Snowmobile observation from Lola

Location Name: East of meat house meadows Region: Little Truckee Summit Areas Observation Date & Time: Saturday, February 13, 2021 - 12:00
Location: 39.448959, -120.339494 See map: CalTopo	Is this an Avalanche Observation?: Yes Conditions Alerts: Avalanche Activity Other Signs of Instability (cracking, whumpfing, collapsing) Other Signs of Instability (cracking, whumpfing, collapsing)›Shooting Cracks Recent Loading Recent Loading›More Than a Foot of New Snow Terrain Alerts: Slopes Steeper than 30 degrees Trigger Points Terrain Traps Terrain Matches the Advisory

Observation made by: Public

Tabs

Observation

Description of Snow, Weather, and Avalanche Conditions:

Test slope/play we were able to trigger a small slide from recent wind loading of new storm snow. Also caused shooting cracks.

Slope was steeper than 30 degrees, in a place we expected to see activity, matched advisory and an unsupported slope into a creek.

2 plus feet of new storm snow with lots of wind carried fill. Sun cracked throughout day.

Terrain Details

Terrain: elevations:

Near Treeline

Avalanche Details

Avalanche Type:

Wind Slab

Failure Plane/Weak Layer:

Storm Snow

Trigger

Trigger:

Snowmobiler

Trigger Modifier:

Intentionally Triggered

Terrain

Start Zone Slope Angle:

35degrees

Aspect:

East

Size

Destructive Size:

D1 Relatively harmless to people.

Relative Size:

R1 Very Small

Crown Height:

Less than 1 ft

Avalanche Width (Average width):

6ft.

Avalanche Length (Vertical Run):

6ft.

Weather Details

Elevation of Observation:

8000 - 9000 ft.

Blowing Snow:

Light

Wind Direction:

Northeast

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

Sponsors:

This website is owned and maintained by the non-profit arm of the Sierra Avalanche Center. Some of the content is updated by the USDA avalanche forecasters including the forecasts and some observational data. The USDA is not responsible for any advertising, fund-raising events/information, or sponsorship information, or other content not related to the forecasts and the data pertaining to the forecasts.

Forecast Links

Subscriptions

Forecast Tutorials

Observations

Incidents

Submit Observations

Subscriptions

Remote Weather Stations

National Weather Service

Model Forecasts

Local Resources

The SAC Daily Flow

Forecast Tutorials

Other Resources

Snowmobile observation from Lola

Conditions Alerts:

Tabs

Sponsors:

Forecast Links

Subscriptions

Forecast Tutorials

Observations

Incidents

Submit Observations

Subscriptions

Remote Weather Stations

National Weather Service

Model Forecasts

Local Resources

The SAC Daily Flow

Forecast Tutorials

Other Resources

Snowmobile observation from Lola

Conditions Alerts:

Tabs

Search form

Follow Us

Sponsors: