowpit or crown profile photo or graph:

Snowpack Details

Total Snow Depth:

193cm

Persistent Weak Layers:

Not observed

Terrain Details

Terrain: elevations:

Below Treeline

Terrain: aspects:

Avalanche Details

Avalanche Type:

Loose Dry/ Sluff

Failure Plane/Weak Layer:

Storm Snow

Additional number of similar avalanches:

5-10

Trigger

Trigger:

Natural

Terrain

Aspect:

Northeast

Starting Elevation:

below-treeline

Size

Destructive Size:

D1 Relatively harmless to people.

Relative Size:

R1 Very Small

Weather Details

Elevation of Observation:

8000 - 9000 ft.

Blowing Snow:

None

Wind Direction:

Southwest

Wind Speed:

Light

Sky Cover:

Broken - Mostly Cloudy - more than 4/8 and less than 8/8

Highest Precipitation Rate:

Very Light Snowfall (S-1 = up to .5cm /~.25 in per hour)

Precipitation:

Snow

Air temperature:

Below Freezing

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Powderhouse SE Ridge

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